/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:40:19,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:40:19,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:40:19,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:40:19,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:40:19,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:40:19,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:40:19,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:40:19,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:40:19,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:40:19,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:40:19,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:40:19,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:40:19,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:40:19,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:40:19,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:40:19,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:40:19,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:40:19,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:40:19,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:40:19,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:40:19,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:40:19,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:40:19,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:40:19,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:40:19,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:40:19,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:40:19,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:40:19,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:40:19,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:40:19,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:40:19,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:40:19,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:40:19,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:40:19,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:40:19,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:40:19,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:40:19,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:40:19,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:40:19,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:40:19,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:40:19,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 17:40:19,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:40:19,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:40:19,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:40:19,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:40:19,307 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:40:19,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:40:19,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:40:19,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:40:19,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:40:19,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:40:19,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:40:19,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:40:19,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:40:19,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:40:19,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:40:19,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:40:19,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:40:19,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:40:19,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:40:19,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:40:19,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:40:19,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:40:19,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:40:19,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:40:19,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:40:19,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:40:19,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:40:19,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:40:19,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:40:19,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:40:19,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:40:19,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:40:19,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:40:19,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:40:19,754 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:40:19,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label11.c [2020-10-27 17:40:19,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/244d5e2af/d85ce9a2ffe540aeb590e7c733821e9f/FLAGb234be79a [2020-10-27 17:40:20,952 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:40:20,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label11.c [2020-10-27 17:40:20,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/244d5e2af/d85ce9a2ffe540aeb590e7c733821e9f/FLAGb234be79a [2020-10-27 17:40:21,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/244d5e2af/d85ce9a2ffe540aeb590e7c733821e9f [2020-10-27 17:40:21,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:40:21,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:40:21,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:40:21,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:40:21,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:40:21,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:40:21" (1/1) ... [2020-10-27 17:40:21,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@879a816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:21, skipping insertion in model container [2020-10-27 17:40:21,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:40:21" (1/1) ... [2020-10-27 17:40:21,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:40:21,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:40:22,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:40:22,814 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:40:23,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:40:23,577 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:40:23,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:23 WrapperNode [2020-10-27 17:40:23,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:40:23,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:40:23,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:40:23,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:40:23,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:23" (1/1) ... [2020-10-27 17:40:23,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:23" (1/1) ... [2020-10-27 17:40:23,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:23" (1/1) ... [2020-10-27 17:40:23,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:23" (1/1) ... [2020-10-27 17:40:23,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:23" (1/1) ... [2020-10-27 17:40:23,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:23" (1/1) ... [2020-10-27 17:40:23,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:23" (1/1) ... [2020-10-27 17:40:23,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:40:23,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:40:23,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:40:23,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:40:23,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:40:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:40:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:40:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:40:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:40:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:40:24,027 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:40:24,027 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:40:24,027 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:40:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:40:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:40:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:40:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:40:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:40:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:40:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:40:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:40:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:40:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:40:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:40:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:40:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:40:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:40:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:40:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:40:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:40:30,879 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:40:30,881 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:40:30,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:40:30 BoogieIcfgContainer [2020-10-27 17:40:30,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:40:30,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:40:30,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:40:30,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:40:30,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:40:21" (1/3) ... [2020-10-27 17:40:30,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a957768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:40:30, skipping insertion in model container [2020-10-27 17:40:30,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:23" (2/3) ... [2020-10-27 17:40:30,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a957768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:40:30, skipping insertion in model container [2020-10-27 17:40:30,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:40:30" (3/3) ... [2020-10-27 17:40:30,903 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label11.c [2020-10-27 17:40:30,921 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:40:30,928 