/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem13_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:15:22,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:15:22,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:15:22,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:15:22,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:15:22,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:15:22,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:15:22,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:15:22,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:15:22,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:15:22,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:15:22,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:15:22,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:15:22,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:15:22,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:15:22,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:15:22,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:15:22,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:15:22,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:15:22,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:15:22,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:15:22,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:15:22,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:15:22,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:15:22,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:15:22,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:15:22,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:15:22,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:15:22,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:15:22,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:15:22,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:15:22,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:15:22,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:15:22,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:15:22,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:15:22,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:15:22,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:15:22,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:15:22,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:15:22,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:15:22,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:15:22,360 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 [2020-10-29 07:15:22,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:15:22,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:15:22,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:15:22,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:15:22,414 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:15:22,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:15:22,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:15:22,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:15:22,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:15:22,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:15:22,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:15:22,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:15:22,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:15:22,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:15:22,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:15:22,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:15:22,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:15:22,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:15:22,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:15:22,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:15:22,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:15:22,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:15:22,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:15:22,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:15:22,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:15:22,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:15:22,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:15:22,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:15:22,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:15:22,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:15:22,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:15:22,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:15:22,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:15:22,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:15:22,915 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:15:22,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label23.c [2020-10-29 07:15:23,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee432a989/d1481440dd764898b7001e3e5eb72a45/FLAG0f376a148 [2020-10-29 07:15:24,160 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:15:24,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label23.c [2020-10-29 07:15:24,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee432a989/d1481440dd764898b7001e3e5eb72a45/FLAG0f376a148 [2020-10-29 07:15:24,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee432a989/d1481440dd764898b7001e3e5eb72a45 [2020-10-29 07:15:24,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:15:24,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:15:24,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:15:24,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:15:24,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:15:24,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:15:24" (1/1) ... [2020-10-29 07:15:24,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ca7241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:15:24, skipping insertion in model container [2020-10-29 07:15:24,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:15:24" (1/1) ... [2020-10-29 07:15:24,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:15:24,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:15:26,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:15:26,521 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:15:27,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:15:27,275 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:15:27,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:15:27 WrapperNode [2020-10-29 07:15:27,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:15:27,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:15:27,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:15:27,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:15:27,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:15:27" (1/1) ... [2020-10-29 07:15:27,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:15:27" (1/1) ... [2020-10-29 07:15:27,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:15:27" (1/1) ... [2020-10-29 07:15:27,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:15:27" (1/1) ... [2020-10-29 07:15:27,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:15:27" (1/1) ... [2020-10-29 07:15:27,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:15:27" (1/1) ... [2020-10-29 07:15:27,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:15:27" (1/1) ... [2020-10-29 07:15:27,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:15:27,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:15:27,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:15:27,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:15:27,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:15:27" (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 [2020-10-29 07:15:27,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:15:27,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:15:27,901 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:15:27,901 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:15:27,901 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:15:27,902 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:15:27,902 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:15:27,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:15:27,902 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:15:27,902 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:15:27,902 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:15:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:15:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:15:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:15:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:15:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:15:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:15:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:15:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:15:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:15:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:15:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:15:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:15:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:15:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:15:39,055 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:15:39,055 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:15:39,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:15:39 BoogieIcfgContainer [2020-10-29 07:15:39,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:15:39,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:15:39,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:15:39,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:15:39,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:15:24" (1/3) ... [2020-10-29 07:15:39,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205c84f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:15:39, skipping insertion in model container [2020-10-29 07:15:39,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:15:27" (2/3) ... [2020-10-29 07:15:39,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205c84f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:15:39, skipping insertion in model container [2020-10-29 07:15:39,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:15:39" (3/3) ... [2020-10-29 07:15:39,076 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label23.c [2020-10-29 07:15:39,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:15:39,096 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:15:39,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:15:39,147 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:15:39,148 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:15:39,148 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:15:39,148 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:15:39,148 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:15:39,148 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:15:39,148 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:15:39,149 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:15:39,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:15:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 07:15:39,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:15:39,204 