/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=SHALLOWEST --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/Problem01_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:35:01,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:35:01,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:35:01,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:35:01,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:35:01,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:35:01,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:35:01,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:35:01,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:35:01,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:35:01,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:35:01,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:35:01,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:35:01,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:35:01,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:35:01,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:35:01,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:35:01,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:35:01,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:35:01,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:35:01,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:35:01,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:35:01,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:35:01,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:35:01,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:35:01,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:35:01,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:35:01,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:35:01,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:35:01,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:35:01,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:35:01,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:35:01,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:35:01,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:35:01,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:35:01,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:35:01,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:35:01,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:35:01,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:35:01,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:35:01,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:35:01,252 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 [2020-10-26 20:35:01,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:35:01,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:35:01,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:35:01,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:35:01,304 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:35:01,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:35:01,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:35:01,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:35:01,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:35:01,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:35:01,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:35:01,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:35:01,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:35:01,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:35:01,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:35:01,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:35:01,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:35:01,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:35:01,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:35:01,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:35:01,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:35:01,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:35:01,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:35:01,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:35:01,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:35:01,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:35:01,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:35:01,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:35:01,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:35:01,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:35:01,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:35:01,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:35:01,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:35:01,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:35:01,743 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:35:01,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-10-26 20:35:01,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25490f060/1da24fec108e442e9f03c0721a7c5c19/FLAG54524b8be [2020-10-26 20:35:02,682 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:35:02,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-10-26 20:35:02,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25490f060/1da24fec108e442e9f03c0721a7c5c19/FLAG54524b8be [2020-10-26 20:35:02,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25490f060/1da24fec108e442e9f03c0721a7c5c19 [2020-10-26 20:35:02,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:35:02,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:35:02,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:35:02,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:35:02,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:35:02,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:35:02" (1/1) ... [2020-10-26 20:35:02,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c40ebb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:02, skipping insertion in model container [2020-10-26 20:35:02,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:35:02" (1/1) ... [2020-10-26 20:35:02,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:35:02,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:35:03,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:35:03,570 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:35:03,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:35:03,885 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:35:03,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:03 WrapperNode [2020-10-26 20:35:03,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:35:03,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:35:03,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:35:03,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:35:03,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:03" (1/1) ... [2020-10-26 20:35:03,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:03" (1/1) ... [2020-10-26 20:35:03,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:03" (1/1) ... [2020-10-26 20:35:03,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:03" (1/1) ... [2020-10-26 20:35:04,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:03" (1/1) ... [2020-10-26 20:35:04,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:03" (1/1) ... [2020-10-26 20:35:04,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:03" (1/1) ... [2020-10-26 20:35:04,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:35:04,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:35:04,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:35:04,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:35:04,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:03" (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 [2020-10-26 20:35:04,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:35:04,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:35:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:35:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:35:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:35:04,131 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:35:04,131 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:35:04,131 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:35:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:35:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:35:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:35:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:35:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:35:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:35:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:35:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:35:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:35:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:35:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:35:05,755 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:35:05,755 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:35:05,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:35:05 BoogieIcfgContainer [2020-10-26 20:35:05,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:35:05,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:35:05,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:35:05,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:35:05,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:35:02" (1/3) ... [2020-10-26 20:35:05,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298507ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:35:05, skipping insertion in model container [2020-10-26 20:35:05,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:03" (2/3) ... [2020-10-26 20:35:05,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298507ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:35:05, skipping insertion in model container [2020-10-26 20:35:05,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:35:05" (3/3) ... [2020-10-26 20:35:05,780 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-10-26 20:35:05,792 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:35:05,798 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:35:05,813 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:35:05,860 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:35:05,860 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:35:05,860 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:35:05,860 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:35:05,861 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:35:05,861 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:35:05,861 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:35:05,861 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:35:05,896 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-26 20:35:05,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-26 20:35:05,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:05,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:05,922 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:05,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:05,932 INFO L82 PathProgramCache]: Analyzing trace with hash -600745277, now seen corresponding path program 1 times [2020-10-26 20:35:05,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:05,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685572019] [2020-10-26 20:35:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:06,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:08,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:08,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 20:35:08,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:08,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2360 [2020-10-26 20:35:08,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 20:35:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-26 20:35:08,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:35:09,364 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-10-26 20:35:09,971 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:35:09,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:09,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:10,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:10,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:10,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:10,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 20:35:10,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:10,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:10,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:35:10,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685572019] [2020-10-26 20:35:10,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:35:10,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-26 20:35:10,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095781820] [2020-10-26 20:35:10,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 20:35:10,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:10,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 20:35:10,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:35:10,326 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 12 states. [2020-10-26 20:35:10,690 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-26 20:35:11,011 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-26 20:35:11,307 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-26 20:35:11,594 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-26 20:35:12,009 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 119 [2020-10-26 20:35:12,475 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 118 [2020-10-26 20:35:13,158 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2020-10-26 20:35:13,947 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 116 [2020-10-26 20:35:14,478 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 114 [2020-10-26 20:35:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:15,860 INFO L93 Difference]: Finished difference Result 479 states and 799 transitions. [2020-10-26 20:35:15,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:35:15,865 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-10-26 20:35:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:15,877 INFO L225 Difference]: With dead ends: 479 [2020-10-26 20:35:15,877 INFO L226 Difference]: Without dead ends: 206 [2020-10-26 20:35:15,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-26 20:35:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-26 20:35:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-10-26 20:35:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-26 20:35:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 278 transitions. [2020-10-26 20:35:15,993 