/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:18:14,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:18:14,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:18:14,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:18:14,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:18:14,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:18:14,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:18:14,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:18:14,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:18:14,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:18:14,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:18:14,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:18:14,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:18:14,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:18:14,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:18:14,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:18:14,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:18:14,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:18:14,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:18:14,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:18:14,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:18:14,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:18:14,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:18:14,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:18:14,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:18:14,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:18:14,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:18:14,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:18:14,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:18:14,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:18:14,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:18:14,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:18:14,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:18:14,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:18:14,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:18:14,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:18:14,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:18:14,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:18:14,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:18:14,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:18:14,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:18:14,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:18:14,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:18:14,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:18:14,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:18:14,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:18:14,821 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:18:14,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:18:14,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:18:14,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:18:14,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:18:14,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:18:14,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:18:14,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:18:14,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:18:14,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:18:14,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:18:14,825 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:18:14,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:18:14,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:18:14,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:18:14,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:18:14,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:18:14,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:18:14,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:18:14,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:18:14,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:18:14,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:18:14,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:18:14,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:18:14,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:18:14,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:18:15,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:18:15,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:18:15,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:18:15,341 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:18:15,342 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:18:15,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2020-10-28 12:18:15,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b75e25527/0af50fc6cb2049d5a01a7ad32e3384a1/FLAG59efad62c [2020-10-28 12:18:16,578 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:18:16,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2020-10-28 12:18:16,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b75e25527/0af50fc6cb2049d5a01a7ad32e3384a1/FLAG59efad62c [2020-10-28 12:18:16,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b75e25527/0af50fc6cb2049d5a01a7ad32e3384a1 [2020-10-28 12:18:16,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:18:16,970 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:18:16,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:18:16,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:18:16,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:18:16,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:18:16" (1/1) ... [2020-10-28 12:18:16,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a747ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:16, skipping insertion in model container [2020-10-28 12:18:16,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:18:16" (1/1) ... [2020-10-28 12:18:16,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:18:17,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:18:18,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:18:18,760 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:18:19,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:18:19,590 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:18:19,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:19 WrapperNode [2020-10-28 12:18:19,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:18:19,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:18:19,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:18:19,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:18:19,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:19" (1/1) ... [2020-10-28 12:18:19,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:19" (1/1) ... [2020-10-28 12:18:19,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:19" (1/1) ... [2020-10-28 12:18:19,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:19" (1/1) ... [2020-10-28 12:18:19,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:19" (1/1) ... [2020-10-28 12:18:19,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:19" (1/1) ... [2020-10-28 12:18:19,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:19" (1/1) ... [2020-10-28 12:18:19,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:18:19,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:18:19,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:18:19,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:18:19,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:18:20,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:18:20,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:18:20,091 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:18:20,091 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:18:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:18:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:18:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:18:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:18:20,092 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:18:20,092 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:18:20,092 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:18:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:18:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:18:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:18:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:18:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:18:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:18:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:18:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:18:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:18:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:18:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:18:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:18:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:18:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:18:26,218 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:18:26,218 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:18:26,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:18:26 BoogieIcfgContainer [2020-10-28 12:18:26,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:18:26,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:18:26,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:18:26,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:18:26,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:18:16" (1/3) ... [2020-10-28 12:18:26,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff21ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:18:26, skipping insertion in model container [2020-10-28 12:18:26,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:19" (2/3) ... [2020-10-28 12:18:26,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff21ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:18:26, skipping insertion in model container [2020-10-28 12:18:26,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:18:26" (3/3) ... [2020-10-28 12:18:26,241 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label22.c [2020-10-28 12:18:26,259 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:18:26,266 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:18:26,282 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:18:26,332 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:18:26,333 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:18:26,333 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:18:26,333 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:18:26,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:18:26,334 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:18:26,334 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:18:26,334 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:18:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:18:26,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 12:18:26,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:26,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:26,387 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:26,394 INFO L82 PathProgramCache]: Analyzing trace with hash -603732724, now seen corresponding path program 1 times [2020-10-28 