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] [2020-10-29 07:15:39,205 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:15:39,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:15:39,219 INFO L82 PathProgramCache]: Analyzing trace with hash -880097678, now seen corresponding path program 1 times [2020-10-29 07:15:39,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:15:39,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233221589] [2020-10-29 07:15:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:15:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:39,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:39,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:39,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 07:15:39,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-10-29 07:15:39,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:39,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:15:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:15:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 07:15:40,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:15:40,245 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:15:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:15:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:40,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:40,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:40,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:15:40,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 07:15:40,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:40,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:15:40,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:15:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:15:40,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233221589] [2020-10-29 07:15:40,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:15:40,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:15:40,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574919136] [2020-10-29 07:15:40,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:15:40,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:15:40,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:15:40,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:15:40,381 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:16:00,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:16:00,855 INFO L93 Difference]: Finished difference Result 3247 states and 5953 transitions. [2020-10-29 07:16:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:16:00,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-29 07:16:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:16:00,895 INFO L225 Difference]: With dead ends: 3247 [2020-10-29 07:16:00,896 INFO L226 Difference]: Without dead ends: 2045 [2020-10-29 07:16:00,907 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 [2020-10-29 07:16:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-10-29 07:16:01,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1988. [2020-10-29 07:16:01,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-29 07:16:01,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3533 transitions. [2020-10-29 07:16:01,117 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3533 transitions. Word has length 20 [2020-10-29 07:16:01,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:16:01,117 INFO L481 AbstractCegarLoop]: Abstraction has 1988 states and 3533 transitions. [2020-10-29 07:16:01,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:16:01,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3533 transitions. [2020-10-29 07:16:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 07:16:01,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:16:01,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:16:01,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:16:01,124 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:16:01,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:16:01,125 INFO L82 PathProgramCache]: Analyzing trace with hash -900560970, now seen corresponding path program 1 times [2020-10-29 07:16:01,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:16:01,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470263503] [2020-10-29 07:16:01,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:16:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:01,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:02,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:16:02,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:16:02,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1352 [2020-10-29 07:16:02,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:02,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:16:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:16:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:16:02,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:16:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:02,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:02,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:02,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:16:02,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:02,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:16:02,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:02,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:16:02,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:16:02,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:16:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:02,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:02,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:02,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:16:02,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:02,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 07:16:02,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:02,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:16:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:16:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:16:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:16:03,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470263503] [2020-10-29 07:16:03,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:16:03,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:16:03,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461037977] [2020-10-29 07:16:03,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:16:03,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:16:03,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:16:03,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:16:03,093 INFO L87 Difference]: Start difference. First operand 1988 states and 3533 transitions. Second operand 7 states. [2020-10-29 07:16:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:16:27,968 INFO L93 Difference]: Finished difference Result 5733 states and 10344 transitions. [2020-10-29 07:16:27,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:16:27,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-29 07:16:27,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:16:28,001 INFO L225 Difference]: With dead ends: 5733 [2020-10-29 07:16:28,001 INFO L226 Difference]: Without dead ends: 3751 [2020-10-29 07:16:28,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:16:28,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2020-10-29 07:16:28,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3678. [2020-10-29 07:16:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3678 states. [2020-10-29 07:16:28,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 5734 transitions. [2020-10-29 07:16:28,151 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 5734 transitions. Word has length 89 [2020-10-29 07:16:28,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:16:28,152 INFO L481 AbstractCegarLoop]: Abstraction has 3678 states and 5734 transitions. [2020-10-29 07:16:28,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:16:28,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 5734 transitions. [2020-10-29 07:16:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 07:16:28,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:16:28,157 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:16:28,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:16:28,157 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:16:28,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:16:28,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1659863030, now seen corresponding path program 1 times [2020-10-29 07:16:28,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:16:28,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367349746] [2020-10-29 07:16:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:16:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:28,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:29,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:29,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 07:16:29,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:16:29,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-10-29 07:16:29,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:29,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:16:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:16:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:16:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:16:29,502 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:16:29,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:16:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:29,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:29,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:29,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:16:29,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:16:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:29,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:16:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:29,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:16:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:29,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:29,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:29,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:16:29,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:29,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 07:16:29,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:29,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:16:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:16:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:16:29,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:16:30,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367349746] [2020-10-29 07:16:30,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:16:30,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:16:30,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943943525] [2020-10-29 