/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=DEEPEST --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/eca-rers2012/Problem06_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:22:50,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:22:50,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:22:50,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:22:50,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:22:50,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:22:50,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:22:50,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:22:50,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:22:50,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:22:50,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:22:50,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:22:50,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:22:50,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:22:50,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:22:50,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:22:50,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:22:50,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:22:50,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:22:50,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:22:50,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:22:50,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:22:50,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:22:50,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:22:50,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:22:50,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:22:50,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:22:50,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:22:50,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:22:50,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:22:50,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:22:50,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:22:50,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:22:50,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:22:50,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:22:50,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:22:50,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:22:50,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:22:50,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:22:50,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:22:50,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:22:50,493 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 [2020-10-27 16:22:50,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:22:50,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:22:50,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:22:50,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:22:50,549 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:22:50,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:22:50,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:22:50,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:22:50,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:22:50,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:22:50,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:22:50,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:22:50,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:22:50,552 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:22:50,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:22:50,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:22:50,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:22:50,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:22:50,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:22:50,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:22:50,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:22:50,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:22:50,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:22:50,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:22:50,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:22:50,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:22:50,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:22:50,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:22:50,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:22:50,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:22:50,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:22:50,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:22:50,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:22:50,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:22:50,984 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:22:50,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label00.c [2020-10-27 16:22:51,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bef64cae/5861a620f4ff40d799c488d5fe91d8bf/FLAGc14f82ba9 [2020-10-27 16:22:52,187 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:22:52,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label00.c [2020-10-27 16:22:52,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bef64cae/5861a620f4ff40d799c488d5fe91d8bf/FLAGc14f82ba9 [2020-10-27 16:22:52,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bef64cae/5861a620f4ff40d799c488d5fe91d8bf [2020-10-27 16:22:52,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:22:52,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:22:52,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:22:52,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:22:52,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:22:52,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:22:52" (1/1) ... [2020-10-27 16:22:52,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f54129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:52, skipping insertion in model container [2020-10-27 16:22:52,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:22:52" (1/1) ... [2020-10-27 16:22:52,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:22:52,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:22:54,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:22:54,864 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:22:55,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:22:56,035 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:22:56,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:56 WrapperNode [2020-10-27 16:22:56,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:22:56,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:22:56,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:22:56,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:22:56,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:56" (1/1) ... [2020-10-27 16:22:56,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:56" (1/1) ... [2020-10-27 16:22:56,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:56" (1/1) ... [2020-10-27 16:22:56,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:56" (1/1) ... [2020-10-27 16:22:56,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:56" (1/1) ... [2020-10-27 16:22:56,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:56" (1/1) ... [2020-10-27 16:22:56,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:56" (1/1) ... [2020-10-27 16:22:56,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:22:56,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:22:56,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:22:56,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:22:56,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:56" (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 [2020-10-27 16:22:56,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:22:56,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:22:56,642 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:22:56,642 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:22:56,642 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:22:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:22:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:22:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:22:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:22:56,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:22:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:22:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:22:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:22:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:22:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:22:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:22:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:22:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:22:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:22:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:22:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:22:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:22:56,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:22:56,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:22:56,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:22:56,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:22:56,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:23:04,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:23:04,624 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:23:04,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:23:04 BoogieIcfgContainer [2020-10-27 16:23:04,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:23:04,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:23:04,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:23:04,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:23:04,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:22:52" (1/3) ... [2020-10-27 16:23:04,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3e1955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:23:04, skipping insertion in model container [2020-10-27 16:23:04,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:56" (2/3) ... [2020-10-27 16:23:04,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3e1955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:23:04, skipping insertion in model container [2020-10-27 16:23:04,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:23:04" (3/3) ... [2020-10-27 16:23:04,638 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label00.c [2020-10-27 16:23:04,650 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:23:04,659 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:23:04,670 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:23:04,708 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:23:04,708 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:23:04,708 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:23:04,709 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:23:04,709 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:23:04,709 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:23:04,709 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:23:04,709 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:23:04,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:23:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2020-10-27 16:23:04,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:23:04,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:23:04,912 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:23:04,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:23:04,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1452167228, now seen corresponding path program 1 times [2020-10-27 16:23:04,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:23:04,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241481789] [2020-10-27 16:23:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:23:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:08,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:11,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:11,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 969 [2020-10-27 16:23:11,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:23:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5143 [2020-10-27 16:23:11,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 16:23:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:23:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-27 