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 278 transitions. Word has length 139 [2020-10-26 20:35:15,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:15,994 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 278 transitions. [2020-10-26 20:35:15,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 20:35:15,994 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 278 transitions. [2020-10-26 20:35:16,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-26 20:35:16,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:16,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:16,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:35:16,011 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:16,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:16,016 INFO L82 PathProgramCache]: Analyzing trace with hash 610136293, now seen corresponding path program 1 times [2020-10-26 20:35:16,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:16,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077976482] [2020-10-26 20:35:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:16,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:17,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:17,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-26 20:35:17,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:35:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1766 [2020-10-26 20:35:17,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:35:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-26 20:35:17,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:18,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:18,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:18,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:18,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:35:18,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:18,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:18,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:18,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:18,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:18,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:18,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:18,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:35:18,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:35:18,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:35:18,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077976482] [2020-10-26 20:35:18,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:18,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:35:18,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857063204] [2020-10-26 20:35:18,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:35:18,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:18,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:35:18,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:35:18,232 INFO L87 Difference]: Start difference. First operand 206 states and 278 transitions. Second operand 6 states. [2020-10-26 20:35:19,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:19,765 INFO L93 Difference]: Finished difference Result 485 states and 696 transitions. [2020-10-26 20:35:19,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:35:19,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-10-26 20:35:19,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:19,778 INFO L225 Difference]: With dead ends: 485 [2020-10-26 20:35:19,778 INFO L226 Difference]: Without dead ends: 345 [2020-10-26 20:35:19,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-26 20:35:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2020-10-26 20:35:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-26 20:35:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2020-10-26 20:35:19,838 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 147 [2020-10-26 20:35:19,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:19,840 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2020-10-26 20:35:19,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:35:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2020-10-26 20:35:19,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-26 20:35:19,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:19,846 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:19,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:35:19,847 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:19,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:19,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1836287456, now seen corresponding path program 1 times [2020-10-26 20:35:19,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:19,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182244455] [2020-10-26 20:35:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:19,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:24,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:24,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-26 20:35:24,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:35:24,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 20:35:24,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:24,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:35:24,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:24,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 20:35:24,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:35:25,074 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:35:25,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:25,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:25,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:25,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:25,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 20:35:25,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:25,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:25,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:25,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:25,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:25,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:25,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:35:25,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:25,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:35:25,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:25,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:35:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:25,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:25,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:35:25,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:25,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:35:25,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:35:25,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:35:25,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182244455] [2020-10-26 20:35:25,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:25,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:35:25,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122435875] [2020-10-26 20:35:25,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:35:25,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:25,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:35:25,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:25,256 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand 7 states. [2020-10-26 20:35:26,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:26,952 INFO L93 Difference]: Finished difference Result 913 states and 1290 transitions. [2020-10-26 20:35:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:35:26,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-10-26 20:35:26,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:26,959 INFO L225 Difference]: With dead ends: 913 [2020-10-26 20:35:26,959 INFO L226 Difference]: Without dead ends: 636 [2020-10-26 20:35:26,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:35:26,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-10-26 20:35:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 623. [2020-10-26 20:35:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2020-10-26 20:35:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 841 transitions. [2020-10-26 20:35:27,001 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 841 transitions. Word has length 156 [2020-10-26 20:35:27,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:27,002 INFO L481 AbstractCegarLoop]: Abstraction has 623 states and 841 transitions. [2020-10-26 20:35:27,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:35:27,002 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 841 transitions. [2020-10-26 20:35:27,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-26 20:35:27,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:27,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:27,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:35:27,006 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:27,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:27,007 INFO L82 PathProgramCache]: Analyzing trace with hash -733629121, now seen corresponding path program 1 times [2020-10-26 20:35:27,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:27,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369727646] [2020-10-26 20:35:27,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:27,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:27,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:32,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:32,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-26 20:35:32,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:35:32,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 20:35:32,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:32,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:35:32,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:32,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 20:35:32,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:35:32,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:32,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:35:32,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:32,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:32,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:32,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:35:32,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:32,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 20:35:32,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:35:32,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:32,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:35:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:32,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:32,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:32,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:35:32,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:32,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:35:32,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:35:32,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:35:32,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369727646] [2020-10-26 20:35:32,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:32,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:35:32,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760942658] [2020-10-26 20:35:32,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:35:32,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:32,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:35:32,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:35:32,362 INFO L87 Difference]: Start difference. First operand 623 states and 841 transitions. Second operand 8 states. [2020-10-26 20:35:34,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:34,184 INFO L93 Difference]: Finished difference Result 1486 states and 2099 transitions. [2020-10-26 20:35:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:35:34,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 159 [2020-10-26 20:35:34,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:34,197 INFO L225 Difference]: With dead ends: 1486 [2020-10-26 20:35:34,197 INFO L226 Difference]: Without dead ends: 929 [2020-10-26 20:35:34,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:35:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2020-10-26 20:35:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 901. [2020-10-26 20:35:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-10-26 20:35:34,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1213 transitions. [2020-10-26 20:35:34,248 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1213 transitions. Word has length 159 [2020-10-26 20:35:34,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:34,249 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1213 transitions. [2020-10-26 20:35:34,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:35:34,249 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1213 transitions. [2020-10-26 20:35:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-26 20:35:34,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:34,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:34,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:35:34,254 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:34,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:34,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1748547416, now seen corresponding path program 1 times [2020-10-26 20:35:34,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:34,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498270141] [2020-10-26 20:35:34,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:34,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:34,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:35,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:38,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:39,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:39,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 20:35:39,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:35:39,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 20:35:39,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 20:35:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 