/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:10:31,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:10:31,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:10:31,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:10:31,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:10:31,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:10:31,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:10:31,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:10:31,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:10:31,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:10:31,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:10:31,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:10:31,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:10:31,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:10:31,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:10:31,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:10:31,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:10:31,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:10:31,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:10:31,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:10:31,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:10:31,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:10:31,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:10:31,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:10:31,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:10:31,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:10:31,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:10:31,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:10:31,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:10:31,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:10:31,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:10:31,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:10:31,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:10:31,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:10:31,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:10:31,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:10:31,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:10:31,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:10:31,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:10:31,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:10:31,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:10:31,502 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 [2020-10-29 14:10:31,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:10:31,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:10:31,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:10:31,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:10:31,563 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:10:31,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:10:31,564 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:10:31,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:10:31,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:10:31,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:10:31,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:10:31,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:10:31,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:10:31,566 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:10:31,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:10:31,566 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:10:31,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:10:31,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:10:31,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:10:31,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:10:31,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:10:31,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:10:31,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:10:31,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:10:31,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:10:31,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:10:31,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:10:31,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:10:31,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:10:31,570 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:10:32,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:10:32,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:10:32,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:10:32,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:10:32,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:10:32,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 14:10:32,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/defc846e1/f105f2eab83c4d52a9d712c0dc68bb32/FLAG7db52710e [2020-10-29 14:10:32,945 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:10:32,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 14:10:32,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/defc846e1/f105f2eab83c4d52a9d712c0dc68bb32/FLAG7db52710e [2020-10-29 14:10:33,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/defc846e1/f105f2eab83c4d52a9d712c0dc68bb32 [2020-10-29 14:10:33,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:10:33,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:10:33,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:10:33,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:10:33,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:10:33,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:10:33" (1/1) ... [2020-10-29 14:10:33,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:33, skipping insertion in model container [2020-10-29 14:10:33,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:10:33" (1/1) ... [2020-10-29 14:10:33,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:10:33,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:10:34,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:10:34,751 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:10:35,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:10:35,386 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:10:35,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:35 WrapperNode [2020-10-29 14:10:35,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:10:35,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:10:35,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:10:35,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:10:35,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:35" (1/1) ... [2020-10-29 14:10:35,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:35" (1/1) ... [2020-10-29 14:10:35,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:35" (1/1) ... [2020-10-29 14:10:35,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:35" (1/1) ... [2020-10-29 14:10:35,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:35" (1/1) ... [2020-10-29 14:10:35,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:35" (1/1) ... [2020-10-29 14:10:35,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:35" (1/1) ... [2020-10-29 14:10:35,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:10:35,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:10:35,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:10:35,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:10:35,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:35" (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 [2020-10-29 14:10:35,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:10:35,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:10:35,780 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:10:35,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:10:35,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:10:35,847 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:10:35,847 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:10:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:10:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:10:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:10:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:10:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:10:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:10:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:10:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:10:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:10:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:10:35,852 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:10:35,852 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:10:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 14:10:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:10:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:10:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:10:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:10:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:10:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:10:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:10:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:10:35,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:10:43,609 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:10:43,609 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:10:43,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:10:43 BoogieIcfgContainer [2020-10-29 14:10:43,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:10:43,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:10:43,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:10:43,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:10:43,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:10:33" (1/3) ... [2020-10-29 