/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.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:21:49,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:21:49,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:21:49,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:21:49,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:21:49,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:21:49,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:21:49,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:21:49,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:21:49,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:21:49,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:21:49,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:21:49,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:21:49,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:21:49,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:21:49,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:21:49,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:21:49,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:21:49,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:21:49,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:21:49,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:21:49,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:21:49,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:21:49,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:21:49,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:21:49,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:21:49,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:21:49,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:21:49,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:21:49,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:21:49,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:21:49,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:21:49,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:21:49,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:21:49,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:21:49,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:21:49,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:21:49,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:21:49,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:21:49,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:21:49,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:21:49,464 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 18:21:49,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:21:49,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:21:49,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:21:49,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:21:49,495 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:21:49,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:21:49,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:21:49,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:21:49,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:21:49,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:21:49,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:21:49,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:21:49,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:21:49,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:21:49,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:21:49,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:21:49,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:21:49,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:21:49,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:21:49,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:21:49,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:21:49,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:21:49,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:21:49,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:21:49,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:21:49,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:21:49,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:21:49,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:21:49,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:21:49,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:21:49,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:21:49,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:21:49,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:21:49,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:21:49,959 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:21:49,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-28 18:21:50,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9e013e4a/3d9f1de8148a4797a1151b0b8c59205b/FLAG518fa5477 [2020-10-28 18:21:50,841 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:21:50,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-28 18:21:50,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9e013e4a/3d9f1de8148a4797a1151b0b8c59205b/FLAG518fa5477 [2020-10-28 18:21:50,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9e013e4a/3d9f1de8148a4797a1151b0b8c59205b [2020-10-28 18:21:50,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:21:51,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:21:51,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:21:51,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:21:51,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:21:51,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:21:50" (1/1) ... [2020-10-28 18:21:51,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673a8e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:51, skipping insertion in model container [2020-10-28 18:21:51,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:21:50" (1/1) ... [2020-10-28 18:21:51,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:21:51,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:21:51,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:21:51,757 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:21:51,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:21:52,034 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:21:52,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:52 WrapperNode [2020-10-28 18:21:52,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:21:52,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:21:52,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:21:52,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:21:52,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:52" (1/1) ... [2020-10-28 18:21:52,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:52" (1/1) ... [2020-10-28 18:21:52,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:52" (1/1) ... [2020-10-28 18:21:52,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:52" (1/1) ... [2020-10-28 18:21:52,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:52" (1/1) ... [2020-10-28 18:21:52,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:52" (1/1) ... [2020-10-28 18:21:52,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:52" (1/1) ... [2020-10-28 18:21:52,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:21:52,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:21:52,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:21:52,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:21:52,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:52" (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 18:21:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:21:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:21:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:21:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:21:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:21:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:21:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:21:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:21:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:21:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:21:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:21:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:21:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:21:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:21:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:21:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:21:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:21:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:21:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:21:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:21:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:21:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:21:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:21:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:21:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:21:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:21:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:21:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:21:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:21:54,665 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:21:54,665 