12:18:26,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:26,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202421455] [2020-10-28 12:18:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:26,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:27,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:27,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:18:27,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-28 12:18:27,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:27,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:18:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:18:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:18:27,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:18:27,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:27,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:27,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:27,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:27,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:27,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:18:27,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:27,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:18:27,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:18:27,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202421455] [2020-10-28 12:18:27,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:18:27,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:18:27,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069421771] [2020-10-28 12:18:27,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:18:27,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:27,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:18:27,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:18:27,686 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-28 12:18:40,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:40,518 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:18:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:18:40,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-28 12:18:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:40,551 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:18:40,552 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:18:40,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:18:40,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:18:40,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:18:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:18:40,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-28 12:18:40,738 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 71 [2020-10-28 12:18:40,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:40,740 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-28 12:18:40,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:18:40,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-28 12:18:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 12:18:40,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:40,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:40,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:18:40,756 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:40,758 INFO L82 PathProgramCache]: Analyzing trace with hash 860245997, now seen corresponding path program 1 times [2020-10-28 12:18:40,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:40,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941959157] [2020-10-28 12:18:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:41,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:41,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 12:18:41,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:18:41,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-10-28 12:18:41,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:41,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:41,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:41,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:18:41,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 12:18:41,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:18:42,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:42,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:42,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:42,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:42,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:18:42,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:42,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:42,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:18:42,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:42,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:42,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:18:42,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:42,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:18:42,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:42,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:18:42,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:18:42,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941959157] [2020-10-28 12:18:42,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:18:42,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:18:42,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880388743] [2020-10-28 12:18:42,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:18:42,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:42,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:18:42,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:18:42,433 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 5 states. [2020-10-28 12:18:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:55,167 INFO L93 Difference]: Finished difference Result 4673 states and 7650 transitions. [2020-10-28 12:18:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:18:55,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-28 12:18:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:55,193 INFO L225 Difference]: With dead ends: 4673 [2020-10-28 12:18:55,193 INFO L226 Difference]: Without dead ends: 3125 [2020-10-28 12:18:55,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:18:55,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-28 12:18:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3112. [2020-10-28 12:18:55,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2020-10-28 12:18:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4442 transitions. [2020-10-28 12:18:55,292 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4442 transitions. Word has length 146 [2020-10-28 12:18:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:55,293 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 4442 transitions. [2020-10-28 12:18:55,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:18:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4442 transitions. [2020-10-28 12:18:55,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 12:18:55,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:55,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:55,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:18:55,297 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:55,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:55,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1221924363, now seen corresponding path program 1 times [2020-10-28 12:18:55,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:55,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696774340] [2020-10-28 12:18:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:55,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:55,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:56,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:56,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:56,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 12:18:56,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:18:56,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1301 [2020-10-28 12:18:56,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:56,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:18:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:18:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:18:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:56,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:56,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:56,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:56,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:56,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:18:56,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:56,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:18:56,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:57,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:57,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:18:57,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:57,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 12:18:57,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:57,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:57,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:57,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:57,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:18:57,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:18:57,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696774340] [2020-10-28 12:18:57,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:18:57,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:18:57,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773705452] [2020-10-28 12:18:57,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:18:57,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:57,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:18:57,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:18:57,183 INFO L87 Difference]: Start difference. First operand 3112 states and 4442 transitions. Second operand 7 states. [2020-10-28 12:19:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:14,815 INFO L93 Difference]: Finished difference Result 9472 states and 13710 transitions. [2020-10-28 12:19:14,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:19:14,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-28 12:19:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:14,855 INFO L225 Difference]: With dead ends: 9472 [2020-10-28 12:19:14,855 INFO L226 Difference]: Without dead ends: 6366 [2020-10-28 12:19:14,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:19:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2020-10-28 12:19:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 6267. [2020-10-28 12:19:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6267 states. [2020-10-28 12:19:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6267 states to 6267 states and 8429 transitions. [2020-10-28 12:19:15,054 INFO L78 Accepts]: Start accepts. Automaton has 6267 states and 8429 transitions. Word has length 150 [2020-10-28 12:19:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:15,054 INFO L481 AbstractCegarLoop]: Abstraction has 6267 states and 8429 transitions. [2020-10-28 12:19:15,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:19:15,055 INFO L276 IsEmpty]: Start isEmpty. Operand 6267 states and 8429 transitions. [2020-10-28 