/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/Problem12_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:54:28,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:54:28,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:54:28,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:54:28,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:54:28,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:54:28,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:54:28,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:54:28,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:54:28,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:54:28,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:54:28,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:54:28,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:54:28,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:54:28,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:54:28,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:54:28,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:54:28,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:54:28,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:54:28,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:54:28,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:54:28,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:54:28,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:54:28,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:54:28,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:54:28,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:54:28,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:54:28,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:54:28,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:54:28,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:54:28,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:54:28,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:54:28,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:54:28,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:54:28,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:54:28,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:54:28,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:54:28,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:54:28,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:54:28,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:54:28,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:54:28,166 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 22:54:28,231 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:54:28,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:54:28,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:54:28,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:54:28,238 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:54:28,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:54:28,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:54:28,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:54:28,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:54:28,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:54:28,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:54:28,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:54:28,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:54:28,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:54:28,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:54:28,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:54:28,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:54:28,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:54:28,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:54:28,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:54:28,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:54:28,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:54:28,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:54:28,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:54:28,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:54:28,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:54:28,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:54:28,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:54:28,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:54:28,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:54:28,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:54:28,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:54:28,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:54:28,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:54:28,846 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:54:28,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label30.c [2020-10-26 22:54:28,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af78819c0/7a65d768758e4062b5573121e10b081b/FLAGc389802c3 [2020-10-26 22:54:30,081 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:54:30,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label30.c [2020-10-26 22:54:30,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af78819c0/7a65d768758e4062b5573121e10b081b/FLAGc389802c3 [2020-10-26 22:54:30,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af78819c0/7a65d768758e4062b5573121e10b081b [2020-10-26 22:54:30,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:54:30,509 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:54:30,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:54:30,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:54:30,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:54:30,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:54:30" (1/1) ... [2020-10-26 22:54:30,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5a2305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:54:30, skipping insertion in model container [2020-10-26 22:54:30,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:54:30" (1/1) ... [2020-10-26 22:54:30,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:54:30,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:54:32,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:54:32,269 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:54:33,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:54:33,092 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:54:33,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:54:33 WrapperNode [2020-10-26 22:54:33,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:54:33,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:54:33,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:54:33,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:54:33,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:54:33" (1/1) ... [2020-10-26 22:54:33,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:54:33" (1/1) ... [2020-10-26 22:54:33,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:54:33" (1/1) ... [2020-10-26 22:54:33,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:54:33" (1/1) ... [2020-10-26 22:54:33,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:54:33" (1/1) ... [2020-10-26 22:54:33,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:54:33" (1/1) ... [2020-10-26 22:54:33,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:54:33" (1/1) ... [2020-10-26 22:54:33,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:54:33,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:54:33,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:54:33,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:54:33,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:54:33" (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 22:54:33,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:54:33,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:54:33,622 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:54:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:54:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 22:54:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 22:54:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 22:54:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:54:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:54:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 22:54:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 22:54:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 22:54:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:54:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:54:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:54:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:54:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:54:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:54:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:54:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:54:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:54:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:54:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:54:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:54:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:54:40,588 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:54:40,589 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:54:40,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:54:40 BoogieIcfgContainer [2020-10-26 22:54:40,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:54:40,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:54:40,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:54:40,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:54:40,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:54:30" (1/3) ... [2020-10-26 22:54:40,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41feade7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:54:40, skipping insertion in model container [2020-10-26 22:54:40,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:54:33" (2/3) ... [2020-10-26 