16:23:11,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:23:14,801 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-27 16:23:15,079 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-27 16:23:15,366 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-27 16:23:15,609 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-27 16:23:15,872 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-27 16:23:16,119 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-27 16:23:16,394 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-27 16:23:16,579 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-27 16:23:16,771 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-27 16:23:16,959 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-27 16:23:17,689 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:23:17,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:23:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:17,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:17,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:23:17,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:23:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 16:23:17,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:17,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:23:17,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:23:17,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:23:17,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:23:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:23:30,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241481789] [2020-10-27 16:23:30,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:23:30,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 16:23:30,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268911946] [2020-10-27 16:23:30,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 16:23:30,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:23:30,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 16:23:30,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-27 16:23:30,162 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-27 16:23:30,704 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 16:23:31,653 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2020-10-27 16:23:32,608 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2020-10-27 16:23:33,616 WARN L193 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 204 [2020-10-27 16:23:38,562 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 231 DAG size of output: 203 [2020-10-27 16:23:42,590 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 234 DAG size of output: 202 [2020-10-27 16:23:45,573 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 193 [2020-10-27 16:23:46,610 WARN L193 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 199 [2020-10-27 16:23:47,957 WARN L193 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 198 [2020-10-27 16:23:59,610 WARN L193 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 191 [2020-10-27 16:24:00,626 WARN L193 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 196 [2020-10-27 16:24:04,203 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 195 [2020-10-27 16:24:12,810 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 189 [2020-10-27 16:24:13,873 WARN L193 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 193 [2020-10-27 16:24:16,943 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 191 [2020-10-27 16:24:31,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:24:31,237 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-27 16:24:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:24:31,240 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 951 [2020-10-27 16:24:31,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:24:31,288 INFO L225 Difference]: With dead ends: 3401 [2020-10-27 16:24:31,289 INFO L226 Difference]: Without dead ends: 2020 [2020-10-27 16:24:31,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 16:24:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-27 16:24:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-27 16:24:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-27 16:24:31,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-27 16:24:31,478 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 951 [2020-10-27 16:24:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:24:31,481 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-27 16:24:31,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 16:24:31,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-27 16:24:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2020-10-27 16:24:31,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:24:31,544 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:24:31,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:24:31,545 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:24:31,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:24:31,546 INFO L82 PathProgramCache]: Analyzing trace with hash -812349989, now seen corresponding path program 1 times [2020-10-27 16:24:31,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:24:31,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672985483] [2020-10-27 16:24:31,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:24:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:24:31,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:24:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:24:36,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:24:36,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1041 [2020-10-27 16:24:36,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:24:36,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-27 16:24:36,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:24:36,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:24:36,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:24:36,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 957 [2020-10-27 16:24:36,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:24:38,428 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:24:38,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:24:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:24:38,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:24:38,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:24:38,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:24:38,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:24:38,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 16:24:38,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:24:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:24:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:24:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:24:38,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:24:38,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:24:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:24:38,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:24:38,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:24:38,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:24:38,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:24:38,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 16:24:38,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:24:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:24:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:24:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:24:38,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:24:40,093 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:24:40,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672985483] [2020-10-27 16:24:40,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:24:40,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:24:40,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175660986] [2020-10-27 16:24:40,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:24:40,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:24:40,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:24:40,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:24:40,099 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 5 states. [2020-10-27 16:24:40,704 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:24:58,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:24:58,460 INFO L93 Difference]: Finished difference Result 4399 states and 7437 transitions. [2020-10-27 16:24:58,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:24:58,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1021 [2020-10-27 16:24:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:24:58,482 INFO L225 Difference]: With dead ends: 4399 [2020-10-27 16:24:58,482 INFO L226 Difference]: Without dead ends: 3139 [2020-10-27 16:24:58,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:24:58,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-10-27 16:24:58,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3088. [2020-10-27 16:24:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3088 states. [2020-10-27 16:24:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 4567 transitions. [2020-10-27 16:24:58,585 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 4567 transitions. Word has length 1021 [2020-10-27 16:24:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:24:58,587 INFO L481 AbstractCegarLoop]: Abstraction has 3088 states and 4567 transitions. [2020-10-27 16:24:58,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:24:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 4567 transitions. [2020-10-27 16:24:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-27 16:24:58,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:24:58,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:24:58,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:24:58,610 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:24:58,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:24:58,611 INFO L82 PathProgramCache]: Analyzing trace with hash 506118067, now seen corresponding path program 1 times [2020-10-27 16:24:58,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:24:58,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234168108] [2020-10-27 16:24:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:24:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:24:58,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:24:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:03,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:03,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1052 [2020-10-27 16:25:03,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:25:03,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5180 [2020-10-27 16:25:03,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:25:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:25:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 16:25:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:25:04,545 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:25:04,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:25:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:04,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:04,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:25:04,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:25:04,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 16:25:04,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:25:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:25:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:25:04,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:25:04,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:25:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:04,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:04,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:04,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:25:04,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:25:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 16:25:04,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:25:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:25:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:25:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:25:04,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:25:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:04,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:25:04,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:25:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 