07:16:30,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:16:30,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:16:30,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:16:30,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:16:30,095 INFO L87 Difference]: Start difference. First operand 3678 states and 5734 transitions. Second operand 7 states. [2020-10-29 07:16:59,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:16:59,184 INFO L93 Difference]: Finished difference Result 11068 states and 18114 transitions. [2020-10-29 07:16:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:16:59,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-29 07:16:59,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:16:59,249 INFO L225 Difference]: With dead ends: 11068 [2020-10-29 07:16:59,250 INFO L226 Difference]: Without dead ends: 7396 [2020-10-29 07:16:59,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:16:59,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2020-10-29 07:16:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 7206. [2020-10-29 07:16:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7206 states. [2020-10-29 07:16:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7206 states to 7206 states and 10355 transitions. [2020-10-29 07:16:59,600 INFO L78 Accepts]: Start accepts. Automaton has 7206 states and 10355 transitions. Word has length 95 [2020-10-29 07:16:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:16:59,601 INFO L481 AbstractCegarLoop]: Abstraction has 7206 states and 10355 transitions. [2020-10-29 07:16:59,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:16:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 7206 states and 10355 transitions. [2020-10-29 07:16:59,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 07:16:59,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:16:59,604 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:16:59,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:16:59,605 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:16:59,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:16:59,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1463398994, now seen corresponding path program 1 times [2020-10-29 07:16:59,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:16:59,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975798309] [2020-10-29 07:16:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:16:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:59,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:01,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:01,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 07:17:01,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:17:01,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1344 [2020-10-29 07:17:01,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:01,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:17:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:17:01,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:17:01,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:01,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:17:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:01,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:01,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:17:01,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:17:01,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:01,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:01,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:17:01,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:01,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:17:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:01,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:01,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:17:01,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:01,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 07:17:01,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:01,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:01,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:17:01,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:17:01,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:17:01,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:17:01,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975798309] [2020-10-29 07:17:01,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:17:01,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:17:01,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749798303] [2020-10-29 07:17:01,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:17:01,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:17:01,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:17:01,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:17:01,692 INFO L87 Difference]: Start difference. First operand 7206 states and 10355 transitions. Second operand 7 states. [2020-10-29 07:17:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:17:28,739 INFO L93 Difference]: Finished difference Result 21839 states and 32760 transitions. [2020-10-29 07:17:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:17:28,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-29 07:17:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:17:28,830 INFO L225 Difference]: With dead ends: 21839 [2020-10-29 07:17:28,831 INFO L226 Difference]: Without dead ends: 14639 [2020-10-29 07:17:28,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:17:28,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14639 states. [2020-10-29 07:17:29,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14639 to 14329. [2020-10-29 07:17:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14329 states. [2020-10-29 07:17:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14329 states to 14329 states and 19203 transitions. [2020-10-29 07:17:29,400 INFO L78 Accepts]: Start accepts. Automaton has 14329 states and 19203 transitions. Word has length 125 [2020-10-29 07:17:29,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:17:29,403 INFO L481 AbstractCegarLoop]: Abstraction has 14329 states and 19203 transitions. [2020-10-29 07:17:29,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:17:29,404 INFO L276 IsEmpty]: Start isEmpty. Operand 14329 states and 19203 transitions. [2020-10-29 07:17:29,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 07:17:29,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:17:29,424 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:17:29,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:17:29,425 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:17:29,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:17:29,426 INFO L82 PathProgramCache]: Analyzing trace with hash 296444347, now seen corresponding path program 1 times [2020-10-29 07:17:29,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:17:29,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44182944] [2020-10-29 07:17:29,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:17:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:29,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:29,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:30,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:31,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:31,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 07:17:31,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:17:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2359 [2020-10-29 07:17:31,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:31,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:17:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:17:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 07:17:31,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:17:32,033 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:17:32,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:17:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:32,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:32,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:32,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:17:32,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:17:32,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:32,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:17:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:17:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:17:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:32,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:32,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:32,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:32,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:17:32,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:17:32,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-29 07:17:32,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:32,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:32,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:17:32,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:17:32,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:17:32,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:17:32,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44182944] [2020-10-29 07:17:32,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:17:32,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:17:32,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773540385] [2020-10-29 07:17:32,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:17:32,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:17:32,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:17:32,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:17:32,829 INFO L87 Difference]: Start difference. First operand 14329 states and 19203 transitions. Second operand 7 states. [2020-10-29 07:17:33,003 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:17:35,427 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 07:18:04,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:18:04,744 INFO L93 Difference]: Finished difference Result 35076 states and 47210 transitions. [2020-10-29 07:18:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:18:04,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-29 07:18:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:18:04,858 INFO L225 Difference]: With dead ends: 35076 [2020-10-29 07:18:04,859 INFO L226 Difference]: Without dead ends: 20753 [2020-10-29 07:18:04,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:18:04,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20753 states. [2020-10-29 07:18:05,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20753 to 20326. [2020-10-29 07:18:05,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20326 states. [2020-10-29 07:18:05,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20326 states to 20326 states and 26312 transitions. [2020-10-29 07:18:05,487 INFO L78 Accepts]: Start accepts. Automaton has 20326 states and 26312 transitions. Word has length 140 [2020-10-29 07:18:05,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:18:05,487 INFO L481 AbstractCegarLoop]: Abstraction has 20326 states and 26312 transitions. [2020-10-29 