22:54:40,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41feade7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:54:40, skipping insertion in model container [2020-10-26 22:54:40,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:54:40" (3/3) ... [2020-10-26 22:54:40,607 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label30.c [2020-10-26 22:54:40,624 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:54:40,633 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:54:40,652 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:54:40,694 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:54:40,695 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:54:40,695 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:54:40,695 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:54:40,695 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:54:40,695 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:54:40,695 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:54:40,696 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:54:40,742 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-26 22:54:40,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 22:54:40,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:54:40,753 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] [2020-10-26 22:54:40,754 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:54:40,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:54:40,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1762416860, now seen corresponding path program 1 times [2020-10-26 22:54:40,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:54:40,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398527835] [2020-10-26 22:54:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:54:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:41,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:41,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:41,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 22:54:41,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-26 22:54:41,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:54:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:54:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 22:54:41,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:54:41,912 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 22:54:41,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:54:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:41,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:41,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:54:41,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:41,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 22:54:41,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:41,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:54:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:54:41,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:54:42,031 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 22:54:42,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398527835] [2020-10-26 22:54:42,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:54:42,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:54:42,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778656992] [2020-10-26 22:54:42,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:54:42,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:54:42,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:54:42,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:54:42,074 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-26 22:54:42,293 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 22:54:53,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:54:53,981 INFO L93 Difference]: Finished difference Result 2476 states and 4741 transitions. [2020-10-26 22:54:53,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:54:53,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-26 22:54:53,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:54:54,016 INFO L225 Difference]: With dead ends: 2476 [2020-10-26 22:54:54,017 INFO L226 Difference]: Without dead ends: 1569 [2020-10-26 22:54:54,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:54:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-26 22:54:54,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1556. [2020-10-26 22:54:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-26 22:54:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2404 transitions. [2020-10-26 22:54:54,252 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2404 transitions. Word has length 32 [2020-10-26 22:54:54,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:54:54,253 INFO L481 AbstractCegarLoop]: Abstraction has 1556 states and 2404 transitions. [2020-10-26 22:54:54,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:54:54,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2404 transitions. [2020-10-26 22:54:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-26 22:54:54,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:54:54,259 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:54:54,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:54:54,260 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:54:54,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:54:54,261 INFO L82 PathProgramCache]: Analyzing trace with hash 712691802, now seen corresponding path program 1 times [2020-10-26 22:54:54,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:54:54,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917803301] [2020-10-26 22:54:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:54:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:54,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:55,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:55,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 22:54:55,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:54:55,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-26 22:54:55,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:54:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:54:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 22:54:55,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:54:55,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:54:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:55,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:55,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:55,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:54:55,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 22:54:55,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:54:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:54:55,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:55,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:54:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:55,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:55,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:55,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:54:55,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 22:54:55,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:54:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:54:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:54:55,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:54:55,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917803301] [2020-10-26 22:54:55,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:54:55,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:54:55,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494958938] [2020-10-26 22:54:55,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:54:55,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:54:55,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:54:55,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:54:55,682 INFO L87 Difference]: Start difference. First operand 1556 states and 2404 transitions. Second operand 6 states. [2020-10-26 22:55:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:55:09,119 INFO L93 Difference]: Finished difference Result 4721 states and 7349 transitions. [2020-10-26 22:55:09,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:55:09,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-26 22:55:09,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:55:09,148 INFO L225 Difference]: With dead ends: 4721 [2020-10-26 22:55:09,149 INFO L226 Difference]: Without dead ends: 3171 [2020-10-26 22:55:09,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:55:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2020-10-26 22:55:09,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3150. [2020-10-26 22:55:09,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3150 states. [2020-10-26 22:55:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 4314 transitions. [2020-10-26 22:55:09,310 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 4314 transitions. Word has length 107 [2020-10-26 22:55:09,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:55:09,313 INFO L481 AbstractCegarLoop]: Abstraction has 3150 states and 4314 transitions. [2020-10-26 22:55:09,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:55:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 4314 transitions. [2020-10-26 22:55:09,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-26 22:55:09,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:55:09,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:09,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:55:09,326 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:55:09,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:55:09,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2083990414, now seen corresponding path program 1 times [2020-10-26 