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:40:30,942 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:40:30,988 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:40:30,989 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:40:30,989 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:40:30,989 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:40:30,989 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:40:30,989 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:40:30,989 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:40:30,990 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:40:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:40:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 17:40:31,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:31,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:40:31,044 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:31,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:31,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1005932524, now seen corresponding path program 1 times [2020-10-27 17:40:31,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:31,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985197801] [2020-10-27 17:40:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:31,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:31,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:31,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 17:40:31,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:31,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-27 17:40:31,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:40:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:40:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 17:40:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:40:32,053 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:40:32,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:32,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:32,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:32,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 17:40:32,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:32,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:32,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:32,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:40:32,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:40:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:40:32,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985197801] [2020-10-27 17:40:32,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:40:32,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:40:32,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677072672] [2020-10-27 17:40:32,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:40:32,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:32,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:40:32,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:40:32,179 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:40:32,341 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:40:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:42,390 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-27 17:40:42,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:40:42,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-27 17:40:42,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:42,422 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:40:42,423 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:40:42,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:40:42,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:40:42,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:40:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:40:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-27 17:40:42,624 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 46 [2020-10-27 17:40:42,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:42,625 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-27 17:40:42,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:40:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-27 17:40:42,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 17:40:42,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:42,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:40:42,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:40:42,636 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:42,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1926682114, now seen corresponding path program 1 times [2020-10-27 17:40:42,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:42,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175078149] [2020-10-27 17:40:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:42,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:43,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:44,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:44,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 17:40:44,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:40:44,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1599 [2020-10-27 17:40:44,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 17:40:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 17:40:44,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 17:40:44,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:44,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:44,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:44,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:44,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:40:44,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:44,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:44,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:44,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:44,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 17:40:44,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:44,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 17:40:44,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:44,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 17:40:44,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:40:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:40:44,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175078149] [2020-10-27 17:40:44,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:44,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:40:44,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399412789] [2020-10-27 17:40:44,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:40:44,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:44,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:40:44,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:40:44,618 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 5 states. [2020-10-27 17:40:55,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:55,516 INFO L93 Difference]: Finished difference Result 4670 states and 8255 transitions. [2020-10-27 17:40:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:40:55,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-27 17:40:55,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:55,536 INFO L225 Difference]: With dead ends: 4670 [2020-10-27 17:40:55,537 INFO L226 Difference]: Without dead ends: 3122 [2020-10-27 17:40:55,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:40:55,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2020-10-27 17:40:55,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3110. [2020-10-27 17:40:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-10-27 17:40:55,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4587 transitions. [2020-10-27 17:40:55,687 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4587 transitions. Word has length 115 [2020-10-27 17:40:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:55,688 INFO L481 AbstractCegarLoop]: Abstraction has 3110 states and 4587 transitions. [2020-10-27 17:40:55,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:40:55,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4587 transitions. [2020-10-27 17:40:55,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 17:40:55,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:55,691 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:40:55,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:40:55,692 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:55,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:55,692 INFO L82 PathProgramCache]: Analyzing trace with hash 215966258, now seen corresponding path program 1 times [2020-10-27 17:40:55,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:55,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634320002] [2020-10-27 17:40:55,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:55,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:56,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:56,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 17:40:56,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:40:56,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-27 17:40:56,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:56,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:56,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:40:56,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 17:40:56,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:56,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:56,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:56,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:56,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:56,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 17:40:56,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:56,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:56,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:56,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:56,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:40:56,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:56,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 