20:35:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:39,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:39,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:39,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:35:39,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:39,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:39,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:39,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:39,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:39,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:35:39,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:35:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:35:39,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:35:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:39,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:39,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:39,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:35:39,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:39,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 20:35:39,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:39,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:39,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:39,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:35:39,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:35:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 20:35:39,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498270141] [2020-10-26 20:35:39,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:39,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:35:39,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380874083] [2020-10-26 20:35:39,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:35:39,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:39,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:35:39,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:39,743 INFO L87 Difference]: Start difference. First operand 901 states and 1213 transitions. Second operand 7 states. [2020-10-26 20:35:41,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:41,760 INFO L93 Difference]: Finished difference Result 1885 states and 2594 transitions. [2020-10-26 20:35:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:35:41,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-26 20:35:41,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:41,777 INFO L225 Difference]: With dead ends: 1885 [2020-10-26 20:35:41,778 INFO L226 Difference]: Without dead ends: 1882 [2020-10-26 20:35:41,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:35:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2020-10-26 20:35:41,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1729. [2020-10-26 20:35:41,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1729 states. [2020-10-26 20:35:41,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2362 transitions. [2020-10-26 20:35:41,858 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2362 transitions. Word has length 160 [2020-10-26 20:35:41,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:41,859 INFO L481 AbstractCegarLoop]: Abstraction has 1729 states and 2362 transitions. [2020-10-26 20:35:41,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:35:41,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2362 transitions. [2020-10-26 20:35:41,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-26 20:35:41,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:41,866 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:41,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:35:41,866 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:41,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:41,867 INFO L82 PathProgramCache]: Analyzing trace with hash 995826325, now seen corresponding path program 1 times [2020-10-26 20:35:41,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:41,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843670300] [2020-10-26 20:35:41,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:41,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:41,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:41,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:42,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:46,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:46,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 20:35:46,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:35:46,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 20:35:46,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:35:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-26 20:35:46,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:47,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:47,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:47,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:47,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:47,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:47,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:35:47,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:47,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:47,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:47,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:47,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:47,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:35:47,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:47,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:47,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:47,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:35:47,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:47,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:35:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:47,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:47,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:47,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:35:47,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:47,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:35:47,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:35:47,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:47,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-26 20:35:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:47,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:47,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:47,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 20:35:47,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:35:47,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 20:35:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 42 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 20:35:47,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843670300] [2020-10-26 20:35:47,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:47,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:35:47,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63218332] [2020-10-26 20:35:47,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:35:47,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:47,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:35:47,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:47,220 INFO L87 Difference]: Start difference. First operand 1729 states and 2362 transitions. Second operand 7 states. [2020-10-26 20:35:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:49,000 INFO L93 Difference]: Finished difference Result 3428 states and 4750 transitions. [2020-10-26 20:35:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:35:49,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-26 20:35:49,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:49,015 INFO L225 Difference]: With dead ends: 3428 [2020-10-26 20:35:49,016 INFO L226 Difference]: Without dead ends: 1765 [2020-10-26 20:35:49,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:35:49,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2020-10-26 20:35:49,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1469. [2020-10-26 20:35:49,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-10-26 20:35:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1954 transitions. [2020-10-26 20:35:49,099 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1954 transitions. Word has length 185 [2020-10-26 20:35:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:49,100 INFO L481 AbstractCegarLoop]: Abstraction has 1469 states and 1954 transitions. [2020-10-26 20:35:49,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:35:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1954 transitions. [2020-10-26 20:35:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-26 20:35:49,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:49,106 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:49,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:35:49,107 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:49,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:49,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1204258840, now seen corresponding path program 1 times [2020-10-26 20:35:49,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:49,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383324788] [2020-10-26 20:35:49,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:49,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:49,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:49,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:50,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:54,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:54,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 20:35:54,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:35:54,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 20:35:54,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:35:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:35:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:35:54,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:54,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:54,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:54,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:54,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:35:54,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:54,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:54,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:54,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:54,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:54,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:54,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:35:54,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:54,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:35:54,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:54,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:35:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:54,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:54,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:54,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:35:54,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 20:35:54,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:35:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:54,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:35:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:54,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:54,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:54,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:35:54,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:54,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 20:35:54,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:35:54,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:54,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 20:35:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:54,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:54,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:54,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 20:35:54,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:54,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:35:54,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:54,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:54,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 20:35:54,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:54,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 65 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 20:35:54,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383324788] [2020-10-26 20:35:54,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:54,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:35:54,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312175852] [2020-10-26 20:35:54,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:35:54,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:54,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:35:54,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:35:54,542 INFO L87 Difference]: Start difference. First operand 1469 states and 1954 transitions. Second operand 8 states. [2020-10-26 20:35:56,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:56,440 INFO L93 Difference]: Finished difference Result 3474 states and 4685 transitions. [2020-10-26 20:35:56,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 20:35:56,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-10-26 20:35:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:56,454 INFO L225 Difference]: With dead ends: 3474 [2020-10-26 20:35:56,454 INFO L226 Difference]: Without dead ends: 2071 [2020-10-26 20:35:56,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:35:56,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2020-10-26 20:35:56,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2039. [2020-10-26 20:35:56,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2020-10-26 20:35:56,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2605 transitions. [2020-10-26 20:35:56,552 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2605 transitions. Word has length 198 [2020-10-26 20:35:56,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:56,552 INFO L481 AbstractCegarLoop]: Abstraction has 2039 states and 2605 transitions. [2020-10-26 20:35:56,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:35:56,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2605 transitions. [2020-10-26 20:35:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-26 20:35:56,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:56,560 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:56,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:35:56,560 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:56,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:56,561 INFO L82 