/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/ldv-regression/ex3_forlist.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:37:53,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:37:53,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:37:53,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:37:53,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:37:53,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:37:53,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:37:53,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:37:53,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:37:53,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:37:53,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:37:53,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:37:53,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:37:53,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:37:53,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:37:53,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:37:53,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:37:53,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:37:53,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:37:53,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:37:53,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:37:53,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:37:53,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:37:53,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:37:53,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:37:53,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:37:53,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:37:53,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:37:53,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:37:53,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:37:53,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:37:53,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:37:53,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:37:53,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:37:53,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:37:53,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:37:53,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:37:53,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:37:53,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:37:53,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:37:53,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:37:53,549 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 14:37:53,577 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:37:53,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:37:53,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:37:53,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:37:53,579 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:37:53,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:37:53,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:37:53,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:37:53,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:37:53,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:37:53,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:37:53,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:37:53,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:37:53,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:37:53,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:37:53,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:37:53,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:37:53,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:37:53,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:37:53,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:37:53,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:37:53,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:37:53,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:37:53,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:37:53,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:37:53,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:37:53,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:37:53,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:37:53,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:37:53,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:37:53,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:37:53,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:37:53,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:37:53,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:37:53,973 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:37:53,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/ex3_forlist.i [2020-10-28 14:37:54,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/076eb204d/f5b9e368d34742329fdaaa82087dda13/FLAG5f08bdbba [2020-10-28 14:37:54,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:37:54,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/ex3_forlist.i [2020-10-28 14:37:54,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/076eb204d/f5b9e368d34742329fdaaa82087dda13/FLAG5f08bdbba [2020-10-28 14:37:54,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/076eb204d/f5b9e368d34742329fdaaa82087dda13 [2020-10-28 14:37:54,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:37:54,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:37:54,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:37:54,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:37:54,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:37:54,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:37:54" (1/1) ... [2020-10-28 14:37:54,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67787bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:54, skipping insertion in model container [2020-10-28 14:37:54,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:37:54" (1/1) ... [2020-10-28 14:37:55,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:37:55,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:37:55,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:37:55,191 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:37:55,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:37:55,234 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:37:55,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:55 WrapperNode [2020-10-28 14:37:55,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:37:55,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:37:55,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:37:55,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:37:55,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:55" (1/1) ... [2020-10-28 14:37:55,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:55" (1/1) ... [2020-10-28 14:37:55,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:55" (1/1) ... [2020-10-28 14:37:55,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:55" (1/1) ... [2020-10-28 14:37:55,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:55" (1/1) ... [2020-10-28 14:37:55,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:55" (1/1) ... [2020-10-28 14:37:55,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:55" (1/1) ... [2020-10-28 14:37:55,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:37:55,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:37:55,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:37:55,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:37:55,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:55" (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 14:37:55,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:37:55,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:37:55,352 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:37:55,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-28 14:37:55,352 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 14:37:55,352 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-28 14:37:55,352 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-10-28 14:37:55,352 INFO L138 BoogieDeclarations]: Found implementation of procedure malloc [2020-10-28 14:37:55,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:37:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:37:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:37:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:37:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:37:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-28 14:37:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 14:37:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:37:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:37:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-28 14:37:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:37:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-10-28 14:37:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:37:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:37:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:37:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:37:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:37:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:37:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:37:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:37:55,807 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:37:55,807 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 14:37:55,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:37:55 BoogieIcfgContainer [2020-10-28 14:37:55,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:37:55,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:37:55,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:37:55,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:37:55,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:37:54" (1/3) ... [2020-10-28 14:37:55,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793d77b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:37:55, skipping insertion in model container [2020-10-28 14:37:55,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:55" (2/3) ... [2020-10-28 14:37:55,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793d77b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:37:55, skipping insertion in model container [2020-10-28 14:37:55,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:37:55" (3/3) ... [2020-10-28 14:37:55,818 INFO L111 eAbstractionObserver]: Analyzing ICFG ex3_forlist.i [2020-10-28 14:37:55,834 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:37:55,839 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:37:55,854 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:37:55,913 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:37:55,913 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:37:55,914 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:37:55,914 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:37:55,914 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:37:55,914 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:37:55,914 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:37:55,914 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:37:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-28 14:37:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 14:37:55,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:37:55,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 14:37:55,944 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:37:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:37:55,951 INFO L82 PathProgramCache]: Analyzing trace with hash 2136243483, now seen corresponding path program 1 times [2020-10-28 14:37:55,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:37:55,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415725357] [2020-10-28 