17:40:56,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:56,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:40:56,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:40:56,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634320002] [2020-10-27 17:40:56,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:56,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:40:56,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811220034] [2020-10-27 17:40:56,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:40:56,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:56,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:40:56,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:40:56,462 INFO L87 Difference]: Start difference. First operand 3110 states and 4587 transitions. Second operand 5 states. [2020-10-27 17:41:04,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:41:04,568 INFO L93 Difference]: Finished difference Result 6273 states and 9261 transitions. [2020-10-27 17:41:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:41:04,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 17:41:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:41:04,598 INFO L225 Difference]: With dead ends: 6273 [2020-10-27 17:41:04,598 INFO L226 Difference]: Without dead ends: 3122 [2020-10-27 17:41:04,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:41:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2020-10-27 17:41:04,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3110. [2020-10-27 17:41:04,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-10-27 17:41:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4335 transitions. [2020-10-27 17:41:04,691 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4335 transitions. Word has length 121 [2020-10-27 17:41:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:41:04,692 INFO L481 AbstractCegarLoop]: Abstraction has 3110 states and 4335 transitions. [2020-10-27 17:41:04,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:41:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4335 transitions. [2020-10-27 17:41:04,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 17:41:04,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:41:04,695 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:41:04,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:41:04,696 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:41:04,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:41:04,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1130242148, now seen corresponding path program 1 times [2020-10-27 17:41:04,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:41:04,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648361913] [2020-10-27 17:41:04,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:41:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:04,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:04,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:05,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:05,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 17:41:05,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:41:05,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 827 [2020-10-27 17:41:05,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:41:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 17:41:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 17:41:05,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:05,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:41:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:05,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:05,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:41:05,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:05,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 17:41:05,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:05,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:05,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:41:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:05,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:05,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:05,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 17:41:05,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:05,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 17:41:05,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:41:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 17:41:05,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:41:05,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648361913] [2020-10-27 17:41:05,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:41:05,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:41:05,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879673082] [2020-10-27 17:41:05,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:41:05,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:41:05,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:41:05,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:41:05,852 INFO L87 Difference]: Start difference. First operand 3110 states and 4335 transitions. Second operand 5 states. [2020-10-27 17:41:17,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:41:17,010 INFO L93 Difference]: Finished difference Result 9339 states and 13224 transitions. [2020-10-27 17:41:17,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:41:17,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 17:41:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:41:17,054 INFO L225 Difference]: With dead ends: 9339 [2020-10-27 17:41:17,054 INFO L226 Difference]: Without dead ends: 6235 [2020-10-27 17:41:17,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:41:17,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6235 states. [2020-10-27 17:41:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6235 to 6219. [2020-10-27 17:41:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6219 states. [2020-10-27 17:41:17,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 8253 transitions. [2020-10-27 17:41:17,251 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 8253 transitions. Word has length 122 [2020-10-27 17:41:17,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:41:17,253 INFO L481 AbstractCegarLoop]: Abstraction has 6219 states and 8253 transitions. [2020-10-27 17:41:17,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:41:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 8253 transitions. [2020-10-27 17:41:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 17:41:17,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:41:17,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:41:17,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:41:17,259 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:41:17,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:41:17,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1007667322, now seen corresponding path program 1 times [2020-10-27 17:41:17,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:41:17,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365488657] [2020-10-27 17:41:17,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:41:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:17,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:18,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:18,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 17:41:18,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:41:18,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-10-27 17:41:18,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:41:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 17:41:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 17:41:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:18,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:41:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:18,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:18,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:41:18,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:18,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:41:18,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:18,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:18,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:41:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:18,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:18,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:18,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 17:41:18,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:18,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 17:41:18,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:18,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:41:18,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:18,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 17:41:18,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:41:18,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365488657] [2020-10-27 17:41:18,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:41:18,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:41:18,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613934213] [2020-10-27 17:41:18,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:41:18,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:41:18,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:41:18,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:41:18,422 INFO L87 Difference]: Start difference. First operand 6219 states and 8253 transitions. Second operand 5 states. [2020-10-27 17:41:18,958 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:41:29,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:41:29,961 INFO L93 Difference]: Finished difference Result 15554 states and 21455 transitions. [2020-10-27 17:41:29,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:41:29,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 17:41:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:41:30,008 INFO L225 Difference]: With dead ends: 15554 [2020-10-27 17:41:30,008 INFO L226 Difference]: Without dead ends: 9341 [2020-10-27 17:41:30,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:41:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2020-10-27 