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:21:54,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:21:54 BoogieIcfgContainer [2020-10-28 18:21:54,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:21:54,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:21:54,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:21:54,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:21:54,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:21:50" (1/3) ... [2020-10-28 18:21:54,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1829f8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:21:54, skipping insertion in model container [2020-10-28 18:21:54,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:52" (2/3) ... [2020-10-28 18:21:54,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1829f8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:21:54, skipping insertion in model container [2020-10-28 18:21:54,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:21:54" (3/3) ... [2020-10-28 18:21:54,699 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-28 18:21:54,711 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:21:54,720 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:21:54,734 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:21:54,788 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:21:54,788 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:21:54,788 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:21:54,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:21:54,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:21:54,788 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:21:54,789 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:21:54,789 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:21:54,830 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states. [2020-10-28 18:21:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-28 18:21:54,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:21:54,860 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] [2020-10-28 18:21:54,860 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:21:54,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:21:54,867 INFO L82 PathProgramCache]: Analyzing trace with hash -2015037424, now seen corresponding path program 1 times [2020-10-28 18:21:54,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:21:54,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733103052] [2020-10-28 18:21:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:21:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:55,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:56,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:57,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:57,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:57,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:58,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:00,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:00,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-28 18:22:00,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:22:00,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 18:22:00,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:00,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:00,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:22:00,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-28 18:22:00,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 18:22:00,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 18:22:01,686 WARN L193 SmtUtils]: Spent 938.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-28 18:22:01,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:22:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:01,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:01,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:01,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:22:01,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:22:01,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 18:22:01,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:01,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:22:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:22:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:22:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:01,852 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 18:22:01,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733103052] [2020-10-28 18:22:01,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:22:01,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:22:01,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341234441] [2020-10-28 18:22:01,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:22:01,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:22:01,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:22:01,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:22:01,887 INFO L87 Difference]: Start difference. First operand 725 states. Second operand 4 states. [2020-10-28 18:22:03,132 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-28 18:22:09,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:22:09,146 INFO L93 Difference]: Finished difference Result 1104 states and 1962 transitions. [2020-10-28 18:22:09,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:22:09,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2020-10-28 18:22:09,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:22:09,176 INFO L225 Difference]: With dead ends: 1104 [2020-10-28 18:22:09,177 INFO L226 Difference]: Without dead ends: 898 [2020-10-28 18:22:09,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-28 18:22:09,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 895. [2020-10-28 18:22:09,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2020-10-28 18:22:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1573 transitions. [2020-10-28 18:22:09,343 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1573 transitions. Word has length 189 [2020-10-28 18:22:09,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:22:09,348 INFO L481 AbstractCegarLoop]: Abstraction has 895 states and 1573 transitions. [2020-10-28 18:22:09,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:22:09,348 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1573 transitions. [2020-10-28 18:22:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-28 18:22:09,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:22:09,360 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] [2020-10-28 18:22:09,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:22:09,361 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:22:09,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:22:09,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2031883219, now seen corresponding path program 1 times [2020-10-28 18:22:09,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:22:09,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337067260] [2020-10-28 18:22:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:22:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:10,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:10,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:11,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:12,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:13,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:13,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:14,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:14,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:14,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 18:22:14,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:22:14,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-10-28 18:22:14,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:14,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:22:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:22:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 18:22:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:16,119 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-28 18:22:16,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:22:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:16,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:16,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:22:16,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:22:16,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:22:16,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:16,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:16,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:22:16,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:22:16,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:22:16,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:16,366 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 18:22:16,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337067260] [2020-10-28 18:22:16,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:22:16,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:22:16,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780048478] [2020-10-28 