12:19:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-28 12:19:15,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:15,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:15,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:19:15,059 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:15,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:15,060 INFO L82 PathProgramCache]: Analyzing trace with hash -385384647, now seen corresponding path program 1 times [2020-10-28 12:19:15,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:15,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775832219] [2020-10-28 12:19:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:15,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:15,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:16,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:16,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 12:19:16,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:19:16,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1416 [2020-10-28 12:19:16,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:16,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:19:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:19:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 12:19:16,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:16,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:16,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:16,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:16,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:16,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:16,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:19:16,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:16,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:16,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:19:16,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:16,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:17,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:17,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:19:17,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:17,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-28 12:19:17,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:17,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:17,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:17,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:19:17,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:19:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:19:17,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775832219] [2020-10-28 12:19:17,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:19:17,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:19:17,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125492593] [2020-10-28 12:19:17,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:19:17,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:17,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:19:17,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:19:17,271 INFO L87 Difference]: Start difference. First operand 6267 states and 8429 transitions. Second operand 7 states. [2020-10-28 12:19:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:35,142 INFO L93 Difference]: Finished difference Result 19186 states and 27240 transitions. [2020-10-28 12:19:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:19:35,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-28 12:19:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:35,230 INFO L225 Difference]: With dead ends: 19186 [2020-10-28 12:19:35,230 INFO L226 Difference]: Without dead ends: 12925 [2020-10-28 12:19:35,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:19:35,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12925 states. [2020-10-28 12:19:35,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12925 to 11154. [2020-10-28 12:19:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11154 states. [2020-10-28 12:19:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11154 states to 11154 states and 14078 transitions. [2020-10-28 12:19:35,689 INFO L78 Accepts]: Start accepts. Automaton has 11154 states and 14078 transitions. Word has length 184 [2020-10-28 12:19:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:35,691 INFO L481 AbstractCegarLoop]: Abstraction has 11154 states and 14078 transitions. [2020-10-28 12:19:35,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:19:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 11154 states and 14078 transitions. [2020-10-28 12:19:35,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-28 12:19:35,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:35,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:35,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:19:35,698 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:35,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:35,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1072838069, now seen corresponding path program 1 times [2020-10-28 12:19:35,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:35,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990589478] [2020-10-28 12:19:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:38,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:38,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-28 12:19:38,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:19:38,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2238 [2020-10-28 12:19:38,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:38,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:19:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:19:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:19:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:38,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:38,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:38,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:38,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:38,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:38,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:19:38,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:38,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:38,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:38,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:38,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:19:38,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:38,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:38,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:38,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:19:38,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:38,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-28 12:19:38,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:38,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:19:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:19:38,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990589478] [2020-10-28 12:19:38,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:19:38,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:19:38,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777298794] [2020-10-28 12:19:38,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:19:38,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:38,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:19:38,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:19:38,923 INFO L87 Difference]: Start difference. First operand 11154 states and 14078 transitions. Second operand 7 states. [2020-10-28 12:19:41,741 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 12:19:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:55,460 INFO L93 Difference]: Finished difference Result 26002 states and 32588 transitions. [2020-10-28 12:19:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:19:55,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-10-28 12:19:55,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:55,545 INFO L225 Difference]: With dead ends: 26002 [2020-10-28 12:19:55,545 INFO L226 Difference]: Without dead ends: 14854 [2020-10-28 12:19:55,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:19:55,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14854 states. [2020-10-28 12:19:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14854 to 14640. [2020-10-28 12:19:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14640 states. [2020-10-28 12:19:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14640 states to 14640 states and 18058 transitions. [2020-10-28 12:19:56,084 INFO L78 Accepts]: Start accepts. Automaton has 14640 states and 18058 transitions. Word has length 219 [2020-10-28 12:19:56,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:56,085 INFO L481 AbstractCegarLoop]: Abstraction has 14640 states and 18058 transitions. [2020-10-28 12:19:56,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:19:56,085 INFO L276 IsEmpty]: Start isEmpty. Operand 14640 states and 18058 transitions. [2020-10-28 12:19:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-28 12:19:56,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:56,092 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:19:56,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:19:56,093 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:56,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:56,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2022948472, now seen corresponding path program 1 times [2020-10-28 12:19:56,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:56,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799699640] [2020-10-28 12:19:56,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:56,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:56,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:56,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:57,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:57,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-28 12:19:57,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:19:57,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1403 [2020-10-28 12:19:57,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:57,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:57,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:19:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:19:57,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:57,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:57,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:57,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:57,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:57,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:19:57,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:57,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:57,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:57,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:57,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:57,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:57,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:57,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:19:57,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:57,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 