14:10:43,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf5d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:10:43, skipping insertion in model container [2020-10-29 14:10:43,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:35" (2/3) ... [2020-10-29 14:10:43,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf5d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:10:43, skipping insertion in model container [2020-10-29 14:10:43,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:10:43" (3/3) ... [2020-10-29 14:10:43,623 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 14:10:43,636 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:10:43,642 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:10:43,656 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:10:43,692 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:10:43,692 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:10:43,692 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:10:43,692 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:10:43,692 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:10:43,692 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:10:43,692 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:10:43,693 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:10:43,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states. [2020-10-29 14:10:43,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-29 14:10:43,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:10:43,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:10:43,785 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:10:43,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:10:43,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1601469669, now seen corresponding path program 1 times [2020-10-29 14:10:43,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:10:43,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638424591] [2020-10-29 14:10:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:10:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:44,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:44,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:45,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:45,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:46,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:46,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:47,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:48,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:49,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:49,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:49,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-29 14:10:49,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:10:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5173 [2020-10-29 14:10:49,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:49,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:10:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:10:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 14:10:49,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 14:10:50,258 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2020-10-29 14:10:52,696 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:10:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:10:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:52,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:52,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:52,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:10:52,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:10:52,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 14:10:52,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:52,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:10:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:10:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:10:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:10:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:10:53,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638424591] [2020-10-29 14:10:53,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:10:53,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:10:53,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266629879] [2020-10-29 14:10:53,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:10:53,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:10:53,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:10:53,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:10:53,391 INFO L87 Difference]: Start difference. First operand 1533 states. Second operand 5 states. [2020-10-29 14:11:12,726 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:11:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:11:14,685 INFO L93 Difference]: Finished difference Result 4443 states and 7870 transitions. [2020-10-29 14:11:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:11:14,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 377 [2020-10-29 14:11:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:11:14,732 INFO L225 Difference]: With dead ends: 4443 [2020-10-29 14:11:14,733 INFO L226 Difference]: Without dead ends: 2979 [2020-10-29 14:11:14,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:11:14,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2020-10-29 14:11:15,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2976. [2020-10-29 14:11:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2976 states. [2020-10-29 14:11:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 5019 transitions. [2020-10-29 14:11:15,053 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 5019 transitions. Word has length 377 [2020-10-29 14:11:15,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:11:15,057 INFO L481 AbstractCegarLoop]: Abstraction has 2976 states and 5019 transitions. [2020-10-29 14:11:15,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:11:15,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 5019 transitions. [2020-10-29 14:11:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-29 14:11:15,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:11:15,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:11:15,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:11:15,081 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:11:15,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:11:15,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1090584555, now seen corresponding path program 1 times [2020-10-29 14:11:15,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:11:15,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319823673] [2020-10-29 14:11:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:11:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:15,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:15,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:16,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:18,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:19,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:20,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:20,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-29 14:11:20,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:11:20,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 14:11:20,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:20,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:11:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:11:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 14:11:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:11:23,034 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:11:23,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:11:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:23,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:23,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:11:23,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:11:23,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:11:23,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:23,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:11:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:11:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:11:23,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:23,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:11:23,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319823673] [2020-10-29 14:11:23,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:11:23,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:11:23,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153634966] [2020-10-29 14:11:23,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:11:23,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:11:23,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:11:23,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:11:23,458 INFO L87 Difference]: Start difference. First operand 2976 states and 5019 transitions. Second operand 5 states. [2020-10-29 14:11:46,276 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:11:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:11:49,882 INFO L93 Difference]: Finished difference Result 8786 states and 14813 transitions. [2020-10-29 14:11:49,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:11:49,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 377 [2020-10-29 14:11:49,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:11:49,918 INFO L225 Difference]: With dead ends: 8786 [2020-10-29 14:11:49,919 INFO L226 Difference]: Without dead ends: 5879 [2020-10-29 14:11:49,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:11:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2020-10-29 14:11:50,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5876. [2020-10-29 