18:22:16,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:22:16,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:22:16,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:22:16,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:16,373 INFO L87 Difference]: Start difference. First operand 895 states and 1573 transitions. Second operand 5 states. [2020-10-28 18:22:25,793 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-28 18:22:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:22:25,969 INFO L93 Difference]: Finished difference Result 2582 states and 4537 transitions. [2020-10-28 18:22:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:22:25,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-28 18:22:25,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:22:25,988 INFO L225 Difference]: With dead ends: 2582 [2020-10-28 18:22:25,988 INFO L226 Difference]: Without dead ends: 1748 [2020-10-28 18:22:25,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:22:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2020-10-28 18:22:26,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1745. [2020-10-28 18:22:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1745 states. [2020-10-28 18:22:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 3060 transitions. [2020-10-28 18:22:26,175 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 3060 transitions. Word has length 193 [2020-10-28 18:22:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:22:26,177 INFO L481 AbstractCegarLoop]: Abstraction has 1745 states and 3060 transitions. [2020-10-28 18:22:26,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:22:26,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 3060 transitions. [2020-10-28 18:22:26,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-28 18:22:26,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:22:26,183 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] [2020-10-28 18:22:26,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:22:26,184 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:22:26,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:22:26,184 INFO L82 PathProgramCache]: Analyzing trace with hash -173221242, now seen corresponding path program 1 times [2020-10-28 18:22:26,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:22:26,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304273664] [2020-10-28 18:22:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:22:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:26,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:27,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:27,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:28,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:29,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:31,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:31,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 18:22:31,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:22:31,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 18:22:31,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:31,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:31,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:22:31,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:22:31,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 18:22:31,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:32,705 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-28 18:22:32,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:22:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:32,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:32,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:32,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:22:32,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:22:32,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:22:32,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:32,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:22:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:22:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:22:32,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:32,974 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 18:22:32,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304273664] [2020-10-28 18:22:32,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:22:32,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:22:32,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439697074] [2020-10-28 18:22:32,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:22:32,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:22:32,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:22:32,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:32,977 INFO L87 Difference]: Start difference. First operand 1745 states and 3060 transitions. Second operand 5 states. [2020-10-28 18:22:41,321 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-28 18:22:41,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:22:41,509 INFO L93 Difference]: Finished difference Result 5057 states and 8861 transitions. [2020-10-28 18:22:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:22:41,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-28 18:22:41,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:22:41,532 INFO L225 Difference]: With dead ends: 5057 [2020-10-28 18:22:41,532 INFO L226 Difference]: Without dead ends: 3421 [2020-10-28 18:22:41,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:22:41,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2020-10-28 18:22:41,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 3418. [2020-10-28 18:22:41,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3418 states. [2020-10-28 18:22:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 5976 transitions. [2020-10-28 18:22:41,808 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 5976 transitions. Word has length 193 [2020-10-28 18:22:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:22:41,808 INFO L481 AbstractCegarLoop]: Abstraction has 3418 states and 5976 transitions. [2020-10-28 18:22:41,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:22:41,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 5976 transitions. [2020-10-28 18:22:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-28 18:22:41,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:22:41,819 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] [2020-10-28 18:22:41,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:22:41,820 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:22:41,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:22:41,821 INFO L82 PathProgramCache]: Analyzing trace with hash 949614315, now seen corresponding path program 1 times [2020-10-28 18:22:41,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:22:41,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197106884] [2020-10-28 18:22:41,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:22:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:42,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:43,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:43,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:43,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:44,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:45,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:46,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:46,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-28 18:22:46,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:22:46,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:22:46,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:46,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:46,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:22:46,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:22:46,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 18:22:46,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:22:48,251 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-28 18:22:48,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:22:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:48,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:48,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:22:48,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:22:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:22:48,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:48,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:22:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:22:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:22:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:48,459 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 18:22:48,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197106884] [2020-10-28 18:22:48,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:22:48,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:22:48,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798757036] [2020-10-28 18:22:48,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:22:48,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:22:48,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:22:48,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:48,462 INFO L87 Difference]: Start difference. First operand 3418 states