22:55:09,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:55:09,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133851262] [2020-10-26 22:55:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:55:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:09,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:09,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:10,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:10,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-26 22:55:10,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:55:10,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1441 [2020-10-26 22:55:10,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:10,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:55:10,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:55:10,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:55:10,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:10,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:55:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:10,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:10,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:10,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:55:10,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:10,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 22:55:10,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:55:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:55:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:55:10,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:11,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:55:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:11,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:11,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 22:55:11,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:11,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-26 22:55:11,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:55:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:55:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 22:55:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:55:11,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133851262] [2020-10-26 22:55:11,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:55:11,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 22:55:11,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624324597] [2020-10-26 22:55:11,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:55:11,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:55:11,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:55:11,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:55:11,417 INFO L87 Difference]: Start difference. First operand 3150 states and 4314 transitions. Second operand 8 states. [2020-10-26 22:55:32,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:55:32,093 INFO L93 Difference]: Finished difference Result 12712 states and 17967 transitions. [2020-10-26 22:55:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:55:32,095 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-26 22:55:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:55:32,159 INFO L225 Difference]: With dead ends: 12712 [2020-10-26 22:55:32,159 INFO L226 Difference]: Without dead ends: 9568 [2020-10-26 22:55:32,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:55:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9568 states. [2020-10-26 22:55:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9568 to 9552. [2020-10-26 22:55:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9552 states. [2020-10-26 22:55:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9552 states to 9552 states and 12507 transitions. [2020-10-26 22:55:32,516 INFO L78 Accepts]: Start accepts. Automaton has 9552 states and 12507 transitions. Word has length 113 [2020-10-26 22:55:32,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:55:32,517 INFO L481 AbstractCegarLoop]: Abstraction has 9552 states and 12507 transitions. [2020-10-26 22:55:32,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:55:32,517 INFO L276 IsEmpty]: Start isEmpty. Operand 9552 states and 12507 transitions. [2020-10-26 22:55:32,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-26 22:55:32,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:55:32,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:32,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:55:32,520 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:55:32,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:55:32,521 INFO L82 PathProgramCache]: Analyzing trace with hash 854471430, now seen corresponding path program 1 times [2020-10-26 22:55:32,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:55:32,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821733976] [2020-10-26 22:55:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:55:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:32,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:32,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:33,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:33,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 22:55:33,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:55:33,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-26 22:55:33,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:33,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:55:33,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:55:33,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 22:55:33,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:33,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:55:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:33,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:33,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:55:33,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:33,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 22:55:33,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:55:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:55:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:55:33,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:33,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:55:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:33,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:33,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 22:55:33,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:33,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 22:55:33,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:55:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:55:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 22:55:33,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:55:33,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821733976] [2020-10-26 22:55:33,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:55:33,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:55:33,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41949284] [2020-10-26 22:55:33,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:55:33,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:55:33,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:55:33,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:55:33,883 INFO L87 Difference]: Start difference. First operand 9552 states and 12507 transitions. Second operand 7 states. [2020-10-26 22:55:49,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:55:49,082 INFO L93 Difference]: Finished difference Result 29078 states and 39388 transitions. [2020-10-26 22:55:49,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:55:49,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-26 22:55:49,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:55:49,193 INFO L225 Difference]: With dead ends: 29078 [2020-10-26 22:55:49,193 INFO L226 Difference]: Without dead ends: 19532 [2020-10-26 22:55:49,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:55:49,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19532 states. [2020-10-26 22:55:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19532 to 16311. [2020-10-26 22:55:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16311 states. [2020-10-26 22:55:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16311 states to 16311 states and 21259 transitions. [2020-10-26 22:55:49,759 INFO L78 Accepts]: Start accepts. Automaton has 16311 states and 21259 transitions. Word has length 117 [2020-10-26 22:55:49,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:55:49,761 INFO L481 AbstractCegarLoop]: Abstraction has 16311 states and 21259 transitions. [2020-10-26 22:55:49,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:55:49,761 INFO L276 IsEmpty]: Start isEmpty. Operand 16311 states and 21259 transitions. [2020-10-26 22:55:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-26 22:55:49,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:55:49,768 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:49,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:55:49,768 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:55:49,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:55:49,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1920699404, now seen corresponding path program 1 times [2020-10-26 22:55:49,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:55:49,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15480318] [2020-10-26 22:55:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:55:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:49,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:51,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:51,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-26 22:55:51,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:55:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2090 [2020-10-26 