14:37:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:37:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:56,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:56,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:56,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:58,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:58,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 14:37:58,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:37:58,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2299 [2020-10-28 14:37:58,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:58,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:58,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 14:37:58,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:58,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:37:58,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:37:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:58,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:58,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:58,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:58,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:58,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:37:58,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:58,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:58,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:37:58,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:37:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:58,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:58,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:37:58,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:37:58,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:37:58,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:58,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:58,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:58,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:37:58,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:37:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:58,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:58,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:58,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:58,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:58,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:37:58,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:58,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:58,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:37:58,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 14:37:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:58,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:58,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:58,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:58,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:37:58,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:58,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:58,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:37:58,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:37:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:58,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:58,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:58,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:58,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:37:58,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:37:58,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:37:58,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:58,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:58,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:37:58,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 14:37:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:58,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:58,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:58,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:37:58,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:58,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:37:58,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:58,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:37:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:58,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:37:58,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415725357] [2020-10-28 14:37:58,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:37:58,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:37:58,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367588014] [2020-10-28 14:37:58,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:37:58,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:37:58,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:37:58,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:37:58,764 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 5 states. [2020-10-28 14:37:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:37:59,176 INFO L93 Difference]: Finished difference Result 114 states and 166 transitions. [2020-10-28 14:37:59,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:37:59,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-28 14:37:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:37:59,188 INFO L225 Difference]: With dead ends: 114 [2020-10-28 14:37:59,189 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 14:37:59,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:37:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 14:37:59,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2020-10-28 14:37:59,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 14:37:59,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-28 14:37:59,246 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 40 [2020-10-28 14:37:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:37:59,246 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-28 14:37:59,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:37:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-28 14:37:59,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 14:37:59,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:37:59,249 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 14:37:59,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:37:59,250 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:37:59,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:37:59,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1748780603, now seen corresponding path program 1 times [2020-10-28 14:37:59,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:37:59,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744766036] [2020-10-28 14:37:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:37:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:59,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:59,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:59,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:59,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:02,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:02,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 14:38:02,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:38:02,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3545 [2020-10-28 14:38:02,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:02,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:02,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:02,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:38:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:38:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:38:02,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:02,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:02,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:02,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:02,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:02,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:38:02,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:02,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:02,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:02,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:02,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:02,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:02,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:38:02,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:38:02,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:02,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:38:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:38:02,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:38:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:02,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:02,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:02,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:38:02,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:02,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:38:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:02,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:02,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 14:38:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:02,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:02,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:02,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:02,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:02,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:38:02,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:02,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:38:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:02,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:02,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:38:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:02,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:02,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:02,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:38:02,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:38:02,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:38:02,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:02,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:02,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:02,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 14:38:02,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:02,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:02,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 14:38:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:02,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:02,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:02,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:38:02,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:38:02,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:38:02,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:02,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:02,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:02,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 14:38:02,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:02,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:38:02,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744766036] [2020-10-28 14:38:02,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:38:02,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:38:02,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580827316] [2020-10-28 14:38:02,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:38:02,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:02,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:38:02,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:38:02,990 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-10-28 14:38:03,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:03,354 INFO L93 Difference]: Finished difference Result 86 states and 104 transitions. [2020-10-28 