and 5976 transitions. Second operand 5 states. [2020-10-28 18:22:56,319 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-28 18:22:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:22:56,520 INFO L93 Difference]: Finished difference Result 10030 states and 17528 transitions. [2020-10-28 18:22:56,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:22:56,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-28 18:22:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:22:56,561 INFO L225 Difference]: With dead ends: 10030 [2020-10-28 18:22:56,561 INFO L226 Difference]: Without dead ends: 6705 [2020-10-28 18:22:56,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:22:56,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6705 states. [2020-10-28 18:22:57,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6705 to 6702. [2020-10-28 18:22:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6702 states. [2020-10-28 18:22:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6702 states to 6702 states and 11662 transitions. [2020-10-28 18:22:57,180 INFO L78 Accepts]: Start accepts. Automaton has 6702 states and 11662 transitions. Word has length 194 [2020-10-28 18:22:57,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:22:57,180 INFO L481 AbstractCegarLoop]: Abstraction has 6702 states and 11662 transitions. [2020-10-28 18:22:57,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:22:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand 6702 states and 11662 transitions. [2020-10-28 18:22:57,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-28 18:22:57,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:22:57,199 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] [2020-10-28 18:22:57,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:22:57,199 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:22:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:22:57,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1110696871, now seen corresponding path program 1 times [2020-10-28 18:22:57,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:22:57,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389732177] [2020-10-28 18:22:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:22:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:57,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:57,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:58,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:58,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:59,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:00,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:02,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:02,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-28 18:23:02,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:23:02,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-28 18:23:02,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:02,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:23:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:23:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 18:23:02,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:23:03,735 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-28 18:23:03,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:23:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:03,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:03,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:23:03,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:23:03,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 18:23:03,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:03,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:23:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:23:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:23:03,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 18:23:04,012 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 18:23:04,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389732177] [2020-10-28 18:23:04,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:23:04,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:23:04,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281387252] [2020-10-28 18:23:04,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:23:04,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:23:04,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:23:04,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:23:04,015 INFO L87 Difference]: Start difference. First operand 6702 states and 11662 transitions. Second operand 5 states. [2020-10-28 18:23:13,551 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-28 18:23:13,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:23:13,848 INFO L93 Difference]: Finished difference Result 19443 states and 33785 transitions. [2020-10-28 18:23:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:23:13,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-28 18:23:13,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:23:13,914 INFO L225 Difference]: With dead ends: 19443 [2020-10-28 18:23:13,915 INFO L226 Difference]: Without dead ends: 13279 [2020-10-28 18:23:13,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:23:13,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13279 states. [2020-10-28 18:23:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13279 to 13276. [2020-10-28 18:23:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13276 states. [2020-10-28 18:23:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13276 states to 13276 states and 23023 transitions. [2020-10-28 18:23:15,024 INFO L78 Accepts]: Start accepts. Automaton has 13276 states and 23023 transitions. Word has length 195 [2020-10-28 18:23:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:23:15,025 INFO L481 AbstractCegarLoop]: Abstraction has 13276 states and 23023 transitions. [2020-10-28 18:23:15,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:23:15,025 INFO L276 IsEmpty]: Start isEmpty. Operand 13276 states and 23023 transitions. [2020-10-28 18:23:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-28 18:23:15,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:23:15,054 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] [2020-10-28 18:23:15,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:23:15,054 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:23:15,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:23:15,055 INFO L82 PathProgramCache]: Analyzing trace with hash -105191642, now seen corresponding path program 1 times [2020-10-28 18:23:15,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:23:15,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866255280] [2020-10-28 18:23:15,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:23:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:15,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:16,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:16,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:16,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:16,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:17,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:17,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:18,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:20,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:20,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-28 18:23:20,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:23:20,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:23:20,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:20,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:20,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:23:20,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:23:20,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 18:23:20,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:21,403 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-28 18:23:21,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:23:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:21,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:21,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:21,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:23:21,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:23:21,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 18:23:21,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:21,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:21,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:23:21,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:23:21,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:23:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:23:21,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866255280] [2020-10-28 18:23:21,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:23:21,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:23:21,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101068177] [2020-10-28 18:23:21,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:23:21,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:23:21,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:23:21,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:23:21,650 