17:41:30,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 9333. [2020-10-27 17:41:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9333 states. [2020-10-27 17:41:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9333 states to 9333 states and 12396 transitions. [2020-10-27 17:41:30,286 INFO L78 Accepts]: Start accepts. Automaton has 9333 states and 12396 transitions. Word has length 149 [2020-10-27 17:41:30,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:41:30,286 INFO L481 AbstractCegarLoop]: Abstraction has 9333 states and 12396 transitions. [2020-10-27 17:41:30,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:41:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 9333 states and 12396 transitions. [2020-10-27 17:41:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-27 17:41:30,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:41:30,292 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:41:30,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:41:30,292 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:41:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:41:30,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1111327102, now seen corresponding path program 1 times [2020-10-27 17:41:30,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:41:30,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407252561] [2020-10-27 17:41:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:41:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:30,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:31,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:31,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-27 17:41:31,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:41:31,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1565 [2020-10-27 17:41:31,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:41:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-27 17:41:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 17:41:31,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:32,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:41:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:32,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:32,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:32,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:41:32,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:32,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:41:32,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:32,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:32,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:32,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:32,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:32,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:41:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:32,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:32,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 17:41:32,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:32,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 17:41:32,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:41:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 17:41:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:41:32,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407252561] [2020-10-27 17:41:32,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:41:32,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:41:32,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849490808] [2020-10-27 17:41:32,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:41:32,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:41:32,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:41:32,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:41:32,372 INFO L87 Difference]: Start difference. First operand 9333 states and 12396 transitions. Second operand 6 states. [2020-10-27 17:41:49,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:41:49,454 INFO L93 Difference]: Finished difference Result 37268 states and 51703 transitions. [2020-10-27 17:41:49,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:41:49,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2020-10-27 17:41:49,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:41:49,556 INFO L225 Difference]: With dead ends: 37268 [2020-10-27 17:41:49,556 INFO L226 Difference]: Without dead ends: 27941 [2020-10-27 17:41:49,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:41:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27941 states. [2020-10-27 17:41:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27941 to 27933. [2020-10-27 17:41:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27933 states. [2020-10-27 17:41:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27933 states to 27933 states and 36058 transitions. [2020-10-27 17:41:50,309 INFO L78 Accepts]: Start accepts. Automaton has 27933 states and 36058 transitions. Word has length 179 [2020-10-27 17:41:50,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:41:50,309 INFO L481 AbstractCegarLoop]: Abstraction has 27933 states and 36058 transitions. [2020-10-27 17:41:50,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:41:50,310 INFO L276 IsEmpty]: Start isEmpty. Operand 27933 states and 36058 transitions. [2020-10-27 17:41:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-27 17:41:50,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:41:50,335 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:41:50,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:41:50,336 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:41:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:41:50,337 INFO L82 PathProgramCache]: Analyzing trace with hash 361895060, now seen corresponding path program 1 times [2020-10-27 17:41:50,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:41:50,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977285163] [2020-10-27 17:41:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:41:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:50,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:52,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:53,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:55,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:55,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-27 17:41:55,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:41:55,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 17:41:55,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:41:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 346 [2020-10-27 17:41:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 17:41:55,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:55,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:41:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:55,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:55,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:55,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:41:55,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:55,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:41:55,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:55,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:55,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:41:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:55,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:55,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:55,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 17:41:55,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 17:41:55,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:55,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:55,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 17:41:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:56,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:56,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 17:41:56,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:56,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 17:41:56,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:41:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-27 17:41:56,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-27 17:41:56,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977285163] [2020-10-27 17:41:56,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:41:56,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:41:56,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165555914] [2020-10-27 17:41:56,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:41:56,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:41:56,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:41:56,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:41:56,585 INFO L87 Difference]: Start difference. First operand 27933 states and 36058 transitions. Second operand 5 states. [2020-10-27 17:42:04,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:42:04,926 INFO L93 Difference]: Finished difference Result 55884 states and 72225 transitions. [2020-10-27 17:42:04,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:42:04,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 380 [2020-10-27 17:42:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:42:05,052 INFO L225 Difference]: With dead ends: 55884 [2020-10-27 17:42:05,052 INFO L226 Difference]: Without dead ends: 27941 [2020-10-27 17:42:05,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:42:05,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27941 states. [2020-10-27 17:42:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27941 to 27933. [2020-10-27 17:42:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27933 states. [2020-10-27 17:42:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27933 states to 27933 states and 36046 transitions. [2020-10-27 17:42:05,969 INFO L78 Accepts]: Start accepts. Automaton has 27933 states and 36046 transitions. Word has length 380 [2020-10-27 17:42:05,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:42:05,970 INFO L481 AbstractCegarLoop]: Abstraction has 27933 