14:38:03,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:38:03,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-28 14:38:03,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:03,357 INFO L225 Difference]: With dead ends: 86 [2020-10-28 14:38:03,357 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 14:38:03,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:38:03,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 14:38:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2020-10-28 14:38:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 14:38:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-28 14:38:03,372 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 40 [2020-10-28 14:38:03,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:03,372 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-28 14:38:03,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:38:03,372 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-28 14:38:03,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 14:38:03,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:03,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:03,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:38:03,375 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:03,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:03,375 INFO L82 PathProgramCache]: Analyzing trace with hash 724425949, now seen corresponding path program 1 times [2020-10-28 14:38:03,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:03,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727044202] [2020-10-28 14:38:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:03,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:03,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:03,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:03,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:03,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:08,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:08,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 14:38:08,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 14:38:08,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:38:08,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:08,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:38:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:38:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:38:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:08,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:08,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:08,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:08,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:08,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:38:08,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:08,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:08,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:08,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:08,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:08,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:08,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:08,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:38:08,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:08,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:08,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:38:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:38:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:38:08,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:08,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:38:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:08,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:08,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:08,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:08,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:08,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:08,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:08,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:38:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:08,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:08,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 14:38:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:08,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:08,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:08,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:08,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:38:08,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:08,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:38:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:08,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:38:08,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 14:38:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:08,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:08,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:08,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:38:08,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:38:08,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:38:08,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:08,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 14:38:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:08,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:08,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 14:38:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:08,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:08,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:08,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:08,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:38:08,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:38:08,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:38:08,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:08,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 14:38:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:08,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:38:08,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727044202] [2020-10-28 14:38:08,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:38:08,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:38:08,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665978152] [2020-10-28 14:38:08,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:38:08,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:08,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:38:08,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:38:08,592 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 7 states. [2020-10-28 14:38:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:09,019 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2020-10-28 14:38:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:38:09,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-28 14:38:09,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:09,024 INFO L225 Difference]: With dead ends: 87 [2020-10-28 14:38:09,025 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 14:38:09,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:38:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 14:38:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2020-10-28 14:38:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 14:38:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-28 14:38:09,046 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 42 [2020-10-28 14:38:09,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:09,046 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-28 14:38:09,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:38:09,047 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-28 14:38:09,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 14:38:09,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:09,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 14:38:09,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:38:09,052 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:09,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:09,053 INFO L82 PathProgramCache]: Analyzing trace with hash -132885761, now seen corresponding path program 2 times [2020-10-28 14:38:09,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:09,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876172421] [2020-10-28 14:38:09,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:09,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:09,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:09,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:09,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:09,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:10,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:14,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 14:38:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 14:38:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:38:14,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:14,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 14:38:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:38:14,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:14,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:14,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:14,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:14,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:14,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:38:14,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:14,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:14,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:14,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:14,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:14,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:14,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:14,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:14,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:14,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:38:14,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:38:14,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:14,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:14,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:38:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:14,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:14,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:14,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:14,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:14,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:38:14,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:14,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:14,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:14,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:38:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:14,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:14,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:14,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:14,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:38:14,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:14,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:14,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:14,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 