16:25:04,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:25:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:25:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:25:04,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 16:25:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:25:05,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234168108] [2020-10-27 16:25:05,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:25:05,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 16:25:05,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702769558] [2020-10-27 16:25:05,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 16:25:05,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:25:05,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 16:25:05,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:25:05,781 INFO L87 Difference]: Start difference. First operand 3088 states and 4567 transitions. Second operand 8 states. [2020-10-27 16:25:06,056 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 16:25:06,696 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:25:08,375 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:25:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:25:38,280 INFO L93 Difference]: Finished difference Result 9816 states and 15838 transitions. [2020-10-27 16:25:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 16:25:38,282 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1030 [2020-10-27 16:25:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:25:38,326 INFO L225 Difference]: With dead ends: 9816 [2020-10-27 16:25:38,326 INFO L226 Difference]: Without dead ends: 7488 [2020-10-27 16:25:38,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 16:25:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7488 states. [2020-10-27 16:25:38,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7488 to 7398. [2020-10-27 16:25:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7398 states. [2020-10-27 16:25:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7398 states to 7398 states and 10583 transitions. [2020-10-27 16:25:38,607 INFO L78 Accepts]: Start accepts. Automaton has 7398 states and 10583 transitions. Word has length 1030 [2020-10-27 16:25:38,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:25:38,608 INFO L481 AbstractCegarLoop]: Abstraction has 7398 states and 10583 transitions. [2020-10-27 16:25:38,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 16:25:38,608 INFO L276 IsEmpty]: Start isEmpty. Operand 7398 states and 10583 transitions. [2020-10-27 16:25:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2020-10-27 16:25:38,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:25:38,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:25:38,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:25:38,659 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:25:38,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:25:38,660 INFO L82 PathProgramCache]: Analyzing trace with hash 471871099, now seen corresponding path program 1 times [2020-10-27 16:25:38,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:25:38,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917604569] [2020-10-27 16:25:38,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:25:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:44,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:44,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1056 [2020-10-27 16:25:44,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:25:44,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-10-27 16:25:44,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:25:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:25:44,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 16:25:44,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:25:44,510 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:25:44,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:25:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:44,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:44,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:44,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:25:44,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:25:44,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:25:44,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:44,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:25:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:25:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:25:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:25:44,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:25:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:44,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:44,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:44,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:25:44,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:25:44,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 16:25:44,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:25:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:25:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:25:44,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:25:44,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:25:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:44,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:44,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:44,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:25:44,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:25:44,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 16:25:44,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:25:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:25:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 16:25:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:25:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:25:45,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917604569] [2020-10-27 16:25:45,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:25:45,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:25:45,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107294754] [2020-10-27 16:25:45,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:25:45,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:25:45,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:25:45,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:25:45,814 INFO L87 Difference]: Start difference. First operand 7398 states and 10583 transitions. Second operand 7 states. [2020-10-27 16:25:46,508 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 16:25:47,772 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 16:26:09,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:26:09,615 INFO L93 Difference]: Finished difference Result 17792 states and 26029 transitions. [2020-10-27 16:26:09,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 16:26:09,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1034 [2020-10-27 16:26:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:26:09,688 INFO L225 Difference]: With dead ends: 17792 [2020-10-27 16:26:09,689 INFO L226 Difference]: Without dead ends: 11154 [2020-10-27 16:26:09,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 16:26:09,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2020-10-27 16:26:10,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 11000. [2020-10-27 16:26:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11000 states. [2020-10-27 16:26:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11000 states to 11000 states and 15183 transitions. [2020-10-27 16:26:10,092 INFO L78 Accepts]: Start accepts. Automaton has 11000 states and 15183 transitions. Word has length 1034 [2020-10-27 16:26:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:26:10,096 INFO L481 AbstractCegarLoop]: Abstraction has 11000 states and 15183 transitions. [2020-10-27 16:26:10,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:26:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 11000 states and 15183 transitions. [2020-10-27 16:26:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2020-10-27 16:26:10,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:26:10,138 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:26:10,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:26:10,138 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:26:10,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:26:10,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1845622730, now seen corresponding path program 1 times [2020-10-27 16:26:10,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:26:10,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022535752] [2020-10-27 16:26:10,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:26:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:10,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:15,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:15,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1059 [2020-10-27 16:26:15,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:26:15,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-27 16:26:15,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:15,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:26:15,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:26:15,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 16:26:15,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:15,953 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:26:15,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:26:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:15,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:15,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:26:15,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:26:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 16:26:15,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:26:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:26:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:26:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:16,102 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:26:16,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:26:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:16,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:16,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:16,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:26:16,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:26:16,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 16:26:16,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:26:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:26:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 16:26:16,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:26:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:16,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:16,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:26:16,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:26:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 16:26:16,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:26:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 16:26:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:26:16,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 16:26:17,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022535752] [2020-10-27 16:26:17,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:26:17,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:26:17,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013561341] [2020-10-27 16:26:17,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:26:17,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:26:17,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:26:17,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:26:17,313 INFO L87 Difference]: Start difference. First operand 11000 states and 15183 transitions. Second operand 7 states. [2020-10-27 16:26:17,631 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 16:26:19,200 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 167