states and 36046 transitions. [2020-10-27 17:42:05,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:42:05,970 INFO L276 IsEmpty]: Start isEmpty. Operand 27933 states and 36046 transitions. [2020-10-27 17:42:06,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2020-10-27 17:42:06,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:06,050 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:42:06,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:42:06,050 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:06,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:06,051 INFO L82 PathProgramCache]: Analyzing trace with hash -528334711, now seen corresponding path program 1 times [2020-10-27 17:42:06,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:06,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171048025] [2020-10-27 17:42:06,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:06,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:11,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:11,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:11,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 759 [2020-10-27 17:42:11,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:42:11,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5252 [2020-10-27 17:42:11,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:42:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 705 [2020-10-27 17:42:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 17:42:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:42:11,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:11,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:11,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:11,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:11,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 17:42:11,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:11,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:11,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:11,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:11,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:42:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:11,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:11,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:11,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 17:42:11,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 17:42:11,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:11,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:11,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 17:42:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:12,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:12,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:12,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-27 17:42:12,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:12,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-27 17:42:12,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 569 [2020-10-27 17:42:12,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:12,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:42:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:12,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:13,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:13,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-27 17:42:13,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:13,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-27 17:42:13,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:13,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:13,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:13,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 284 [2020-10-27 17:42:13,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:13,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:42:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:13,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:13,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:13,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 17:42:13,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 17:42:13,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 17:42:13,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:14,070 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-27 17:42:14,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171048025] [2020-10-27 17:42:14,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:42:14,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:42:14,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430003922] [2020-10-27 17:42:14,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:42:14,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:14,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:42:14,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:42:14,080 INFO L87 Difference]: Start difference. First operand 27933 states and 36046 transitions. Second operand 5 states. [2020-10-27 17:42:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:42:26,568 INFO L93 Difference]: Finished difference Result 68277 states and 90305 transitions. [2020-10-27 17:42:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:42:26,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 741 [2020-10-27 17:42:26,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:42:26,726 INFO L225 Difference]: With dead ends: 68277 [2020-10-27 17:42:26,726 INFO L226 Difference]: Without dead ends: 40350 [2020-10-27 17:42:26,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:42:26,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40350 states. [2020-10-27 17:42:27,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40350 to 40342. [2020-10-27 17:42:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40342 states. [2020-10-27 17:42:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40342 states to 40342 states and 52311 transitions. [2020-10-27 17:42:27,989 INFO L78 Accepts]: Start accepts. Automaton has 40342 states and 52311 transitions. Word has length 741 [2020-10-27 17:42:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:42:27,991 INFO L481 AbstractCegarLoop]: Abstraction has 40342 states and 52311 transitions. [2020-10-27 17:42:27,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:42:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 40342 states and 52311 transitions. [2020-10-27 17:42:28,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2020-10-27 17:42:28,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:28,147 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:42:28,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:42:28,148 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:28,149 INFO L82 PathProgramCache]: Analyzing trace with hash -363384002, now seen corresponding path program 1 times [2020-10-27 17:42:28,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:28,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756695152] [2020-10-27 17:42:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:28,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:33,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:33,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 913 [2020-10-27 17:42:33,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:42:33,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 17:42:33,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 17:42:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-27 17:42:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 565 [2020-10-27 17:42:33,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:33,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:33,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:33,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:33,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:33,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:33,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:42:33,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:33,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:33,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:33,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:33,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:33,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:42:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:33,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:33,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:33,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 17:42:33,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:33,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 17:42:33,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:33,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:33,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:33,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:33,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:33,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 17:42:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:33,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:33,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:33,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 17:42:33,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:33,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 17:42:33,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 17:42:33,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:33,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-27 17:42:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:34,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:35,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:39,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:39,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-27 17:42:39,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:42:39,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4945 [2020-10-27 17:42:39,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:42:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:42:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 696 [2020-10-27 