PathProgramCache]: Analyzing trace with hash 515313847, now seen corresponding path program 1 times [2020-10-26 20:35:56,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:56,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965639837] [2020-10-26 20:35:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:56,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:56,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:57,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:57,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:01,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-26 20:36:01,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:36:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 20:36:01,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 20:36:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-26 20:36:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:01,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:01,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:01,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:01,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:01,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:36:01,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:01,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:01,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:01,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:01,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:36:01,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:01,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:36:01,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:36:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:01,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:36:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:01,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:01,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:36:01,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:01,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:36:01,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:01,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:01,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:01,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:36:01,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:01,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 20:36:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:01,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:01,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:36:01,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:01,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:36:01,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:36:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:01,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-26 20:36:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:01,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:02,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 20:36:02,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:02,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:36:02,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 20:36:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:02,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 64 proven. 36 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 20:36:02,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965639837] [2020-10-26 20:36:02,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:02,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:36:02,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358807909] [2020-10-26 20:36:02,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:36:02,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:02,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:36:02,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:36:02,063 INFO L87 Difference]: Start difference. First operand 2039 states and 2605 transitions. Second operand 9 states. [2020-10-26 20:36:04,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:04,019 INFO L93 Difference]: Finished difference Result 4483 states and 5930 transitions. [2020-10-26 20:36:04,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 20:36:04,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 201 [2020-10-26 20:36:04,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:04,033 INFO L225 Difference]: With dead ends: 4483 [2020-10-26 20:36:04,033 INFO L226 Difference]: Without dead ends: 2510 [2020-10-26 20:36:04,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 20:36:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2020-10-26 20:36:04,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2482. [2020-10-26 20:36:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2482 states. [2020-10-26 20:36:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3133 transitions. [2020-10-26 20:36:04,116 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3133 transitions. Word has length 201 [2020-10-26 20:36:04,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:04,116 INFO L481 AbstractCegarLoop]: Abstraction has 2482 states and 3133 transitions. [2020-10-26 20:36:04,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:36:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3133 transitions. [2020-10-26 20:36:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-26 20:36:04,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:04,125 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:04,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:36:04,126 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:04,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:04,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1325779743, now seen corresponding path program 1 times [2020-10-26 20:36:04,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:04,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982389046] [2020-10-26 20:36:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:04,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:04,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:04,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:09,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:09,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:09,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-26 20:36:09,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:36:09,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 20:36:09,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:36:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 20:36:09,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:09,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:09,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:09,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:09,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:09,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:09,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:36:09,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:09,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:09,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:09,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:09,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:09,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:36:09,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 20:36:09,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:36:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:09,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:36:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:09,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:09,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:09,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 20:36:09,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:09,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 20:36:09,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 20:36:09,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:09,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 20:36:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:09,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:09,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:36:09,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:09,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:36:09,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 20:36:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:09,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:09,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-26 20:36:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:09,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:09,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:09,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 20:36:09,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:36:09,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 20:36:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:09,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 79 proven. 42 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-26 20:36:09,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982389046] [2020-10-26 20:36:09,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:09,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:36:09,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142449613] [2020-10-26 20:36:09,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:09,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:09,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:09,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:09,782 INFO L87 Difference]: Start difference. First operand 2482 states and 3133 transitions. Second operand 7 states. [2020-10-26 20:36:09,917 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:36:10,569 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:36:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:11,755 INFO L93 Difference]: Finished difference Result 5051 states and 6430 transitions. [2020-10-26 20:36:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:36:11,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-26 20:36:11,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:11,773 INFO L225 Difference]: With dead ends: 5051 [2020-10-26 20:36:11,773 INFO L226 Difference]: Without dead ends: 2635 [2020-10-26 20:36:11,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:36:11,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2020-10-26 20:36:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2625. [2020-10-26 20:36:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2625 states. [2020-10-26 20:36:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2625 states to 2625 states and 3305 transitions. [2020-10-26 20:36:11,855 INFO L78 Accepts]: Start accepts. Automaton has 2625 states and 3305 transitions. Word has length 221 [2020-10-26 20:36:11,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:11,856 INFO L481 AbstractCegarLoop]: Abstraction has 2625 states and 3305 transitions. [2020-10-26 20:36:11,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:11,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2625 states and 3305 transitions. [2020-10-26 20:36:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-26 20:36:11,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:11,866 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:11,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:36:11,866 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:11,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:11,867 INFO L82 PathProgramCache]: Analyzing trace with hash -533640671, now seen corresponding path program 1 times [2020-10-26 20:36:11,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:11,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764900910] [2020-10-26 20:36:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:13,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:13,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-26 20:36:13,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:36:13,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1765 [2020-10-26 20:36:13,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:13,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:36:13,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:36:13,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 249 [2020-10-26 20:36:13,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:13,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:13,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:13,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:13,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:13,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:13,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:36:13,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:13,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:13,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:13,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:13,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:13,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:13,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:13,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:36:13,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:13,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:36:13,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:13,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:13,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:13,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:36:13,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:13,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:36:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:13,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:13,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:13,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 20:36:13,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:13,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 20:36:13,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:13,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:13,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:13,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:36:13,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:13,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 20:36:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:14,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:14,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 20:36:14,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:14,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 20:36:14,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:14,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:14,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-26 20:36:14,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 63 proven. 