INFO L87 Difference]: Start difference. First operand 13276 states and 23023 transitions. Second operand 5 states. [2020-10-28 18:23:30,706 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-28 18:23:31,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:23:31,174 INFO L93 Difference]: Finished difference Result 38654 states and 67007 transitions. [2020-10-28 18:23:31,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:23:31,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-28 18:23:31,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:23:31,244 INFO L225 Difference]: With dead ends: 38654 [2020-10-28 18:23:31,245 INFO L226 Difference]: Without dead ends: 25947 [2020-10-28 18:23:31,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:23:31,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25947 states. [2020-10-28 18:23:33,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25947 to 25944. [2020-10-28 18:23:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25944 states. [2020-10-28 18:23:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25944 states to 25944 states and 44771 transitions. [2020-10-28 18:23:33,294 INFO L78 Accepts]: Start accepts. Automaton has 25944 states and 44771 transitions. Word has length 195 [2020-10-28 18:23:33,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:23:33,295 INFO L481 AbstractCegarLoop]: Abstraction has 25944 states and 44771 transitions. [2020-10-28 18:23:33,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:23:33,295 INFO L276 IsEmpty]: Start isEmpty. Operand 25944 states and 44771 transitions. [2020-10-28 18:23:33,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-28 18:23:33,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:23:33,434 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] [2020-10-28 18:23:33,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:23:33,435 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:23:33,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:23:33,436 INFO L82 PathProgramCache]: Analyzing trace with hash -944809150, now seen corresponding path program 1 times [2020-10-28 18:23:33,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:23:33,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090209765] [2020-10-28 18:23:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:23:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:33,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:33,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:34,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:34,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:37,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:38,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:38,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 18:23:38,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:23:38,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:23:38,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:38,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:38,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:23:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:23:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-28 18:23:38,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:23:39,847 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-28 18:23:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:23:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:39,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:39,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:23:39,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:23:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:23:39,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:39,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:23:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:23:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:23:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:39,972 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 18:23:39,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090209765] [2020-10-28 18:23:39,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:23:39,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:23:39,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634474205] [2020-10-28 18:23:39,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:23:39,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:23:39,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:23:39,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:23:39,975 INFO L87 Difference]: Start difference. First operand 25944 states and 44771 transitions. Second operand 5 states. [2020-10-28 18:23:50,647 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-28 18:23:51,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:23:51,757 INFO L93 Difference]: Finished difference Result 75221 states and 129723 transitions. [2020-10-28 18:23:51,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:23:51,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-28 18:23:51,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:23:51,878 INFO L225 Difference]: With dead ends: 75221 [2020-10-28 18:23:51,878 INFO L226 Difference]: Without dead ends: 50494 [2020-10-28 18:23:51,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:23:51,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50494 states. [2020-10-28 18:23:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50494 to 50491. [2020-10-28 18:23:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50491 states. [2020-10-28 18:23:56,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50491 states to 50491 states and 86757 transitions. [2020-10-28 18:23:56,467 INFO L78 Accepts]: Start accepts. Automaton has 50491 states and 86757 transitions. Word has length 196 [2020-10-28 18:23:56,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:23:56,467 INFO L481 AbstractCegarLoop]: Abstraction has 50491 states and 86757 transitions. [2020-10-28 18:23:56,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:23:56,467 INFO L276 IsEmpty]: Start isEmpty. Operand 50491 states and 86757 transitions. [2020-10-28 18:23:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-28 18:23:56,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:23:56,544 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] [2020-10-28 18:23:56,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:23:56,544 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:23:56,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:23:56,545 INFO L82 PathProgramCache]: Analyzing trace with hash -467887833, now seen corresponding path program 1 times [2020-10-28 18:23:56,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:23:56,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302698084] [2020-10-28 18:23:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:23:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:56,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:57,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:57,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:58,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:58,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:58,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:01,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:01,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-28 18:24:01,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:24:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 18:24:01,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:01,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:24:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:24:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 18:24:01,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:02,855 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-28 18:24:02,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:24:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:02,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:02,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:02,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:24:02,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:24:02,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:24:02,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:02,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:02,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:24:02,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:24:02,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:24:02,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:02,968 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 18:24:02,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302698084] [2020-10-28 18:24:02,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:24:02,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:24:02,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842471022] [2020-10-28 18:24:02,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:24:02,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:24:02,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:24:02,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:24:02,970 INFO L87 Difference]: Start difference. First