07:18:05,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:18:05,488 INFO L276 IsEmpty]: Start isEmpty. Operand 20326 states and 26312 transitions. [2020-10-29 07:18:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-29 07:18:05,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:05,494 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:18:05,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:18:05,494 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:05,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:05,495 INFO L82 PathProgramCache]: Analyzing trace with hash -491819647, now seen corresponding path program 1 times [2020-10-29 07:18:05,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:05,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935747343] [2020-10-29 07:18:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:05,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:05,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:07,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:10,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:10,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-29 07:18:10,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:18:10,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4474 [2020-10-29 07:18:10,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:10,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:10,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:18:10,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:18:10,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-29 07:18:10,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:10,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:18:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:10,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:10,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:10,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:18:10,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:10,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:18:10,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:10,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:18:10,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:10,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:18:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:10,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:10,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:18:10,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:18:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-29 07:18:10,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:10,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:18:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:10,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:18:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:10,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:11,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:11,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:18:11,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:18:11,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-29 07:18:11,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:11,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:11,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:11,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:11,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:18:11,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:18:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 07:18:11,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935747343] [2020-10-29 07:18:11,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:18:11,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:18:11,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918963980] [2020-10-29 07:18:11,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:18:11,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:18:11,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:18:11,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:18:11,344 INFO L87 Difference]: Start difference. First operand 20326 states and 26312 transitions. Second operand 7 states. [2020-10-29 07:18:11,548 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:18:12,192 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:18:12,756 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-29 07:18:14,566 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 07:19:00,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:19:00,632 INFO L93 Difference]: Finished difference Result 57052 states and 78865 transitions. [2020-10-29 07:19:00,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:19:00,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-29 07:19:00,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:19:00,825 INFO L225 Difference]: With dead ends: 57052 [2020-10-29 07:19:00,825 INFO L226 Difference]: Without dead ends: 42478 [2020-10-29 07:19:00,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:19:00,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42478 states. [2020-10-29 07:19:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42478 to 32664. [2020-10-29 07:19:01,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32664 states. [2020-10-29 07:19:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32664 states to 32664 states and 44001 transitions. [2020-10-29 07:19:02,025 INFO L78 Accepts]: Start accepts. Automaton has 32664 states and 44001 transitions. Word has length 242 [2020-10-29 07:19:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:19:02,026 INFO L481 AbstractCegarLoop]: Abstraction has 32664 states and 44001 transitions. [2020-10-29 07:19:02,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:19:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 32664 states and 44001 transitions. [2020-10-29 07:19:02,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-29 07:19:02,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:19:02,036 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 07:19:02,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:19:02,036 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:19:02,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:19:02,037 INFO L82 PathProgramCache]: Analyzing trace with hash 17189176, now seen corresponding path program 1 times [2020-10-29 07:19:02,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:19:02,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74138692] [2020-10-29 07:19:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:19:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:02,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:02,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:02,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:06,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:06,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:07,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:07,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-29 07:19:07,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:19:07,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 07:19:07,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:07,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:07,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:19:07,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:19:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 07:19:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:07,414 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:19:07,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:19:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:07,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:07,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:07,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:19:07,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:07,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:19:07,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:07,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:19:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:19:07,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:19:07,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:19:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:07,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:07,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:07,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:19:07,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:07,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:19:07,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:07,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:07,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:07,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:07,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:19:07,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:07,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:19:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:07,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:08,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:08,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 07:19:08,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:19:08,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-29 07:19:08,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:08,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:08,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:08,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 07:19:08,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:19:08,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-29 07:19:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:08,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:08,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:08,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:19:08,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:08,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 07:19:08,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:08,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:19:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:19:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:19:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 168 proven. 4 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-29 07:19:08,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74138692] [2020-10-29 07:19:08,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:19:08,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:19:08,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99597248] [2020-10-29 07:19:08,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:19:08,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:19:08,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:19:08,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:19:08,464 INFO L87 Difference]: Start difference. First operand 32664 states and 44001 transitions. Second operand 7 states. [2020-10-29 07:19:08,615 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67