14:38:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:14,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:14,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:14,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:14,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:38:14,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:38:14,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:14,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:14,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:14,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:14,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:14,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:14,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:14,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:38:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:14,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:14,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:14,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:38:14,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:14,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:38:14,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:14,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:38:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:38:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 14:38:14,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876172421] [2020-10-28 14:38:14,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:38:14,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:38:14,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734651986] [2020-10-28 14:38:14,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:38:14,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:14,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:38:14,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:38:14,218 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 6 states. [2020-10-28 14:38:14,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:14,596 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2020-10-28 14:38:14,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:38:14,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-28 14:38:14,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:14,600 INFO L225 Difference]: With dead ends: 81 [2020-10-28 14:38:14,601 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 14:38:14,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:38:14,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 14:38:14,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2020-10-28 14:38:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 14:38:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-28 14:38:14,623 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 44 [2020-10-28 14:38:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:14,624 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-28 14:38:14,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:38:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-28 14:38:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:38:14,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:14,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 14:38:14,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:38:14,626 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:14,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:14,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1710062435, now seen corresponding path program 1 times [2020-10-28 14:38:14,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:14,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099798511] [2020-10-28 14:38:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:14,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:14,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:14,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:15,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:17,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:18,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:18,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:19,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:19,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 14:38:19,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 14:38:19,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 14:38:19,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:19,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:38:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:38:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 14:38:19,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:19,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:19,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:19,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:19,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:19,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:38:19,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:19,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:38:19,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:19,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:19,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:19,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:19,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:38:19,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:19,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:38:19,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:19,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:38:19,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:19,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:38:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:19,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:20,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:20,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:20,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:20,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:20,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:20,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:20,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:38:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:20,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:20,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:20,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:20,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:20,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:20,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:20,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:20,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 14:38:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:20,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:20,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:38:20,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:20,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:38:20,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:20,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:38:20,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:20,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:38:20,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:20,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 14:38:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:20,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:20,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:20,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:20,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:38:20,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:38:20,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 14:38:20,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:20,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:20,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:38:20,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:38:20,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:38:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 14:38:20,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099798511] [2020-10-28 14:38:20,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:38:20,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:38:20,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931293489] [2020-10-28 14:38:20,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:38:20,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:20,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:38:20,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:38:20,179 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 14 states. [2020-10-28 14:38:21,196 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-28 14:38:21,346 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-28 14:38:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:21,734 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2020-10-28 14:38:21,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:38:21,734 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-28 14:38:21,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:21,738 INFO L225 Difference]: With dead ends: 104 [2020-10-28 14:38:21,738 INFO L226 Difference]: Without dead ends: 91 [2020-10-28 14:38:21,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=236, Invalid=576, Unknown=0, NotChecked=0, Total=812 [2020-10-28 14:38:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-28 14:38:21,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 74. [2020-10-28 14:38:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-28 14:38:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-10-28 14:38:21,760 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 46 [2020-10-28 14:38:21,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:21,760 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-10-28 14:38:21,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:38:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-10-28 14:38:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:38:21,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:21,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 14:38:21,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:38:21,763 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:21,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:21,763 INFO L82 PathProgramCache]: Analyzing trace with hash -994745017, now seen corresponding path program 1 times [2020-10-28 14:38:21,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:21,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093589829] [2020-10-28 14:38:21,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:21,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:21,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:22,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:26,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:26,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:38:26,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:38:26,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 14:38:26,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:26,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:38:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:38:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 14:38:26,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:26,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:26,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:26,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:26,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:26,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:38:26,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:26,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:26,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:26,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:26,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:38:26,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:26,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:26,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:26,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:26,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:38:26,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:38:26,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:26,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:38:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:38:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:26,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:26,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:26,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:26,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:26,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:26,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:26,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:26,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:26,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:38:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:26,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:26,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:26,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:26,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:26,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:26,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:26,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:26,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:27,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 