14:11:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5876 states. [2020-10-29 14:11:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 9879 transitions. [2020-10-29 14:11:50,364 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 9879 transitions. Word has length 377 [2020-10-29 14:11:50,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:11:50,365 INFO L481 AbstractCegarLoop]: Abstraction has 5876 states and 9879 transitions. [2020-10-29 14:11:50,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:11:50,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 9879 transitions. [2020-10-29 14:11:50,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-29 14:11:50,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:11:50,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:11:50,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:11:50,387 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:11:50,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:11:50,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1113381414, now seen corresponding path program 1 times [2020-10-29 14:11:50,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:11:50,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945248714] [2020-10-29 14:11:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:11:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:50,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:50,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:51,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:51,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:51,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:53,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:53,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:53,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:54,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:54,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:54,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:55,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:55,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:55,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-29 14:11:55,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 14:11:55,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-29 14:11:55,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:55,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:55,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:11:55,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 14:11:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 14:11:55,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:58,138 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:11:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:11:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:58,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:58,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:58,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:11:58,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:11:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:11:58,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:58,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:11:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:11:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:11:58,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:11:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:11:58,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945248714] [2020-10-29 14:11:58,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:11:58,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:11:58,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116864669] [2020-10-29 14:11:58,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:11:58,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:11:58,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:11:58,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:11:58,558 INFO L87 Difference]: Start difference. First operand 5876 states and 9879 transitions. Second operand 4 states. [2020-10-29 14:12:22,286 WARN L193 SmtUtils]: Spent 2.48 s on a formula simplification that was a NOOP. DAG size: 429 [2020-10-29 14:12:24,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:12:24,491 INFO L93 Difference]: Finished difference Result 17201 states and 28877 transitions. [2020-10-29 14:12:24,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:12:24,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 379 [2020-10-29 14:12:24,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:12:24,550 INFO L225 Difference]: With dead ends: 17201 [2020-10-29 14:12:24,550 INFO L226 Difference]: Without dead ends: 11586 [2020-10-29 14:12:24,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:12:24,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2020-10-29 14:12:25,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 11583. [2020-10-29 14:12:25,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11583 states. [2020-10-29 14:12:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11583 states to 11583 states and 19402 transitions. [2020-10-29 14:12:25,434 INFO L78 Accepts]: Start accepts. Automaton has 11583 states and 19402 transitions. Word has length 379 [2020-10-29 14:12:25,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:12:25,435 INFO L481 AbstractCegarLoop]: Abstraction has 11583 states and 19402 transitions. [2020-10-29 14:12:25,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:12:25,435 INFO L276 IsEmpty]: Start isEmpty. Operand 11583 states and 19402 transitions. [2020-10-29 14:12:25,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-29 14:12:25,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:12:25,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:12:25,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:12:25,473 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:12:25,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:12:25,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1952148904, now seen corresponding path program 1 times [2020-10-29 14:12:25,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:12:25,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667746341] [2020-10-29 14:12:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:12:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:25,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:25,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:26,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:26,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:27,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:27,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:28,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:28,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:29,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:29,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:30,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:30,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:30,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-29 14:12:30,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 14:12:30,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 14:12:30,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:30,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:12:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:12:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 14:12:30,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:12:33,180 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:12:33,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:12:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:33,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:33,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:33,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:12:33,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:12:33,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 14:12:33,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:33,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:12:33,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:12:33,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:12:33,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:12:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:12:33,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667746341] [2020-10-29 14:12:33,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:12:33,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:12:33,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004815870] [2020-10-29 14:12:33,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:12:33,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:12:33,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:12:33,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:12:33,566 INFO L87 Difference]: Start difference. First operand 11583 states and 19402 transitions. Second operand 5 states. [2020-10-29 14:12:50,766 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:12:52,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:12:52,753 INFO L93 Difference]: Finished difference Result 34238 states and 57317 transitions. [2020-10-29 14:12:52,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:12:52,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 379 [2020-10-29 14:12:52,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:12:52,817 INFO L225 Difference]: With dead ends: 34238 [2020-10-29 14:12:52,818 INFO L226 Difference]: Without dead ends: 22679 [2020-10-29 14:12:52,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:12:52,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22679 