22:55:51,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:51,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:55:51,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:55:51,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 22:55:51,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:52,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:55:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:52,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:52,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:55:52,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:52,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 22:55:52,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:55:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:55:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:55:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:52,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:55:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:52,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:52,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 22:55:52,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:52,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-26 22:55:52,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:52,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:55:52,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:55:52,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 22:55:52,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:55:52,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15480318] [2020-10-26 22:55:52,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:55:52,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:55:52,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217752951] [2020-10-26 22:55:52,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:55:52,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:55:52,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:55:52,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:55:52,909 INFO L87 Difference]: Start difference. First operand 16311 states and 21259 transitions. Second operand 7 states. [2020-10-26 22:56:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:56:05,426 INFO L93 Difference]: Finished difference Result 36211 states and 46973 transitions. [2020-10-26 22:56:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:56:05,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-26 22:56:05,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:56:05,507 INFO L225 Difference]: With dead ends: 36211 [2020-10-26 22:56:05,507 INFO L226 Difference]: Without dead ends: 19906 [2020-10-26 22:56:05,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:56:05,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19906 states. [2020-10-26 22:56:05,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19906 to 19663. [2020-10-26 22:56:05,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19663 states. [2020-10-26 22:56:06,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19663 states to 19663 states and 25135 transitions. [2020-10-26 22:56:06,048 INFO L78 Accepts]: Start accepts. Automaton has 19663 states and 25135 transitions. Word has length 180 [2020-10-26 22:56:06,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:56:06,049 INFO L481 AbstractCegarLoop]: Abstraction has 19663 states and 25135 transitions. [2020-10-26 22:56:06,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:56:06,049 INFO L276 IsEmpty]: Start isEmpty. Operand 19663 states and 25135 transitions. [2020-10-26 22:56:06,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-26 22:56:06,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:56:06,053 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:56:06,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:56:06,054 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:56:06,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:56:06,054 INFO L82 PathProgramCache]: Analyzing trace with hash -162142270, now seen corresponding path program 1 times [2020-10-26 22:56:06,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:56:06,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281251142] [2020-10-26 22:56:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:56:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:06,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:06,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:08,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:08,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-26 22:56:08,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:56:08,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1942 [2020-10-26 22:56:08,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:56:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:56:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:56:08,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:08,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:56:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:08,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:08,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:08,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:56:08,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:08,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:56:08,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:08,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:56:08,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:56:08,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:56:08,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:08,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:56:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:08,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:08,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:08,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:56:08,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:08,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 22:56:08,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:56:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:56:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:56:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:08,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 22:56:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:08,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:08,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:08,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-26 22:56:08,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:08,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-26 22:56:08,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:56:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:56:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 22:56:08,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:56:08,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281251142] [2020-10-26 22:56:08,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:56:08,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:56:08,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641250929] [2020-10-26 22:56:08,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:56:08,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:56:08,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:56:08,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:56:08,889 INFO L87 Difference]: Start difference. First operand 19663 states and 25135 transitions. Second operand 8 states. [2020-10-26 22:56:35,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:56:35,147 INFO L93 Difference]: Finished difference Result 47658 states and 60462 transitions. [2020-10-26 22:56:35,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:56:35,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 215 [2020-10-26 22:56:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:56:35,262 INFO L225 Difference]: With dead ends: 47658 [2020-10-26 22:56:35,262 INFO L226 Difference]: Without dead ends: 28768 [2020-10-26 22:56:35,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 22:56:35,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28768 states. [2020-10-26 22:56:36,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28768 to 27041. [2020-10-26 22:56:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27041 states. [2020-10-26 22:56:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27041 states to 27041 states and 31599 transitions. [2020-10-26 22:56:36,073 INFO L78 Accepts]: Start accepts. Automaton has 27041 states and 31599 transitions. Word has length 215 [2020-10-26 22:56:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:56:36,074 INFO L481 AbstractCegarLoop]: Abstraction has 27041 states and 31599 transitions. [2020-10-26 22:56:36,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:56:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 27041 states and 31599 transitions. [2020-10-26 22:56:36,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-26 22:56:36,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:56:36,078 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:56:36,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:56:36,078 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:56:36,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:56:36,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1375816842, now seen corresponding path program 1 times [2020-10-26 22:56:36,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:56:36,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541134639] [2020-10-26 22:56:36,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:56:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:36,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:37,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:37,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:37,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-26 