/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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:26:04,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:26:04,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:26:04,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:26:04,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:26:04,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:26:04,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:26:04,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:26:04,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:26:04,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:26:04,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:26:04,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:26:04,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:26:04,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:26:04,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:26:04,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:26:04,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:26:04,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:26:04,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:26:04,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:26:04,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:26:04,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:26:04,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:26:04,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:26:04,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:26:04,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:26:04,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:26:04,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:26:04,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:26:04,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:26:04,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:26:04,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:26:04,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:26:04,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:26:04,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:26:04,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:26:04,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:26:04,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:26:04,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:26:04,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:26:04,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:26:04,718 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 16:26:04,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:26:04,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:26:04,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:26:04,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:26:04,772 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:26:04,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:26:04,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:26:04,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:26:04,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:26:04,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:26:04,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:26:04,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:26:04,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:26:04,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:26:04,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:26:04,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:26:04,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:26:04,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:26:04,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:26:04,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:26:04,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:26:04,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:26:04,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:26:04,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:26:04,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:26:04,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:26:04,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:26:04,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:26:04,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:26:04,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:26:05,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:26:05,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:26:05,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:26:05,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:26:05,248 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:26:05,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label11.c [2020-10-27 16:26:05,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d28d9207/f398be2b58754563a3d60566d3bc6250/FLAG8239397aa [2020-10-27 16:26:06,465 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:26:06,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label11.c [2020-10-27 16:26:06,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d28d9207/f398be2b58754563a3d60566d3bc6250/FLAG8239397aa [2020-10-27 16:26:06,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d28d9207/f398be2b58754563a3d60566d3bc6250 [2020-10-27 16:26:06,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:26:06,762 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:26:06,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:26:06,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:26:06,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:26:06,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:26:06" (1/1) ... [2020-10-27 16:26:06,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7709b6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:06, skipping insertion in model container [2020-10-27 16:26:06,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:26:06" (1/1) ... [2020-10-27 16:26:06,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:26:06,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:26:09,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:26:09,402 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:26:10,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:26:10,611 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:26:10,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:10 WrapperNode [2020-10-27 16:26:10,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:26:10,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:26:10,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:26:10,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:26:10,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:10" (1/1) ... [2020-10-27 16:26:10,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:10" (1/1) ... [2020-10-27 16:26:10,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:10" (1/1) ... [2020-10-27 16:26:10,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:10" (1/1) ... [2020-10-27 16:26:11,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:10" (1/1) ... [2020-10-27 16:26:11,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:10" (1/1) ... [2020-10-27 16:26:11,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:10" (1/1) ... [2020-10-27 16:26:11,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:26:11,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:26:11,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:26:11,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:26:11,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:10" (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 16:26:11,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:26:11,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:26:11,393 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:26:11,393 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:26:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:26:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:26:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:26:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:26:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:26:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:26:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:26:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:26:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:26:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:26:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:26:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:26:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:26:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:26:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:26:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:26:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:26:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:26:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:26:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:26:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:26:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:26:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:26:19,984 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:26:19,984 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:26:19,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:26:19 BoogieIcfgContainer [2020-10-27 16:26:19,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:26:19,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:26:19,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:26:19,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:26:19,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:26:06" (1/3) ... [2020-10-27 16:26:19,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57571964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:26:19, skipping insertion in model container [2020-10-27 16:26:19,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:10" (2/3) ... [2020-10-27 16:26:19,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57571964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:26:19, skipping insertion in model container [2020-10-27 16:26:20,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:26:19" (3/3) ... [2020-10-27 16:26:20,001 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label11.c [2020-10-27 16:26:20,016 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:26:20,023 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:26:20,039 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:26:20,096 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:26:20,096 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:26:20,096 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:26:20,096 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:26:20,096 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:26:20,097 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:26:20,097 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:26:20,097 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:26:20,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:26:20,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2020-10-27 16:26:20,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:26:20,248 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] [2020-10-27 16:26:20,249 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:26:20,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:26:20,259 INFO L82 PathProgramCache]: Analyzing trace with hash -16721228, now seen corresponding path program 1 times [2020-10-27 16:26:20,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:26:20,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421144787] [2020-10-27 16:26:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:26:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:21,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:26,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:26,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 965 [2020-10-27 16:26:26,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:26:26,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5270 [2020-10-27 16:26:26,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 16:26:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:26:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-27 16:26:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 16:26:31,808 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-27 16:26:32,074 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-27 16:26:32,327 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-27 16:26:32,690 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-27 16:26:32,989 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-27 16:26:33,231 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-27 16:26:33,517 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-27 16:26:33,813 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-10-27 16:26:34,049 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-27 16:26:34,295 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2020-10-27 16:26:34,529 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2020-10-27 16:26:34,747 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2020-10-27 16:26:35,033 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-27 16:26:35,466 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:26:35,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:26:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:35,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:35,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:26:35,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:26:35,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 16:26:35,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:35,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:26:35,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:26:35,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:26:35,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:48,820 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 16:26:48,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421144787] [2020-10-27 16:26:48,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:26:48,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 16:26:48,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681665942] [2020-10-27 16:26:48,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 16:26:48,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:26:48,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 16:26:48,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-27 16:26:48,876 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-27 16:26:49,476 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 16:26:50,516 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2020-10-27 16:26:51,573 WARN L193 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2020-10-27 16:26:52,704 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-27 16:26:57,668 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2020-10-27 16:27:01,644 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 212 DAG size of output: 203 [2020-10-27 16:27:04,835 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 194 [2020-10-27 16:27:05,970 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 210 DAG size of output: 208 [2020-10-27 16:27:07,336 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 205 [2020-10-27 16:27:18,339 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 197 [2020-10-27 16:27:19,415 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 210 DAG size of output: 208 [2020-10-27 16:27:23,473 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2020-10-27 16:27:32,455 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 193 [2020-10-27 16:27:33,616 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 216 DAG size of output: 202 [2020-10-27 16:27:36,764 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 197 [2020-10-27 16:27:50,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:27:50,481 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-27 16:27:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:27:50,485 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 947 [2020-10-27 16:27:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:27:50,543 INFO L225 Difference]: With dead ends: 3401 [2020-10-27 16:27:50,544 INFO L226 Difference]: Without dead ends: 2020 [2020-10-27 16:27:50,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 16:27:50,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-27 16:27:50,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-27 16:27:50,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-27 16:27:50,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-27 16:27:50,727 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 947 [2020-10-27 16:27:50,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:27:50,729 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-27 16:27:50,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 16:27:50,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-27 16:27:50,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2020-10-27 16:27:50,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:27:50,779 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] [2020-10-27 16:27:50,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:27:50,780 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:27:50,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:27:50,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1731744843, now seen corresponding path program 1 times [2020-10-27 16:27:50,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:27:50,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636908976] [2020-10-27 16:27:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:27:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:53,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:55,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:55,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1037 [2020-10-27 16:27:55,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:27:55,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 16:27:55,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:27:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:27:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 953 [2020-10-27 16:27:55,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:56,963 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:27:56,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:27:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:56,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:56,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:56,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:27:56,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:56,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 16:27:56,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:27:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:27:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:27:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:57,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:27:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:57,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:57,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:57,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:27:57,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 16:27:57,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:27:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:27:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:27:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:58,415 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 16:27:58,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636908976] [2020-10-27 16:27:58,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:27:58,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:27:58,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995685679] [2020-10-27 16:27:58,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:27:58,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:27:58,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:27:58,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:27:58,421 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 5 states. [2020-10-27 16:27:58,994 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:28:17,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:28:17,833 INFO L93 Difference]: Finished difference Result 4399 states and 7437 transitions. [2020-10-27 16:28:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:28:17,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1017 [2020-10-27 16:28:17,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:28:17,856 INFO L225 Difference]: With dead ends: 4399 [2020-10-27 16:28:17,856 INFO L226 Difference]: Without dead ends: 3139 [2020-10-27 16:28:17,861 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 16:28:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-10-27 16:28:17,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3088. [2020-10-27 16:28:17,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3088 states. [2020-10-27 16:28:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 4567 transitions. [2020-10-27 16:28:18,021 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 4567 transitions. Word has length 1017 [2020-10-27 16:28:18,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:28:18,024 INFO L481 AbstractCegarLoop]: Abstraction has 3088 states and 4567 transitions. [2020-10-27 16:28:18,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:28:18,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 4567 transitions. [2020-10-27 16:28:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2020-10-27 16:28:18,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:28:18,052 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] [2020-10-27 16:28:18,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:28:18,053 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:28:18,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:28:18,055 INFO L82 PathProgramCache]: Analyzing trace with hash -991610333, now seen corresponding path program 1 times [2020-10-27 16:28:18,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:28:18,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254511377] [2020-10-27 16:28:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:28:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:18,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:18,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:23,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:23,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1048 [2020-10-27 16:28:23,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:28:23,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 16:28:23,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:28:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:28:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 16:28:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:23,988 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:28:23,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:28:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:23,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:24,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:24,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:28:24,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:28:24,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:28:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:28:24,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:24,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:28:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:24,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:24,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:24,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:28:24,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:24,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 