operand 50491 states and 86757 transitions. Second operand 5 states. [2020-10-28 18:24:16,883 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-28 18:24:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:24:19,221 INFO L93 Difference]: Finished difference Result 146255 states and 250991 transitions. [2020-10-28 18:24:19,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:24:19,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-28 18:24:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:24:19,420 INFO L225 Difference]: With dead ends: 146255 [2020-10-28 18:24:19,420 INFO L226 Difference]: Without dead ends: 98947 [2020-10-28 18:24:19,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:24:19,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98947 states. [2020-10-28 18:24:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98947 to 98944. [2020-10-28 18:24:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98944 states. [2020-10-28 18:24:28,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98944 states to 98944 states and 168967 transitions. [2020-10-28 18:24:28,600 INFO L78 Accepts]: Start accepts. Automaton has 98944 states and 168967 transitions. Word has length 197 [2020-10-28 18:24:28,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:24:28,601 INFO L481 AbstractCegarLoop]: Abstraction has 98944 states and 168967 transitions. [2020-10-28 18:24:28,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:24:28,601 INFO L276 IsEmpty]: Start isEmpty. Operand 98944 states and 168967 transitions. [2020-10-28 18:24:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-28 18:24:28,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:24:28,711 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] [2020-10-28 18:24:28,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:24:28,712 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:24:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:24:28,712 INFO L82 PathProgramCache]: Analyzing trace with hash 644027978, now seen corresponding path program 1 times [2020-10-28 18:24:28,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:24:28,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442489758] [2020-10-28 18:24:28,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:24:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:29,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:30,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:30,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:31,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:32,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:33,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:33,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-28 18:24:33,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:24:33,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 18:24:33,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:33,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:24:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-28 18:24:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 18:24:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:35,049 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-28 18:24:35,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:24:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:35,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:35,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:35,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:24:35,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:24:35,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:24:35,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:35,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:24:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:24:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:24:35,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:35,119 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 18:24:35,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442489758] [2020-10-28 18:24:35,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:24:35,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:24:35,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817267670] [2020-10-28 18:24:35,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:24:35,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:24:35,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:24:35,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:24:35,122 INFO L87 Difference]: Start difference. First operand 98944 states and 168967 transitions. Second operand 4 states. [2020-10-28 18:24:36,298 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-28 18:24:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:24:53,668 INFO L93 Difference]: Finished difference Result 181254 states and 307339 transitions. [2020-10-28 18:24:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:24:53,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2020-10-28 18:24:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:24:53,898 INFO L225 Difference]: With dead ends: 181254 [2020-10-28 18:24:53,898 INFO L226 Difference]: Without dead ends: 138755 [2020-10-28 18:24:54,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:24:54,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138755 states. [2020-10-28 18:25:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138755 to 138752. [2020-10-28 18:25:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138752 states. [2020-10-28 18:25:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138752 states to 138752 states and 235399 transitions. [2020-10-28 18:25:06,896 INFO L78 Accepts]: Start accepts. Automaton has 138752 states and 235399 transitions. Word has length 197 [2020-10-28 18:25:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:25:06,896 INFO L481 AbstractCegarLoop]: Abstraction has 138752 states and 235399 transitions. [2020-10-28 18:25:06,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:25:06,897 INFO L276 IsEmpty]: Start isEmpty. Operand 138752 states and 235399 transitions. [2020-10-28 18:25:07,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 18:25:07,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:25:07,238 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] [2020-10-28 18:25:07,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:25:07,238 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:25:07,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:25:07,239 INFO L82 PathProgramCache]: Analyzing trace with hash 414812477, now seen corresponding path program 1 times [2020-10-28 18:25:07,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:25:07,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238013953] [2020-10-28 18:25:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:25:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:07,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:07,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:07,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:08,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:08,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:12,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:12,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-28 18:25:12,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:25:12,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:25:12,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:12,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:12,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:25:12,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:25:12,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-28 18:25:12,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:25:13,652 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-28 18:25:13,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:25:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:13,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:13,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:13,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:25:13,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:25:13,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:25:13,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:13,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:25:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:25:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:25:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:25:13,783 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 18:25:13,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238013953] [2020-10-28 18:25:13,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:25:13,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:25:13,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516957711] [2020-10-28 18:25:13,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:25:13,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:25:13,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:25:13,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:25:13,785 INFO L87 Difference]: Start difference. First operand 138752 states and 235399 transitions. Second operand 5 states.