12:19:57,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:57,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:57,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:19:57,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:58,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:19:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:58,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:58,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:58,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:19:58,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 12:19:58,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:58,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:19:58,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:19:58,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799699640] [2020-10-28 12:19:58,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:58,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:19:58,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277701726] [2020-10-28 12:19:58,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:19:58,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:58,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:19:58,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:19:58,446 INFO L87 Difference]: Start difference. First operand 14640 states and 18058 transitions. Second operand 7 states. [2020-10-28 12:20:18,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:18,891 INFO L93 Difference]: Finished difference Result 35817 states and 46113 transitions. [2020-10-28 12:20:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:20:18,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-28 12:20:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:18,964 INFO L225 Difference]: With dead ends: 35817 [2020-10-28 12:20:18,965 INFO L226 Difference]: Without dead ends: 19575 [2020-10-28 12:20:19,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:20:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19575 states. [2020-10-28 12:20:19,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19575 to 19368. [2020-10-28 12:20:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19368 states. [2020-10-28 12:20:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19368 states to 19368 states and 22968 transitions. [2020-10-28 12:20:19,682 INFO L78 Accepts]: Start accepts. Automaton has 19368 states and 22968 transitions. Word has length 259 [2020-10-28 12:20:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:19,682 INFO L481 AbstractCegarLoop]: Abstraction has 19368 states and 22968 transitions. [2020-10-28 12:20:19,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:20:19,682 INFO L276 IsEmpty]: Start isEmpty. Operand 19368 states and 22968 transitions. [2020-10-28 12:20:19,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-28 12:20:19,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:19,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:19,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:20:19,690 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:19,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:19,691 INFO L82 PathProgramCache]: Analyzing trace with hash -604445380, now seen corresponding path program 1 times [2020-10-28 12:20:19,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:19,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864137369] [2020-10-28 12:20:19,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:19,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:20,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:22,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:22,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-28 12:20:22,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:20:22,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2319 [2020-10-28 12:20:22,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:22,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:22,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:20:22,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:20:22,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 12:20:22,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:22,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:22,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:22,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:22,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:22,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:22,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:20:22,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:22,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:22,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:22,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:22,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:22,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:22,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:22,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:22,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:22,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:20:22,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 12:20:22,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:22,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:20:22,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:22,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:20:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:22,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:22,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:22,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:20:22,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:22,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 12:20:22,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:22,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:20:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:20:22,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 147 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:20:23,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864137369] [2020-10-28 12:20:23,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:23,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:20:23,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25002171] [2020-10-28 12:20:23,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:20:23,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:23,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:20:23,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:20:23,086 INFO L87 Difference]: Start difference. First operand 19368 states and 22968 transitions. Second operand 6 states. [2020-10-28 12:20:43,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:43,250 INFO L93 Difference]: Finished difference Result 46238 states and 56980 transitions. [2020-10-28 12:20:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:20:43,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 305 [2020-10-28 12:20:43,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:43,357 INFO L225 Difference]: With dead ends: 46238 [2020-10-28 12:20:43,358 INFO L226 Difference]: Without dead ends: 26863 [2020-10-28 12:20:43,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:20:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26863 states. [2020-10-28 12:20:44,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26863 to 26694. [2020-10-28 12:20:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26694 states. [2020-10-28 12:20:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26694 states to 26694 states and 32514 transitions. [2020-10-28 12:20:44,313 INFO L78 Accepts]: Start accepts. Automaton has 26694 states and 32514 transitions. Word has length 305 [2020-10-28 12:20:44,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:44,314 INFO L481 AbstractCegarLoop]: Abstraction has 26694 states and 32514 transitions. [2020-10-28 12:20:44,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:20:44,314 INFO L276 IsEmpty]: Start isEmpty. Operand 26694 states and 32514 transitions. [2020-10-28 12:20:44,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-28 12:20:44,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:44,321 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:44,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:20:44,321 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:44,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:44,322 INFO L82 PathProgramCache]: Analyzing trace with hash -729119692, now seen corresponding path program 1 times [2020-10-28 12:20:44,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:44,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023984502] [2020-10-28 12:20:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:44,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:44,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:45,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:46,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:46,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-28 12:20:46,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:20:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2430 [2020-10-28 12:20:46,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:46,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:46,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:20:46,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:20:46,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 12:20:46,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:47,037 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:20:47,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:47,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:47,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:47,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:47,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:20:47,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:47,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:47,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:47,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:47,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:47,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:47,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:47,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:47,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:20:47,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:47,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 12:20:47,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:47,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:47,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:47,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:47,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:20:47,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:47,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:20:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:47,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:47,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:47,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:47,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:20:47,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:20:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:20:47,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:47,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:47,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:20:47,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 