95 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 20:36:14,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764900910] [2020-10-26 20:36:14,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:14,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:36:14,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513244014] [2020-10-26 20:36:14,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:14,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:14,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:14,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:14,281 INFO L87 Difference]: Start difference. First operand 2625 states and 3305 transitions. Second operand 7 states. [2020-10-26 20:36:15,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:15,999 INFO L93 Difference]: Finished difference Result 5637 states and 7185 transitions. [2020-10-26 20:36:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:36:16,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-26 20:36:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:16,018 INFO L225 Difference]: With dead ends: 5637 [2020-10-26 20:36:16,018 INFO L226 Difference]: Without dead ends: 3078 [2020-10-26 20:36:16,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:36:16,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2020-10-26 20:36:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2778. [2020-10-26 20:36:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2778 states. [2020-10-26 20:36:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3392 transitions. [2020-10-26 20:36:16,118 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3392 transitions. Word has length 255 [2020-10-26 20:36:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:16,119 INFO L481 AbstractCegarLoop]: Abstraction has 2778 states and 3392 transitions. [2020-10-26 20:36:16,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3392 transitions. [2020-10-26 20:36:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-26 20:36:16,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:16,132 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:16,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:36:16,132 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:16,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:16,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1248864559, now seen corresponding path program 1 times [2020-10-26 20:36:16,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:16,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581002692] [2020-10-26 20:36:16,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:16,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:17,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:17,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:20,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:20,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 20:36:20,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:36:20,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4259 [2020-10-26 20:36:20,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:20,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:20,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-26 20:36:20,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:36:20,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:20,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:20,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:20,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:20,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:20,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:36:20,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:20,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:20,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:20,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:20,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:36:20,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:20,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:36:20,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:20,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:36:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:20,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:20,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 20:36:20,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:20,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:36:20,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:20,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:20,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:20,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 20:36:20,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:20,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 20:36:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:20,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:20,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:20,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:36:20,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:20,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:36:20,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:36:20,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:20,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-26 20:36:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:20,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:20,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:20,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 20:36:20,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:20,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:36:20,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-26 20:36:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 143 proven. 14 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 20:36:20,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581002692] [2020-10-26 20:36:20,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:20,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:36:20,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173098678] [2020-10-26 20:36:20,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:20,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:20,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:20,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:20,841 INFO L87 Difference]: Start difference. First operand 2778 states and 3392 transitions. Second operand 7 states. [2020-10-26 20:36:21,497 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:36:23,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:23,076 INFO L93 Difference]: Finished difference Result 6632 states and 8197 transitions. [2020-10-26 20:36:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:36:23,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-26 20:36:23,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:23,095 INFO L225 Difference]: With dead ends: 6632 [2020-10-26 20:36:23,095 INFO L226 Difference]: Without dead ends: 3779 [2020-10-26 20:36:23,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:36:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2020-10-26 20:36:23,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 3610. [2020-10-26 20:36:23,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3610 states. [2020-10-26 20:36:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 4254 transitions. [2020-10-26 20:36:23,201 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 4254 transitions. Word has length 257 [2020-10-26 20:36:23,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:23,202 INFO L481 AbstractCegarLoop]: Abstraction has 3610 states and 4254 transitions. [2020-10-26 20:36:23,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 4254 transitions. [2020-10-26 20:36:23,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-26 20:36:23,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:23,215 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:23,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:36:23,215 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:23,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:23,216 INFO L82 PathProgramCache]: Analyzing trace with hash -219998108, now seen corresponding path program 1 times [2020-10-26 20:36:23,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:23,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728487947] [2020-10-26 20:36:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:23,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:23,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:26,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:28,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:28,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-26 20:36:28,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:36:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 20:36:28,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-26 20:36:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:36:28,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:28,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:28,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:28,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:28,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:28,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:36:28,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:28,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:28,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:28,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:28,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:28,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:28,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:28,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:28,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:36:28,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:28,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:36:28,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:28,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:28,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:36:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:28,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:28,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 20:36:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:36:28,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:28,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 20:36:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:28,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:28,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-26 20:36:28,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:28,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:36:28,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:36:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:28,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 20:36:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:28,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:28,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:28,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:36:28,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:28,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:36:28,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:36:28,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:28,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-26 20:36:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:28,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:28,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:28,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:36:28,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:36:28,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 20:36:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:28,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 20:36:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:28,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:28,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:28,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 20:36:28,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:28,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:36:28,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:28,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:28,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-26 20:36:28,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:28,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 193 proven. 