16:28:24,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:28:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:28:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:24,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:28:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:24,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:24,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:24,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:28:24,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:24,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 16:28:24,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:28:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:28:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:28:24,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:25,271 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 16:28:25,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254511377] [2020-10-27 16:28:25,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:28:25,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:28:25,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168019809] [2020-10-27 16:28:25,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:28:25,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:28:25,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:28:25,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:28:25,275 INFO L87 Difference]: Start difference. First operand 3088 states and 4567 transitions. Second operand 7 states. [2020-10-27 16:28:25,953 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:28:27,053 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:28:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:28:50,223 INFO L93 Difference]: Finished difference Result 7700 states and 12255 transitions. [2020-10-27 16:28:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:28:50,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1026 [2020-10-27 16:28:50,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:28:50,258 INFO L225 Difference]: With dead ends: 7700 [2020-10-27 16:28:50,258 INFO L226 Difference]: Without dead ends: 5372 [2020-10-27 16:28:50,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:28:50,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2020-10-27 16:28:50,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 5295. [2020-10-27 16:28:50,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5295 states. [2020-10-27 16:28:50,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 7403 transitions. [2020-10-27 16:28:50,443 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 7403 transitions. Word has length 1026 [2020-10-27 16:28:50,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:28:50,443 INFO L481 AbstractCegarLoop]: Abstraction has 5295 states and 7403 transitions. [2020-10-27 16:28:50,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:28:50,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 7403 transitions. [2020-10-27 16:28:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-27 16:28:50,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:28:50,467 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] [2020-10-27 16:28:50,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:28:50,468 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:28:50,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:28:50,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1076972779, now seen corresponding path program 1 times [2020-10-27 16:28:50,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:28:50,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075367556] [2020-10-27 16:28:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:28:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:55,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:55,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1052 [2020-10-27 16:28:55,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:28:55,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-27 16:28:55,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:28:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:28:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 16:28:55,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:56,566 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:28:56,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:28:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:56,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:56,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:56,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:28:56,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:28:56,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:28:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:28:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:28:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:56,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:56,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:56,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:28:56,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 16:28:56,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:28:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:28:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:56,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:28:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:56,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:56,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:28:56,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:56,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 16:28:56,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:28:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:28:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 16:28:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:57,941 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 16:28:57,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075367556] [2020-10-27 16:28:57,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:28:57,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:28:57,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871289494] [2020-10-27 16:28:57,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:28:57,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:28:57,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:28:57,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:28:57,945 INFO L87 Difference]: Start difference. First operand 5295 states and 7403 transitions. Second operand 7 states. [2020-10-27 16:28:58,632 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 16:29:00,022 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 16:29:21,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:29:21,730 INFO L93 Difference]: Finished difference Result 12300 states and 17496 transitions. [2020-10-27 16:29:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:29:21,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1030 [2020-10-27 16:29:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:29:21,773 INFO L225 Difference]: With dead ends: 12300 [2020-10-27 16:29:21,773 INFO L226 Difference]: Without dead ends: 7765 [2020-10-27 16:29:21,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:29:21,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7765 states. [2020-10-27 16:29:22,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7765 to 7615. [2020-10-27 16:29:22,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7615 states. [2020-10-27 16:29:22,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7615 states to 7615 states and 10225 transitions. [2020-10-27 16:29:22,035 INFO L78 Accepts]: Start accepts. Automaton has 7615 states and 10225 transitions. Word has length 1030 [2020-10-27 16:29:22,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:29:22,035 INFO L481 AbstractCegarLoop]: Abstraction has 7615 states and 10225 transitions. [2020-10-27 16:29:22,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:29:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 7615 states and 10225 transitions. [2020-10-27 16:29:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1034 [2020-10-27 16:29:22,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:29:22,075 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] [2020-10-27 16:29:22,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:29:22,075 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:29:22,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:29:22,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1806559814, now seen corresponding path program 1 times [2020-10-27 16:29:22,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:29:22,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821095177] [2020-10-27 16:29:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:29:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:22,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:22,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:24,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:27,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:27,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1055 [2020-10-27 16:29:27,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:29:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5171 [2020-10-27 16:29:27,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:29:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 16:29:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 954 [2020-10-27 16:29:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:28,426 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:29:28,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:29:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:28,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:28,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:28,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:29:28,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:28,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:29:28,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:29:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:29:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:29:28,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:28,561 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:29:28,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:29:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:28,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:28,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:28,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:29:28,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 16:29:28,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:29:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:29:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:29:28,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:29:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:28,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:28,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:29:28,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:28,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 16:29:28,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:29:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:29:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:29:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 16:29:29,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821095177] [2020-10-27 16:29:29,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:29:29,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:29:29,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831133760] [2020-10-27 16:29:29,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:29:29,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:29:29,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:29:29,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:29:29,630 INFO L87 Difference]: Start difference. First operand 7615 states and 10225 transitions. Second operand 5 states. [2020-10-27 16:29:30,369 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 159