22:56:37,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:56:37,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1421 [2020-10-26 22:56:37,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:56:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:56:37,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:56:37,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:37,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:56:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:37,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:37,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:37,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:56:37,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:37,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:56:37,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:56:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:56:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:56:37,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:56:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:37,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:37,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:56:37,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:37,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 22:56:37,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:56:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:56:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:56:37,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:37,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 22:56:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:38,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:38,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 22:56:38,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:38,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 22:56:38,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:56:38,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:56:38,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 22:56:38,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:56:38,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541134639] [2020-10-26 22:56:38,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:56:38,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:56:38,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058294386] [2020-10-26 22:56:38,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:56:38,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:56:38,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:56:38,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:56:38,222 INFO L87 Difference]: Start difference. First operand 27041 states and 31599 transitions. Second operand 7 states. [2020-10-26 22:56:56,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:56:56,624 INFO L93 Difference]: Finished difference Result 66669 states and 80303 transitions. [2020-10-26 22:56:56,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:56:56,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-26 22:56:56,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:56:56,770 INFO L225 Difference]: With dead ends: 66669 [2020-10-26 22:56:56,771 INFO L226 Difference]: Without dead ends: 36125 [2020-10-26 22:56:56,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:56:56,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36125 states. [2020-10-26 22:56:57,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36125 to 34231. [2020-10-26 22:56:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34231 states. [2020-10-26 22:56:57,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34231 states to 34231 states and 38693 transitions. [2020-10-26 22:56:57,561 INFO L78 Accepts]: Start accepts. Automaton has 34231 states and 38693 transitions. Word has length 221 [2020-10-26 22:56:57,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:56:57,561 INFO L481 AbstractCegarLoop]: Abstraction has 34231 states and 38693 transitions. [2020-10-26 22:56:57,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:56:57,562 INFO L276 IsEmpty]: Start isEmpty. Operand 34231 states and 38693 transitions. [2020-10-26 22:56:57,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-26 22:56:57,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:56:57,567 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:56:57,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:56:57,568 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:56:57,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:56:57,569 INFO L82 PathProgramCache]: Analyzing trace with hash 2020782036, now seen corresponding path program 1 times [2020-10-26 22:56:57,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:56:57,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937656733] [2020-10-26 22:56:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:56:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:57,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:57,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:58,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:00,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:00,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-26 22:57:00,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:57:00,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2553 [2020-10-26 22:57:00,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:57:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 22:57:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 22:57:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:00,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:57:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:00,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:00,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:00,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:57:00,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:57:00,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:57:00,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:00,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:57:00,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:57:00,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:57:00,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:00,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:57:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:00,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:00,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:57:00,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:57:00,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-26 22:57:00,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:00,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:57:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:57:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:57:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:00,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:57:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:00,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:01,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:01,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 22:57:01,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:57:01,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-26 22:57:01,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:01,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:57:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:57:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 22:57:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 136 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:57:01,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937656733] [2020-10-26 22:57:01,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:57:01,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:57:01,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253958692] [2020-10-26 22:57:01,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:57:01,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:57:01,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:57:01,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:57:01,225 INFO L87 Difference]: Start difference. First operand 34231 states and 38693 transitions. Second operand 6 states. [2020-10-26 22:57:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:57:21,668 INFO L93 Difference]: Finished difference Result 83891 states and 96992 transitions. [2020-10-26 22:57:21,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:57:21,671 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 294 [2020-10-26 22:57:21,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:57:21,850 INFO L225 Difference]: With dead ends: 83891 [2020-10-26 22:57:21,850 INFO L226 Difference]: Without dead ends: 49653 [2020-10-26 22:57:21,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:57:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49653 states. [2020-10-26 22:57:22,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49653 to 48696. [2020-10-26 22:57:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48696 states. [2020-10-26 22:57:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48696 states to 48696 states and 56000 transitions. [2020-10-26 22:57:22,863 INFO L78 Accepts]: Start accepts. Automaton has 48696 states and 56000 transitions. Word has length 294 [2020-10-26 22:57:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:57:22,864 INFO L481 AbstractCegarLoop]: Abstraction has 48696 states and 56000 transitions. [2020-10-26 22:57:22,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:57:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 48696 states and 56000 transitions. [2020-10-26 22:57:22,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-26 