14:38:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:27,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:27,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:27,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:38:27,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:27,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:38:27,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:27,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:27,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:38:27,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:27,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:38:27,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 14:38:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:27,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:27,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:27,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:38:27,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:27,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:38:27,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:27,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:27,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:38:27,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:38:27,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:38:27,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 14:38:27,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093589829] [2020-10-28 14:38:27,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:38:27,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:38:27,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484847786] [2020-10-28 14:38:27,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:38:27,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:27,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:38:27,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:38:27,300 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 13 states. [2020-10-28 14:38:28,018 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-28 14:38:28,222 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2020-10-28 14:38:28,708 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2020-10-28 14:38:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:29,063 INFO L93 Difference]: Finished difference Result 146 states and 179 transitions. [2020-10-28 14:38:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:38:29,064 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-28 14:38:29,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:29,066 INFO L225 Difference]: With dead ends: 146 [2020-10-28 14:38:29,066 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 14:38:29,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:38:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 14:38:29,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 99. [2020-10-28 14:38:29,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 14:38:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2020-10-28 14:38:29,116 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 49 [2020-10-28 14:38:29,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:29,116 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2020-10-28 14:38:29,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:38:29,117 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2020-10-28 14:38:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 14:38:29,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:29,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 14:38:29,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:38:29,124 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:29,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:29,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1685887631, now seen corresponding path program 1 times [2020-10-28 14:38:29,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:29,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315968141] [2020-10-28 14:38:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:29,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:29,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:29,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:29,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:29,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:31,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:38:34,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 14:38:34,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 14:38:34,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:38:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 14:38:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:34,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:34,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:34,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:34,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:34,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:34,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:34,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:34,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:38:34,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:38:34,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:34,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:34,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:38:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:34,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:34,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:38:34,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:38:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:34,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:38:34,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:34,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:34,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 14:38:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:38:34,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:38:34,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:38:34,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:34,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:34,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:34,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 14:38:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:38:34,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:34,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:38:34,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:38:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:38:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:34,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 14:38:34,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315968141] [2020-10-28 14:38:34,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:38:34,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:38:34,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178853604] [2020-10-28 14:38:34,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:38:34,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:34,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:38:34,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:38:34,296 INFO L87 Difference]: Start difference. First operand 99 states and 123 transitions. Second operand 7 states. [2020-10-28 14:38:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:34,761 INFO L93 Difference]: Finished difference Result 176 states and 225 transitions. [2020-10-28 14:38:34,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:38:34,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-28 14:38:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:34,763 INFO L225 Difference]: With dead ends: 176 [2020-10-28 14:38:34,763 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 14:38:34,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:38:34,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 14:38:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 103. [2020-10-28 14:38:34,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 14:38:34,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2020-10-28 14:38:34,820 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 127 transitions. Word has length 50 [2020-10-28 14:38:34,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:34,820 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 127 transitions. [2020-10-28 14:38:34,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:38:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 127 transitions. [2020-10-28 14:38:34,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:38:34,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:34,824 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 14:38:34,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:38:34,824 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:34,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:34,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1207003169, now seen corresponding path program 1 times [2020-10-28 14:38:34,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:34,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245061028] [2020-10-28 14:38:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:34,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:35,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:35,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:35,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:36,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:36,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:37,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:38,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:38,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:38,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:39,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:39,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:39,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:39,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:38:39,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-28 14:38:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 14:38:39,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:39,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:38:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:38:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 