22 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-10-26 20:36:28,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728487947] [2020-10-26 20:36:28,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:28,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:36:28,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207162825] [2020-10-26 20:36:28,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:28,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:28,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:28,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:28,617 INFO L87 Difference]: Start difference. First operand 3610 states and 4254 transitions. Second operand 7 states. [2020-10-26 20:36:30,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:30,566 INFO L93 Difference]: Finished difference Result 8304 states and 10016 transitions. [2020-10-26 20:36:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:36:30,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-26 20:36:30,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:30,590 INFO L225 Difference]: With dead ends: 8304 [2020-10-26 20:36:30,590 INFO L226 Difference]: Without dead ends: 4760 [2020-10-26 20:36:30,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:36:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4760 states. [2020-10-26 20:36:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4760 to 4710. [2020-10-26 20:36:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4710 states. [2020-10-26 20:36:30,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 5577 transitions. [2020-10-26 20:36:30,729 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 5577 transitions. Word has length 286 [2020-10-26 20:36:30,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:30,729 INFO L481 AbstractCegarLoop]: Abstraction has 4710 states and 5577 transitions. [2020-10-26 20:36:30,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:30,730 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 5577 transitions. [2020-10-26 20:36:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-26 20:36:30,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:30,746 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:30,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:36:30,746 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:30,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:30,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1728632942, now seen corresponding path program 1 times [2020-10-26 20:36:30,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:30,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757848931] [2020-10-26 20:36:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:30,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:33,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:33,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:35,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:35,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-26 20:36:35,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:36:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 20:36:35,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-26 20:36:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 20:36:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:35,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:35,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:35,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:35,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:36:35,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:35,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:35,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:36,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:36,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:36:36,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:36,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 20:36:36,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:36,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:36,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:36,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 20:36:36,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:36,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:36:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:36,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:36,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:36,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:36:36,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 20:36:36,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 20:36:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:36,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 20:36:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:36,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:36,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:36,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:36:36,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:36,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:36:36,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:36:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:36,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:36,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-26 20:36:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:36,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:36,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:36:36,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:36:36,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 20:36:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:36,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:36,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-26 20:36:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:36,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:36,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 20:36:36,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:36,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:36:36,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-26 20:36:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:36,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 184 proven. 50 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-26 20:36:36,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757848931] [2020-10-26 20:36:36,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:36,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:36:36,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729116639] [2020-10-26 20:36:36,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:36:36,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:36,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:36:36,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:36:36,265 INFO L87 Difference]: Start difference. First operand 4710 states and 5577 transitions. Second operand 8 states. [2020-10-26 20:36:38,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:38,938 INFO L93 Difference]: Finished difference Result 9650 states and 11529 transitions. [2020-10-26 20:36:38,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 20:36:38,939 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-10-26 20:36:38,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:39,005 INFO L225 Difference]: With dead ends: 9650 [2020-10-26 20:36:39,005 INFO L226 Difference]: Without dead ends: 5006 [2020-10-26 20:36:39,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-26 20:36:39,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2020-10-26 20:36:39,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 4992. [2020-10-26 20:36:39,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4992 states. [2020-10-26 20:36:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 5834 transitions. [2020-10-26 20:36:39,153 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 5834 transitions. Word has length 288 [2020-10-26 20:36:39,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:39,153 INFO L481 AbstractCegarLoop]: Abstraction has 4992 states and 5834 transitions. [2020-10-26 20:36:39,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:36:39,154 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 5834 transitions. [2020-10-26 20:36:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-26 20:36:39,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:39,172 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:39,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 20:36:39,172 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:39,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:39,173 INFO L82 PathProgramCache]: Analyzing trace with hash 584373086, now seen corresponding path program 1 times [2020-10-26 20:36:39,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:39,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241243420] [2020-10-26 20:36:39,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:39,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:40,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:41,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:41,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-26 20:36:41,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:36:41,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1873 [2020-10-26 20:36:41,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:36:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-26 20:36:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 20:36:41,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:41,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:41,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:41,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:41,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:41,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:36:41,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:41,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:41,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:41,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:41,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:41,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:41,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:41,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:41,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:36:41,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:41,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:36:41,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:41,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:41,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-26 20:36:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:41,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:41,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:36:41,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:41,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:36:41,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:41,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 20:36:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:41,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:41,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:41,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:36:41,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:41,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:36:41,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:41,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:41,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 20:36:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:41,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:41,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:36:41,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:41,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:36:41,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:41,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:41,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:41,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:36:41,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-26 20:36:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:41,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:41,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:41,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 20:36:41,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:41,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 20:36:41,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 20:36:41,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:41,524 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 214 proven. 29 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-26 20:36:41,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241243420] [2020-10-26 20:36:41,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:41,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:36:41,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527549622] [2020-10-26 20:36:41,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:36:41,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:41,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:36:41,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:36:41,526 INFO L87 Difference]: Start difference. First operand 4992 states and 5834 transitions. Second operand 6 states. [2020-10-26 20:36:43,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:43,105 INFO L93 Difference]: Finished difference Result 9326 states and 11062 transitions. [2020-10-26 20:36:43,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:36:43,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 310 [2020-10-26 20:36:43,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:43,108 INFO L225 Difference]: With dead ends: 9326 [2020-10-26 20:36:43,109 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 20:36:43,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:36:43,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 20:36:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 20:36:43,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 20:36:43,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 20:36:43,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 310 [2020-10-26 20:36:43,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:43,135 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 20:36:43,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:36:43,135 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 20:36:43,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 20:36:43,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 20:36:43,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-26 20:36:44,709 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 120 [2020-10-26 20:36:44,949 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 120 [2020-10-26 20:36:45,217 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 40 [2020-10-26 20:36:46,512 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 226 DAG size of output: 70 [2020-10-26 20:36:47,278 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 57 [2020-10-26 20:36:48,179 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 57 [2020-10-26 20:36:48,433 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 40 [2020-10-26 20:36:48,437 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-26 20:36:48,438 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-26 20:36:48,438 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-26 20:36:48,438 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-26 20:36:48,438 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-26 20:36:48,440 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= ~a21~0 |old(~a21~0)|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~a8~0 |old(~a8~0)|) (= ~f~0 |old(~f~0)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~a7~0 |old(~a7~0)|) (= ~w~0 |old(~w~0)|) (= ~u~0 |old(~u~0)|) (= ~e~0 |old(~e~0)|) (= ~a16~0 |old(~a16~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~y~0 |old(~y~0)|) (= |#t~string7.base| |old(#t~string7.base)|) (= ~a17~0 |old(~a17~0)|) (= ~c~0 |old(~c~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= ~z~0 |old(~z~0)|) (= ~a12~0 |old(~a12~0)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= ~a~0 |old(~a~0)|) (= ~a20~0 |old(~a20~0)|) (= ~x~0 |old(~x~0)|) (= ~d~0 |old(~d~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~v~0 |old(~v~0)|) (= ~b~0 |old(~b~0)|)) [2020-10-26 20:36:48,440 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-26 20:36:48,440 INFO L274 CegarLoopResult]: For program point L564-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,441 INFO L274 CegarLoopResult]: For program point L531-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,441 INFO L274 CegarLoopResult]: For program point L498-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,441 INFO L274 CegarLoopResult]: For program point L465-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,443 INFO L274 CegarLoopResult]: For program point L432-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,443 INFO L274 CegarLoopResult]: For program point L399-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,443 INFO L274 CegarLoopResult]: For program point L267(lines 267 392) no Hoare annotation was computed. [2020-10-26 20:36:48,443 INFO L274 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-10-26 20:36:48,443 INFO L274 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-10-26 20:36:48,443 INFO L274 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-10-26 20:36:48,443 INFO L274 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-10-26 20:36:48,443 INFO L274 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-10-26 20:36:48,444 INFO L274 CegarLoopResult]: For program point L400(line 400) no Hoare annotation was computed. [2020-10-26 20:36:48,445 INFO L274 CegarLoopResult]: For program point L367(lines 367 392) no Hoare annotation was computed. [2020-10-26 20:36:48,445 INFO L274 CegarLoopResult]: For program point L301(lines 301 392) no Hoare annotation was computed. [2020-10-26 20:36:48,445 INFO L274 CegarLoopResult]: For program point L37(lines 37 392) no Hoare annotation was computed. [2020-10-26 20:36:48,445 INFO L274 CegarLoopResult]: For program point L335(lines 335 392) no Hoare annotation was computed. [2020-10-26 20:36:48,445 INFO L274 CegarLoopResult]: For program point L104(lines 104 392) no Hoare annotation was computed. [2020-10-26 20:36:48,445 INFO L274 CegarLoopResult]: For program point L567-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,445 INFO L274 CegarLoopResult]: For program point L534-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,445 INFO L274 CegarLoopResult]: For program point L501-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,445 INFO L274 CegarLoopResult]: For program point L468-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,445 INFO L274 CegarLoopResult]: For program point L435-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,446 INFO L274 CegarLoopResult]: For program point L402-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,446 INFO L274 CegarLoopResult]: For program point L270(lines 270 392) no Hoare annotation was computed. [2020-10-26 20:36:48,446 INFO L274 CegarLoopResult]: For program point L138(lines 138 392) no Hoare annotation was computed. [2020-10-26 20:36:48,446 INFO L274 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-10-26 20:36:48,446 INFO L274 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-10-26 20:36:48,446 INFO L274 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-10-26 20:36:48,446 INFO L274 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-10-26 20:36:48,447 INFO L274 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-10-26 20:36:48,447 INFO L274 CegarLoopResult]: For program point L403(line 403) no Hoare annotation was computed. [2020-10-26 20:36:48,447 INFO L274 CegarLoopResult]: For program point L205(lines 205 392) no Hoare annotation was computed. [2020-10-26 20:36:48,447 INFO L274 CegarLoopResult]: For program point L74(lines 74 392) no Hoare annotation was computed. [2020-10-26 20:36:48,447 INFO L274 CegarLoopResult]: For program point L570-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,447 INFO L274 CegarLoopResult]: For program point L537-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,447 INFO L274 CegarLoopResult]: For program point L504-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,447 INFO L274 CegarLoopResult]: For program point L471-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,447 INFO L274 CegarLoopResult]: For program point L438-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,447 INFO L274 CegarLoopResult]: For program point L405-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,447 INFO L274 CegarLoopResult]: For program point L339(lines 339 392) no Hoare annotation was computed. [2020-10-26 20:36:48,447 INFO L274 CegarLoopResult]: For program point L240(lines 240 392) no Hoare annotation was computed. [2020-10-26 20:36:48,448 INFO L274 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-10-26 20:36:48,448 INFO L274 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-10-26 20:36:48,448 INFO L274 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-10-26 20:36:48,448 INFO L274 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-10-26 20:36:48,448 INFO L274 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-10-26 20:36:48,449 INFO L274 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-10-26 20:36:48,449 INFO L274 CegarLoopResult]: For program point L175(lines 175 392) no Hoare annotation was computed. [2020-10-26 20:36:48,449 INFO L274 CegarLoopResult]: For program point L142(lines 142 392) no Hoare annotation was computed. [2020-10-26 20:36:48,449 INFO L274 CegarLoopResult]: For program point L374(lines 374 392) no Hoare annotation was computed. [2020-10-26 20:36:48,450 INFO L274 CegarLoopResult]: For program point L308(lines 308 392) no Hoare annotation was computed. [2020-10-26 20:36:48,450 INFO L274 CegarLoopResult]: For program point L275(lines 275 392) no Hoare annotation was computed. [2020-10-26 20:36:48,450 INFO L274 CegarLoopResult]: For program point L110(lines 110 392) no Hoare annotation was computed. [2020-10-26 20:36:48,450 INFO L274 CegarLoopResult]: For program point L573-1(lines 573 575) no Hoare annotation was computed. [2020-10-26 20:36:48,452 INFO L274 CegarLoopResult]: For program point L540-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,452 INFO L274 CegarLoopResult]: For program point L507-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,452 INFO L274 CegarLoopResult]: For program point L474-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,452 INFO L274 CegarLoopResult]: For program point L441-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,452 INFO L274 CegarLoopResult]: For program point L408-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,453 INFO L274 CegarLoopResult]: For program point L210(lines 210 392) no Hoare annotation was computed. [2020-10-26 20:36:48,453 INFO L274 CegarLoopResult]: For program point L45(lines 45 392) no Hoare annotation was computed. [2020-10-26 20:36:48,453 INFO L270 CegarLoopResult]: At program point L574(line 574) the Hoare annotation is: (let ((.cse3 (not (= 4 |old(~a16~0)|))) (.cse0 (= |old(~a8~0)| 13)) (.cse1 (not (= |old(~a20~0)| |old(~a21~0)|))) (.cse2 (not (= |old(~a21~0)| 1)))) (and (or .cse0 .cse1 .cse2 .cse3 (= |old(~a7~0)| 1)) (not (= 0 |old(~a21~0)|)) (or .cse1 .cse2 (not (= |old(~a7~0)| 0)) .cse3) (or .cse0 .cse1 (not (<= 6 |old(~a16~0)|)) .cse2) (or (not (= 0 |old(~a20~0)|)) .cse2) (or (not (= |old(~a17~0)| 1)) .cse1 .cse2) (or .cse0 .cse1 (not (= 5 |old(~a16~0)|)) .cse2))) [2020-10-26 20:36:48,453 INFO L274 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-10-26 20:36:48,453 INFO L274 CegarLoopResult]: For program point L574-1(line 574) no Hoare annotation was computed. [2020-10-26 20:36:48,453 INFO L274 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-10-26 20:36:48,453 INFO L274 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-10-26 20:36:48,453 INFO L274 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-10-26 20:36:48,453 INFO L274 CegarLoopResult]: For program point L409(line 409) no Hoare annotation was computed. [2020-10-26 20:36:48,454 INFO L274 CegarLoopResult]: For program point L146(lines 146 392) no Hoare annotation was computed. [2020-10-26 20:36:48,454 INFO L274 CegarLoopResult]: For program point L543-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,454 INFO L274 CegarLoopResult]: For program point L510-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,454 INFO L274 CegarLoopResult]: For program point L477-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,454 INFO L274 CegarLoopResult]: For program point L444-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,454 INFO L274 CegarLoopResult]: For program point L411-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,454 INFO L274 CegarLoopResult]: For program point L180(lines 180 392) no Hoare annotation was computed. [2020-10-26 20:36:48,454 INFO L274 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-10-26 20:36:48,454 INFO L274 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-10-26 20:36:48,454 INFO L274 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-10-26 20:36:48,454 INFO L274 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-10-26 20:36:48,454 INFO L274 CegarLoopResult]: For program point L412(line 412) no Hoare annotation was computed. [2020-10-26 20:36:48,455 INFO L274 CegarLoopResult]: For program point L379(lines 379 392) no Hoare annotation was computed. [2020-10-26 20:36:48,455 INFO L274 CegarLoopResult]: For program point L280(lines 280 392) no Hoare annotation was computed. [2020-10-26 20:36:48,455 INFO L274 CegarLoopResult]: For program point L247(lines 247 392) no Hoare annotation was computed. [2020-10-26 20:36:48,455 INFO L274 CegarLoopResult]: For program point L82(lines 82 392) no Hoare annotation was computed. [2020-10-26 20:36:48,456 INFO L274 CegarLoopResult]: For program point L347(lines 347 392) no Hoare annotation was computed. [2020-10-26 20:36:48,456 INFO L274 CegarLoopResult]: For program point L314(lines 314 392) no Hoare annotation was computed. [2020-10-26 20:36:48,456 INFO L274 CegarLoopResult]: For program point L116(lines 116 392) no Hoare annotation was computed. [2020-10-26 20:36:48,456 INFO L274 CegarLoopResult]: For program point L546-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,456 INFO L274 CegarLoopResult]: For program point L513-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,456 INFO L274 CegarLoopResult]: For program point L480-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,456 INFO L274 CegarLoopResult]: For program point L447-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,456 INFO L274 CegarLoopResult]: For program point L414-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,456 INFO L274 CegarLoopResult]: For program point L216(lines 216 392) no Hoare annotation was computed. [2020-10-26 20:36:48,456 INFO L274 CegarLoopResult]: For program point L150(lines 150 392) no Hoare annotation was computed. [2020-10-26 20:36:48,456 INFO L274 CegarLoopResult]: For program point L51(lines 51 392) no Hoare annotation was computed. [2020-10-26 20:36:48,457 INFO L274 CegarLoopResult]: For program point calculate_outputFINAL(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,457 INFO L274 CegarLoopResult]: For program point calculate_outputEXIT(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,457 INFO L274 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-10-26 20:36:48,458 INFO L274 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-10-26 20:36:48,458 INFO L274 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-10-26 20:36:48,458 INFO L274 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-10-26 20:36:48,458 INFO L274 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-10-26 20:36:48,458 INFO L274 CegarLoopResult]: For program point L86(lines 86 392) no Hoare annotation was computed. [2020-10-26 20:36:48,458 INFO L274 CegarLoopResult]: For program point L549-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,459 INFO L274 CegarLoopResult]: For program point L516-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,459 INFO L274 CegarLoopResult]: For program point L483-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,459 INFO L274 CegarLoopResult]: For program point L450-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,459 INFO L274 CegarLoopResult]: For program point L384(lines 384 392) no Hoare annotation was computed. [2020-10-26 20:36:48,459 INFO L274 CegarLoopResult]: For program point L417-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,459 INFO L274 CegarLoopResult]: For program point L318(lines 318 392) no Hoare annotation was computed. [2020-10-26 20:36:48,459 INFO L274 CegarLoopResult]: For program point L252(lines 252 392) no Hoare annotation was computed. [2020-10-26 20:36:48,460 INFO L274 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-10-26 20:36:48,460 INFO L274 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-10-26 20:36:48,460 INFO L274 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-10-26 20:36:48,460 INFO L274 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-10-26 20:36:48,460 INFO L274 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-10-26 20:36:48,460 INFO L274 CegarLoopResult]: For program point L220(lines 220 392) no Hoare annotation was computed. [2020-10-26 20:36:48,460 INFO L274 CegarLoopResult]: For program point L154(lines 154 392) no Hoare annotation was computed. [2020-10-26 20:36:48,461 INFO L274 CegarLoopResult]: For program point L121(lines 121 392) no Hoare annotation was computed. [2020-10-26 20:36:48,461 INFO L274 CegarLoopResult]: For program point L320(lines 320 392) no Hoare annotation was computed. [2020-10-26 20:36:48,461 INFO L274 CegarLoopResult]: For program point L188(lines 188 392) no Hoare annotation was computed. [2020-10-26 20:36:48,461 INFO L274 CegarLoopResult]: For program point L56(lines 56 392) no Hoare annotation was computed. [2020-10-26 20:36:48,461 INFO L274 CegarLoopResult]: For program point L552-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,461 INFO L274 CegarLoopResult]: For program point L519-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,461 INFO L274 CegarLoopResult]: For program point L486-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,462 INFO L274 CegarLoopResult]: For program point L453-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,462 INFO L274 CegarLoopResult]: For program point L420-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,462 