states. [2020-10-29 14:12:54,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22679 to 22676. [2020-10-29 14:12:54,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22676 states. [2020-10-29 14:12:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22676 states to 22676 states and 37798 transitions. [2020-10-29 14:12:54,450 INFO L78 Accepts]: Start accepts. Automaton has 22676 states and 37798 transitions. Word has length 379 [2020-10-29 14:12:54,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:12:54,450 INFO L481 AbstractCegarLoop]: Abstraction has 22676 states and 37798 transitions. [2020-10-29 14:12:54,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:12:54,451 INFO L276 IsEmpty]: Start isEmpty. Operand 22676 states and 37798 transitions. [2020-10-29 14:12:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-29 14:12:54,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:12:54,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:12:54,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:12:54,510 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:12:54,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:12:54,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1349257798, now seen corresponding path program 1 times [2020-10-29 14:12:54,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:12:54,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715285614] [2020-10-29 14:12:54,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:12:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:54,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:54,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:55,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:55,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:55,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:55,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:55,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:55,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:58,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:58,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:59,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:59,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:59,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:59,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-29 14:12:59,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:12:59,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 14:12:59,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:59,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:59,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:12:59,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 14:12:59,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 14:12:59,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:13:02,204 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:13:02,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:13:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:02,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:02,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:13:02,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:13:02,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:13:02,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:02,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:13:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:13:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:13:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:13:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:13:02,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715285614] [2020-10-29 14:13:02,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:13:02,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:13:02,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742929741] [2020-10-29 14:13:02,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:13:02,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:13:02,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:13:02,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:13:02,498 INFO L87 Difference]: Start difference. First operand 22676 states and 37798 transitions. Second operand 4 states. [2020-10-29 14:13:33,078 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification that was a NOOP. DAG size: 429 [2020-10-29 14:13:36,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:13:36,967 INFO L93 Difference]: Finished difference Result 66074 states and 109904 transitions. [2020-10-29 14:13:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:13:36,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 379 [2020-10-29 14:13:36,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:13:37,066 INFO L225 Difference]: With dead ends: 66074 [2020-10-29 14:13:37,067 INFO L226 Difference]: Without dead ends: 44327 [2020-10-29 14:13:37,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:13:37,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44327 states. [2020-10-29 14:13:39,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44327 to 44324. [2020-10-29 14:13:39,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44324 states. [2020-10-29 14:13:39,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44324 states to 44324 states and 73508 transitions. [2020-10-29 14:13:39,881 INFO L78 Accepts]: Start accepts. Automaton has 44324 states and 73508 transitions. Word has length 379 [2020-10-29 14:13:39,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:13:39,882 INFO L481 AbstractCegarLoop]: Abstraction has 44324 states and 73508 transitions. [2020-10-29 14:13:39,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:13:39,882 INFO L276 IsEmpty]: Start isEmpty. Operand 44324 states and 73508 transitions. [2020-10-29 14:13:40,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-29 14:13:40,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:13:40,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:13:40,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:13:40,052 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:13:40,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:13:40,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1804499479, now seen corresponding path program 1 times [2020-10-29 14:13:40,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:13:40,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369206509] [2020-10-29 14:13:40,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:13:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:40,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:40,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:40,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:41,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:41,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:41,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:42,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:42,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:43,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:44,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:45,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:45,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-29 14:13:45,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 14:13:45,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-29 14:13:45,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:45,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:13:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:13:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-29 14:13:45,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:13:47,799 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:13:47,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:13:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:47,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:47,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:13:47,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:13:47,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:13:47,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:47,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:13:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:13:47,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:13:47,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:13:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:13:48,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369206509] [2020-10-29 14:13:48,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:13:48,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:13:48,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390604404] [2020-10-29 14:13:48,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:13:48,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:13:48,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:13:48,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:13:48,044 INFO L87 Difference]: Start difference. First operand 44324 states and 73508 transitions. Second operand 5 states. [2020-10-29 14:14:09,144 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:14:11,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:14:11,916 INFO L93 Difference]: Finished difference Result 130802 states and 216728 transitions. [2020-10-29 14:14:11,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:14:11,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 380 [2020-10-29 14:14:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:14:12,072 INFO L225 Difference]: With dead ends: 130802 [2020-10-29 14:14:12,073 INFO L226 Difference]: Without dead ends: 87059 [2020-10-29 14:14:12,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:14:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87059 states.