14:38:39,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:39,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:39,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:39,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:39,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:39,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:38:39,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:39,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:38:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:39,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:39,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:39,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:38:39,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:38:39,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:39,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:38:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:38:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:40,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:40,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:40,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:40,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:40,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:38:40,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:40,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:40,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:40,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:38:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:40,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:40,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:40,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:40,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:38:40,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:40,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:40,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 14:38:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:40,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:40,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:38:40,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:40,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 14:38:40,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:40,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:38:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:38:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:40,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:38:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:40,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:40,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:38:40,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:40,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:38:40,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:40,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:38:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:38:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:38:40,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 14:38:40,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245061028] [2020-10-28 14:38:40,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:38:40,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:38:40,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085155768] [2020-10-28 14:38:40,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:38:40,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:40,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:38:40,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:38:40,333 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. Second operand 15 states. [2020-10-28 14:38:40,834 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-28 14:38:41,329 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-28 14:38:41,797 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-28 14:38:42,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:42,399 INFO L93 Difference]: Finished difference Result 199 states and 248 transitions. [2020-10-28 14:38:42,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:38:42,399 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-28 14:38:42,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:42,401 INFO L225 Difference]: With dead ends: 199 [2020-10-28 14:38:42,407 INFO L226 Difference]: Without dead ends: 152 [2020-10-28 14:38:42,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=233, Invalid=889, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 14:38:42,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-28 14:38:42,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 112. [2020-10-28 14:38:42,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-28 14:38:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 136 transitions. [2020-10-28 14:38:42,439 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 136 transitions. Word has length 52 [2020-10-28 14:38:42,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:42,439 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 136 transitions. [2020-10-28 14:38:42,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:38:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 136 transitions. [2020-10-28 14:38:42,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:38:42,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:42,441 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:42,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:38:42,441 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:42,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:42,442 INFO L82 PathProgramCache]: Analyzing trace with hash 217408589, now seen corresponding path program 1 times [2020-10-28 14:38:42,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:42,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778111830] [2020-10-28 14:38:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:42,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:42,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:42,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:42,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:43,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:43,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:43,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:45,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:45,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:45,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:45,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:47,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:47,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:38:47,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 14:38:47,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 14:38:47,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:47,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:38:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:38:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 14:38:47,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:47,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:47,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:47,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:47,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:38:47,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:47,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:38:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:47,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:47,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:47,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:47,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:38:47,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:47,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:38:47,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:47,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:47,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:47,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:47,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:38:47,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:47,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:38:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:47,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:47,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:47,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:47,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:47,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:47,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:47,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:38:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:47,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:47,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:47,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:47,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:47,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:47,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 14:38:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:47,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:47,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:47,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:38:47,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:38:47,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:47,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:38:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:38:47,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:47,724 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 5: A-local: [(f_~i~1_3 Int)], B-local: []. [2020-10-28 14:38:47,725 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 6: A-local: [(f_~i~1_3 Int)], B-local: []. [2020-10-28 14:38:47,726 ERROR L253 erpolLogProxyWrapper]: Interpolant 7 not inductive [2020-10-28 14:38:47,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:38:47,727 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-28 14:38:47,732 INFO L168 Benchmark]: Toolchain (without parser) took 52764.42 ms. Allocated memory was 162.5 MB in the beginning and 761.3 MB in the end (delta: 598.7 MB). Free memory was 137.7 MB in the beginning and 645.1 MB in the end (delta: -507.4 MB). Peak memory consumption was 92.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:47,733 INFO L168 Benchmark]: CDTParser took 4.23 ms. Allocated memory is still 162.5 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:38:47,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.91 ms. Allocated memory is still 162.5 MB. Free memory was 136.9 MB in the beginning and 127.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:47,734 INFO L168 Benchmark]: Boogie Preprocessor took 41.11 ms. Allocated memory is still 162.5 MB. Free memory was 126.9 MB in the beginning and 125.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:47,735 INFO L168 Benchmark]: RCFGBuilder took 531.82 ms. Allocated memory is still 162.5 MB. Free memory was 125.2 MB in the beginning and 104.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:47,737 INFO L168 Benchmark]: TraceAbstraction took 51919.81 ms. Allocated memory was 162.5 MB in the beginning and 761.3 MB in the end (delta: 598.7 MB). Free memory was 103.9 MB in the beginning and 645.1 MB in the end (delta: -541.2 MB). Peak memory consumption was 58.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:47,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.23 ms. Allocated memory is still 162.5 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.91 ms. Allocated memory is still 162.5 MB. Free memory was 136.9 MB in the beginning and 127.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.11 ms. Allocated memory is still 162.5 MB. Free memory was 126.9 MB in the beginning and 125.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 531.82 ms. Allocated memory is still 162.5 MB. Free memory was 125.2 MB in the beginning and 104.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 51919.81 ms. Allocated memory was 162.5 MB in the beginning and 761.3 MB in the end (delta: 598.7 MB). Free memory was 103.9 MB in the beginning and 645.1 MB in the end (delta: -541.2 MB). Peak memory consumption was 58.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...