22:57:22,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:57:22,871 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:57:22,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:57:22,871 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:57:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:57:22,872 INFO L82 PathProgramCache]: Analyzing trace with hash -542301348, now seen corresponding path program 1 times [2020-10-26 22:57:22,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:57:22,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039575801] [2020-10-26 22:57:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:57:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:23,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:25,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:25,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-26 22:57:25,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:57:25,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2058 [2020-10-26 22:57:25,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:25,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:57:25,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 22:57:25,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 22:57:25,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:25,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:57:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:25,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:25,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:25,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:57:25,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:57:25,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:57:25,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:25,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:57:25,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:57:25,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:57:25,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:25,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:57:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:25,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:25,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:25,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:57:25,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:57:25,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 22:57:25,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:57:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:57:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 22:57:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:25,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:57:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:25,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:25,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 22:57:25,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:57:25,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-26 22:57:25,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:57:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:57:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 22:57:25,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 136 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:57:25,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039575801] [2020-10-26 22:57:25,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:57:25,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:57:25,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439140260] [2020-10-26 22:57:25,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:57:25,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:57:25,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:57:25,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:57:25,909 INFO L87 Difference]: Start difference. First operand 48696 states and 56000 transitions. Second operand 6 states. [2020-10-26 22:57:46,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:57:46,474 INFO L93 Difference]: Finished difference Result 111816 states and 130613 transitions. [2020-10-26 22:57:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:57:46,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 298 [2020-10-26 22:57:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:57:46,674 INFO L225 Difference]: With dead ends: 111816 [2020-10-26 22:57:46,675 INFO L226 Difference]: Without dead ends: 63121 [2020-10-26 22:57:46,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:57:47,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63121 states. [2020-10-26 22:57:48,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63121 to 62980. [2020-10-26 22:57:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62980 states. [2020-10-26 22:57:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62980 states to 62980 states and 72042 transitions. [2020-10-26 22:57:48,621 INFO L78 Accepts]: Start accepts. Automaton has 62980 states and 72042 transitions. Word has length 298 [2020-10-26 22:57:48,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:57:48,622 INFO L481 AbstractCegarLoop]: Abstraction has 62980 states and 72042 transitions. [2020-10-26 22:57:48,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:57:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 62980 states and 72042 transitions. [2020-10-26 22:57:48,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-26 22:57:48,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:57:48,652 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:48,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:57:48,652 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:57:48,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:57:48,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1556480958, now seen corresponding path program 1 times [2020-10-26 22:57:48,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:57:48,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179308188] [2020-10-26 22:57:48,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:57:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:48,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:51,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:51,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-26 22:57:51,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:57:51,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2767 [2020-10-26 22:57:51,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 22:57:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 22:57:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-26 22:57:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:51,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:57:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:51,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:51,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:57:51,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:57:51,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:57:51,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:57:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:57:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:57:51,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:51,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:57:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:51,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:51,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:51,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:57:51,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:57:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 22:57:51,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:57:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:57:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 22:57:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:52,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:57:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:52,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:52,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:52,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:57:52,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:57:52,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-26 22:57:52,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:57:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:57:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-26 22:57:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:52,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-26 22:57:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:52,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:52,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:52,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 22:57:52,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:57:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 22:57:52,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:57:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:57:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:57:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 339 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 22:57:53,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179308188] [2020-10-26 22:57:53,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:57:53,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 22:57:53,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170474815] [2020-10-26 22:57:53,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:57:53,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:57:53,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:57:53,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:57:53,349 INFO L87 Difference]: Start difference. First operand 62980 states and 72042 transitions. Second operand 9 states.