INFO L274 CegarLoopResult]: For program point L288(lines 288 392) no Hoare annotation was computed. [2020-10-26 20:36:48,462 INFO L274 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-10-26 20:36:48,462 INFO L274 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-10-26 20:36:48,462 INFO L274 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-10-26 20:36:48,462 INFO L274 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-10-26 20:36:48,462 INFO L274 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-10-26 20:36:48,462 INFO L274 CegarLoopResult]: For program point L355(lines 355 392) no Hoare annotation was computed. [2020-10-26 20:36:48,462 INFO L274 CegarLoopResult]: For program point L191(lines 191 392) no Hoare annotation was computed. [2020-10-26 20:36:48,462 INFO L274 CegarLoopResult]: For program point L555-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,462 INFO L274 CegarLoopResult]: For program point L522-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,463 INFO L270 CegarLoopResult]: At program point calculate_outputENTRY(lines 32 577) the Hoare annotation is: (let ((.cse5 (= ~a16~0 4)) (.cse7 (not (= 4 |old(~a16~0)|))) (.cse11 (= ~a16~0 |old(~a16~0)|)) (.cse8 (= |old(~a8~0)| 13)) (.cse0 (not (= |old(~a20~0)| |old(~a21~0)|))) (.cse1 (not (= |old(~a21~0)| 1))) (.cse2 (= ~a17~0 |old(~a17~0)|)) (.cse9 (= ~a7~0 |old(~a7~0)|)) (.cse3 (= ~a20~0 |old(~a20~0)|)) (.cse10 (not (= ~a8~0 13))) (.cse4 (= ~a8~0 |old(~a8~0)|)) (.cse6 (= ~a21~0 ~a20~0))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4 .cse5 .cse6 (= ~a7~0 0)) (not (= |old(~a7~0)| 0)) .cse7) (or .cse8 (and .cse2 .cse9 .cse3 .cse10 .cse4 .cse5 .cse6) .cse0 .cse1 .cse7 (= |old(~a7~0)| 1)) (or (not (= |old(~a17~0)| 1)) (and .cse9 .cse2 .cse3 .cse11 .cse4 .cse6) .cse0 .cse1) (or (and .cse2 .cse9 .cse3 .cse10 .cse11 .cse4 .cse6) .cse8 .cse0 (not (<= 6 |old(~a16~0)|)) .cse1) (or (not (= 0 |old(~a21~0)|)) (and .cse9 .cse2 .cse3 .cse11 .cse4 (= ~a21~0 0))) (or (not (= 0 |old(~a20~0)|)) (and .cse9 .cse2 (= ~a21~0 1) .cse3 .cse11 .cse4) .cse1) (or .cse8 .cse0 (not (= 5 |old(~a16~0)|)) .cse1 (and .cse2 .cse9 .cse3 .cse10 .cse4 .cse6 (= 5 ~a16~0))))) [2020-10-26 20:36:48,463 INFO L274 CegarLoopResult]: For program point L489-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,463 INFO L274 CegarLoopResult]: For program point L456-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,463 INFO L274 CegarLoopResult]: For program point L423-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,463 INFO L274 CegarLoopResult]: For program point L357(lines 357 392) no Hoare annotation was computed. [2020-10-26 20:36:48,463 INFO L274 CegarLoopResult]: For program point L258(lines 258 392) no Hoare annotation was computed. [2020-10-26 20:36:48,463 INFO L274 CegarLoopResult]: For program point L225(lines 225 392) no Hoare annotation was computed. [2020-10-26 20:36:48,463 INFO L274 CegarLoopResult]: For program point L126(lines 126 392) no Hoare annotation was computed. [2020-10-26 20:36:48,464 INFO L274 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-10-26 20:36:48,464 INFO L274 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-10-26 20:36:48,464 INFO L274 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-10-26 20:36:48,464 INFO L274 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-10-26 20:36:48,464 INFO L274 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-10-26 20:36:48,464 INFO L274 CegarLoopResult]: For program point L94(lines 94 392) no Hoare annotation was computed. [2020-10-26 20:36:48,464 INFO L274 CegarLoopResult]: For program point L326(lines 326 392) no Hoare annotation was computed. [2020-10-26 20:36:48,464 INFO L274 CegarLoopResult]: For program point L558-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,464 INFO L274 CegarLoopResult]: For program point L525-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,464 INFO L274 CegarLoopResult]: For program point L492-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,464 INFO L274 CegarLoopResult]: For program point L459-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,465 INFO L274 CegarLoopResult]: For program point L393(lines 393 395) no Hoare annotation was computed. [2020-10-26 20:36:48,465 INFO L274 CegarLoopResult]: For program point L426-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,465 INFO L274 CegarLoopResult]: For program point L393-2(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,465 INFO L274 CegarLoopResult]: For program point L294(lines 294 392) no Hoare annotation was computed. [2020-10-26 20:36:48,465 INFO L274 CegarLoopResult]: For program point L162(lines 162 392) no Hoare annotation was computed. [2020-10-26 20:36:48,465 INFO L274 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-10-26 20:36:48,465 INFO L274 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-10-26 20:36:48,465 INFO L274 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-10-26 20:36:48,465 INFO L274 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-10-26 20:36:48,465 INFO L274 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-10-26 20:36:48,465 INFO L274 CegarLoopResult]: For program point L394(line 394) no Hoare annotation was computed. [2020-10-26 20:36:48,465 INFO L274 CegarLoopResult]: For program point L196(lines 196 392) no Hoare annotation was computed. [2020-10-26 20:36:48,466 INFO L274 CegarLoopResult]: For program point L64(lines 64 392) no Hoare annotation was computed. [2020-10-26 20:36:48,466 INFO L274 CegarLoopResult]: For program point L263(lines 263 392) no Hoare annotation was computed. [2020-10-26 20:36:48,466 INFO L274 CegarLoopResult]: For program point L131(lines 131 392) no Hoare annotation was computed. [2020-10-26 20:36:48,466 INFO L274 CegarLoopResult]: For program point L561-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,466 INFO L274 CegarLoopResult]: For program point L528-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,466 INFO L274 CegarLoopResult]: For program point L495-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,466 INFO L274 CegarLoopResult]: For program point L462-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,466 INFO L274 CegarLoopResult]: For program point L429-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,466 INFO L274 CegarLoopResult]: For program point L363(lines 363 392) no Hoare annotation was computed. [2020-10-26 20:36:48,466 INFO L274 CegarLoopResult]: For program point L396-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:36:48,466 INFO L274 CegarLoopResult]: For program point L99(lines 99 392) no Hoare annotation was computed. [2020-10-26 20:36:48,467 INFO L274 CegarLoopResult]: For program point L33(lines 33 392) no Hoare annotation was computed. [2020-10-26 20:36:48,467 INFO L274 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-10-26 20:36:48,467 INFO L274 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-10-26 20:36:48,467 INFO L274 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-10-26 20:36:48,467 INFO L274 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-10-26 20:36:48,467 INFO L274 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-10-26 20:36:48,467 INFO L274 CegarLoopResult]: For program point L397(line 397) no Hoare annotation was computed. [2020-10-26 20:36:48,467 INFO L274 CegarLoopResult]: For program point L331(lines 331 392) no Hoare annotation was computed. [2020-10-26 20:36:48,467 INFO L274 CegarLoopResult]: For program point L199(lines 199 392) no Hoare annotation was computed. [2020-10-26 20:36:48,467 INFO L274 CegarLoopResult]: For program point L67(lines 67 392) no Hoare annotation was computed. [2020-10-26 20:36:48,468 INFO L274 CegarLoopResult]: For program point L365(lines 365 392) no Hoare annotation was computed. [2020-10-26 20:36:48,468 INFO L274 CegarLoopResult]: For program point L233(lines 233 392) no Hoare annotation was computed. [2020-10-26 20:36:48,468 INFO L274 CegarLoopResult]: For program point L167(lines 167 392) no Hoare annotation was computed. [2020-10-26 20:36:48,469 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-26 20:36:48,469 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~a12~0 8) (= ~a8~0 15) (= ~a20~0 1) (= ~a21~0 ~a20~0) (= 5 ~a16~0) (= ~a7~0 0) (= ~a17~0 1)) [2020-10-26 20:36:48,469 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-26 20:36:48,469 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-26 20:36:48,469 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 579 596) the Hoare annotation is: (or (not (= |old(~a17~0)| 1)) (and (= ~a17~0 |old(~a17~0)|) (= ~a20~0 |old(~a20~0)|) (= ~a8~0 15) (= ~a21~0 ~a20~0) (= 5 ~a16~0) (= ~a7~0 0)) (not (= |old(~a20~0)| |old(~a21~0)|)) (not (= 5 |old(~a16~0)|)) (not (= 15 |old(~a8~0)|)) (not (= |old(~a21~0)| 1)) (not (= ~a12~0 8)) (not (= |old(~a7~0)| 0))) [2020-10-26 20:36:48,469 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 579 596) no Hoare annotation was computed. [2020-10-26 20:36:48,470 INFO L270 CegarLoopResult]: At program point L593(line 593) the Hoare annotation is: (let ((.cse1 (= ~a21~0 1)) (.cse2 (not (= ~a8~0 13))) (.cse3 (= ~a16~0 4)) (.cse0 (= ~a21~0 ~a20~0))) (or (and (= ~a20~0 1) .cse0 (= ~a17~0 1)) (and (<= 6 ~a16~0) .cse1 .cse2 .cse0) (not (= |old(~a20~0)| 1)) (= ~a21~0 0) (and .cse1 .cse2 .cse0 (= 5 ~a16~0)) (and (= ~a20~0 0) .cse1) (not (= |old(~a17~0)| 1)) (and .cse1 .cse3 .cse0 (= ~a7~0 0)) (not (= |old(~a20~0)| |old(~a21~0)|)) (not (= 5 |old(~a16~0)|)) (not (= 15 |old(~a8~0)|)) (not (= |old(~a7~0)| 0)) (not (= ~a12~0 8)) (and .cse1 .cse2 .cse3 .cse0 (not (= ~a7~0 1))))) [2020-10-26 20:36:48,470 INFO L274 CegarLoopResult]: For program point L593-1(line 593) no Hoare annotation was computed. [2020-10-26 20:36:48,470 INFO L274 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-10-26 20:36:48,470 INFO L270 CegarLoopResult]: At program point L585-2(lines 585 595) the Hoare annotation is: (let ((.cse1 (= ~a21~0 1)) (.cse2 (not (= ~a8~0 13))) (.cse3 (= ~a16~0 4)) (.cse0 (= ~a21~0 ~a20~0))) (or (and (= ~a20~0 1) .cse0 (= ~a17~0 1)) (and (<= 6 ~a16~0) .cse1 .cse2 .cse0) (not (= |old(~a20~0)| 1)) (= ~a21~0 0) (and .cse1 .cse2 .cse0 (= 5 ~a16~0)) (and (= ~a20~0 0) .cse1) (not (= |old(~a17~0)| 1)) (and .cse1 .cse3 .cse0 (= ~a7~0 0)) (not (= |old(~a20~0)| |old(~a21~0)|)) (not (= 5 |old(~a16~0)|)) (not (= 15 |old(~a8~0)|)) (not (= |old(~a7~0)| 0)) (not (= ~a12~0 8)) (and .cse1 .cse2 .cse3 .cse0 (not (= ~a7~0 1))))) [2020-10-26 20:36:48,470 INFO L274 CegarLoopResult]: For program point L585-3(lines 579 596) no Hoare annotation was computed. [2020-10-26 20:36:48,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:36:48 BoogieIcfgContainer [2020-10-26 20:36:48,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 20:36:48,520 INFO L168 Benchmark]: Toolchain (without parser) took 105675.91 ms. Allocated memory was 168.8 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 142.5 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 768.3 MB. Max. memory is 8.0 GB. [2020-10-26 20:36:48,521 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 100.7 MB in the end (delta: 73.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:36:48,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1031.81 ms. Allocated memory is still 168.8 MB. Free memory was 141.9 MB in the beginning and 146.5 MB in the end (delta: -4.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. [2020-10-26 20:36:48,526 INFO L168 Benchmark]: Boogie Preprocessor took 159.16 ms. Allocated memory is still 168.8 MB. Free memory was 146.5 MB in the beginning and 141.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-26 20:36:48,527 INFO L168 Benchmark]: RCFGBuilder took 1710.73 ms. Allocated memory is still 168.8 MB. Free memory was 141.6 MB in the beginning and 79.5 MB in the end (delta: 62.2 MB). Peak memory consumption was 64.1 MB. Max. memory is 8.0 GB. [2020-10-26 20:36:48,527 INFO L168 Benchmark]: TraceAbstraction took 102755.00 ms. Allocated memory was 168.8 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 79.0 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 704.6 MB. Max. memory is 8.0 GB. [2020-10-26 20:36:48,534 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 100.7 MB in the end (delta: 73.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1031.81 ms. Allocated memory is still 168.8 MB. Free memory was 141.9 MB in the beginning and 146.5 MB in the end (delta: -4.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 159.16 ms. Allocated memory is still 168.8 MB. Free memory was 146.5 MB in the beginning and 141.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1710.73 ms. Allocated memory is still 168.8 MB. Free memory was 141.6 MB in the beginning and 79.5 MB in the end (delta: 62.2 MB). Peak memory consumption was 64.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 102755.00 ms. Allocated memory was 168.8 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 79.0 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 704.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: ((((((((((((((a20 == 1 && a21 == a20) && a17 == 1) || (((6 <= a16 && a21 == 1) && !(a8 == 13)) && a21 == a20)) || !(\old(a20) == 1)) || a21 == 0) || (((a21 == 1 && !(a8 == 13)) && a21 == a20) && 5 == a16)) || (a20 == 0 && a21 == 1)) || !(\old(a17) == 1)) || (((a21 == 1 && a16 == 4) && a21 == a20) && a7 == 0)) || !(\old(a20) == \old(a21))) || !(5 == \old(a16))) || !(15 == \old(a8))) || !(\old(a7) == 0)) || !(a12 == 8)) || ((((a21 == 1 && !(a8 == 13)) && a16 == 4) && a21 == a20) && !(a7 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 97.2s, OverallIterations: 14, TraceHistogramMax: 7, AutomataDifference: 30.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 358 SDtfs, 6950 SDslu, 548 SDs, 0 SdLazy, 12222 SolverSat, 1935 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 298 GetRequests, 156 SyntacticMatches, 5 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4992occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 1095 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 512 PreInvPairs, 622 NumberOfFragments, 712 HoareAnnotationTreeSize, 512 FomulaSimplifications, 29985 FormulaSimplificationTreeSizeReduction, 1.8s HoareSimplificationTime, 9 FomulaSimplificationsInter, 11665 FormulaSimplificationTreeSizeReductionInter, 3.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 63.1s InterpolantComputationTime, 2962 NumberOfCodeBlocks, 2962 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2948 ConstructedInterpolants, 0 QuantifiedInterpolants, 2408609 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 1 PerfectInterpolantSequences, 1681/2030 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...