17:42:39,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:39,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:42:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:39,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:40,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:40,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-27 17:42:40,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:40,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 804 [2020-10-27 17:42:40,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:42:40,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:42:40,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 408 [2020-10-27 17:42:40,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:40,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:42:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:40,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:40,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:40,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-27 17:42:40,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:40,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-27 17:42:40,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:40,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:42:40,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:42:40,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 17:42:40,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 17:42:42,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756695152] [2020-10-27 17:42:42,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:42:42,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:42:42,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400727921] [2020-10-27 17:42:42,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:42:42,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:42,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:42:42,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:42:42,094 INFO L87 Difference]: Start difference. First operand 40342 states and 52311 transitions. Second operand 8 states. [2020-10-27 17:42:43,670 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-27 17:43:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:00,407 INFO L93 Difference]: Finished difference Result 81947 states and 108606 transitions. [2020-10-27 17:43:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:43:00,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 893 [2020-10-27 17:43:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:00,559 INFO L225 Difference]: With dead ends: 81947 [2020-10-27 17:43:00,559 INFO L226 Difference]: Without dead ends: 41611 [2020-10-27 17:43:00,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-27 17:43:00,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41611 states. [2020-10-27 17:43:01,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41611 to 41531. [2020-10-27 17:43:01,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41531 states. [2020-10-27 17:43:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41531 states to 41531 states and 55299 transitions. [2020-10-27 17:43:01,552 INFO L78 Accepts]: Start accepts. Automaton has 41531 states and 55299 transitions. Word has length 893 [2020-10-27 17:43:01,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:01,554 INFO L481 AbstractCegarLoop]: Abstraction has 41531 states and 55299 transitions. [2020-10-27 17:43:01,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:43:01,554 INFO L276 IsEmpty]: Start isEmpty. Operand 41531 states and 55299 transitions. [2020-10-27 17:43:01,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2020-10-27 17:43:01,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:01,644 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:43:01,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:43:01,644 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:01,645 INFO L82 PathProgramCache]: Analyzing trace with hash -620113838, now seen corresponding path program 1 times [2020-10-27 17:43:01,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:01,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892185750] [2020-10-27 17:43:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:01,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:02,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:03,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:06,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:06,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 931 [2020-10-27 17:43:06,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:43:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-27 17:43:06,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 17:43:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 17:43:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 620 [2020-10-27 17:43:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:07,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:07,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:07,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:07,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:43:07,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:07,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:07,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:07,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:07,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 17:43:07,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:07,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 17:43:07,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:07,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:07,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 17:43:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:07,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:07,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:07,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 17:43:07,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 17:43:07,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:43:07,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:43:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 17:43:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:07,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:08,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:12,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:12,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:12,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-27 17:43:12,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:43:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5172 [2020-10-27 17:43:12,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 17:43:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:43:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 696 [2020-10-27 17:43:12,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:14,204 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 29 [2020-10-27 17:43:14,583 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 57 [2020-10-27 17:43:14,979 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 62 [2020-10-27 17:43:15,416 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 60 [2020-10-27 17:43:15,609 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-10-27 17:43:15,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:43:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:16,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:18,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:18,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-27 17:43:18,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:43:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2818 [2020-10-27 17:43:18,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:43:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:43:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 408 [2020-10-27 17:43:18,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:43:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:18,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:19,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:19,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-27 17:43:19,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:19,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-27 17:43:19,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:43:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-27 17:43:19,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-27 17:43:26,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892185750] [2020-10-27 17:43:26,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:26,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 17:43:26,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658784345] [2020-10-27 17:43:26,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 17:43:26,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:26,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 17:43:26,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-27 17:43:26,991 INFO L87 Difference]: Start difference. First operand 41531 states and 55299 transitions. Second operand 15 states. [2020-10-27 17:43:27,351 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-10-27 17:43:30,770 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-27 17:43:31,134 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-10-27 17:43:31,562 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 88 [2020-10-27 17:43:32,582 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 93 [2020-10-27 17:43:34,614 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 99 [2020-10-27 17:43:35,677 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 102 [2020-10-27 17:43:42,038 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 90 [2020-10-27 17:43:44,006 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 17:43:44,601 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 96 [2020-10-27 17:43:45,717 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 98 [2020-10-27 17:43:53,471 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 78 [2020-10-27 17:43:54,630 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82