12:20:47,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023984502] [2020-10-28 12:20:47,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:47,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:20:47,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378421457] [2020-10-28 12:20:47,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:20:47,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:47,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:20:47,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:20:47,635 INFO L87 Difference]: Start difference. First operand 26694 states and 32514 transitions. Second operand 5 states. [2020-10-28 12:20:48,812 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:21:06,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:06,997 INFO L93 Difference]: Finished difference Result 72304 states and 91569 transitions. [2020-10-28 12:21:07,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:21:07,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-28 12:21:07,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:07,155 INFO L225 Difference]: With dead ends: 72304 [2020-10-28 12:21:07,156 INFO L226 Difference]: Without dead ends: 45595 [2020-10-28 12:21:07,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:21:07,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45595 states. [2020-10-28 12:21:08,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45595 to 44789. [2020-10-28 12:21:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44789 states. [2020-10-28 12:21:08,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44789 states to 44789 states and 55981 transitions. [2020-10-28 12:21:08,452 INFO L78 Accepts]: Start accepts. Automaton has 44789 states and 55981 transitions. Word has length 309 [2020-10-28 12:21:08,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:08,453 INFO L481 AbstractCegarLoop]: Abstraction has 44789 states and 55981 transitions. [2020-10-28 12:21:08,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:21:08,454 INFO L276 IsEmpty]: Start isEmpty. Operand 44789 states and 55981 transitions. [2020-10-28 12:21:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-28 12:21:08,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:08,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:08,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:21:08,462 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:08,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1915879414, now seen corresponding path program 1 times [2020-10-28 12:21:08,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:08,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309442484] [2020-10-28 12:21:08,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:08,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:11,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:11,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-28 12:21:11,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:21:11,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2698 [2020-10-28 12:21:11,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:11,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:21:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 12:21:11,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:11,417 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:21:11,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:11,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:11,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:11,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:11,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:21:11,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:11,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:11,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:11,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:11,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:11,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:11,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:21:11,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:11,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 12:21:11,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:11,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:11,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:11,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:11,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:21:11,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:11,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:21:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:11,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:11,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:11,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:21:11,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:11,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 12:21:11,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:11,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:11,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:11,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:11,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:21:11,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:21:12,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309442484] [2020-10-28 12:21:12,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:21:12,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:21:12,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076374214] [2020-10-28 12:21:12,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:12,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:12,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:12,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:12,138 INFO L87 Difference]: Start difference. First operand 44789 states and 55981 transitions. Second operand 7 states. [2020-10-28 12:21:19,108 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:21:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:39,289 INFO L93 Difference]: Finished difference Result 103605 states and 133604 transitions. [2020-10-28 12:21:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:21:39,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-28 12:21:39,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:39,524 INFO L225 Difference]: With dead ends: 103605 [2020-10-28 12:21:39,524 INFO L226 Difference]: Without dead ends: 59589 [2020-10-28 12:21:39,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:21:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59589 states. [2020-10-28 12:21:41,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59589 to 57880. [2020-10-28 12:21:41,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57880 states. [2020-10-28 12:21:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57880 states to 57880 states and 72594 transitions. [2020-10-28 12:21:42,272 INFO L78 Accepts]: Start accepts. Automaton has 57880 states and 72594 transitions. Word has length 310 [2020-10-28 12:21:42,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:42,273 INFO L481 AbstractCegarLoop]: Abstraction has 57880 states and 72594 transitions. [2020-10-28 12:21:42,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:21:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 57880 states and 72594 transitions. [2020-10-28 12:21:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-28 12:21:42,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:42,282 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:42,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:21:42,283 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:42,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:42,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1502472308, now seen corresponding path program 1 times [2020-10-28 12:21:42,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:42,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264947325] [2020-10-28 12:21:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:43,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:43,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-28 12:21:43,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-28 12:21:43,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:43,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-28 12:21:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 12:21:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:43,512 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:21:43,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:43,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:43,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:43,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:43,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:43,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:21:43,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:43,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:43,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:43,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:43,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:43,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:21:43,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:43,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 12:21:43,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:43,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:43,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:43,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:21:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:43,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:43,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:43,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:21:43,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:43,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 12:21:43,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:43,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:21:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 12:21:44,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264947325] [2020-10-28 12:21:44,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:21:44,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:21:44,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747140352] [2020-10-28 12:21:44,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:21:44,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:44,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:21:44,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:21:44,125 INFO L87 Difference]: Start difference. First operand 57880 states and 72594 transitions. Second operand 6 states. [2020-10-28 12:21:44,275 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:21:46,313 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 66