/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/Problem12_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:02:20,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:02:20,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:02:20,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:02:20,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:02:20,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:02:20,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:02:20,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:02:20,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:02:20,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:02:20,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:02:20,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:02:20,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:02:20,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:02:20,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:02:20,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:02:20,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:02:20,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:02:20,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:02:20,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:02:20,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:02:20,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:02:20,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:02:20,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:02:20,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:02:20,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:02:20,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:02:20,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:02:20,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:02:20,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:02:20,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:02:20,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:02:20,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:02:20,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:02:20,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:02:20,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:02:20,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:02:20,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:02:20,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:02:20,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:02:20,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:02:20,308 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 07:02:20,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:02:20,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:02:20,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:02:20,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:02:20,351 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:02:20,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:02:20,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:02:20,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:02:20,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:02:20,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:02:20,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:02:20,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:02:20,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:02:20,352 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:02:20,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:02:20,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:02:20,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:02:20,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:02:20,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:02:20,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:02:20,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:02:20,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:02:20,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:02:20,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:02:20,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:02:20,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:02:20,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:02:20,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:02:20,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:02:20,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:02:20,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:02:20,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:02:20,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:02:20,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:02:20,785 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:02:20,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label35.c [2020-10-29 07:02:20,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3221e08c9/fe11602149ae4cfdbffdde99eee267ad/FLAG1abdf2777 [2020-10-29 07:02:21,947 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:02:21,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label35.c [2020-10-29 07:02:21,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3221e08c9/fe11602149ae4cfdbffdde99eee267ad/FLAG1abdf2777 [2020-10-29 07:02:22,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3221e08c9/fe11602149ae4cfdbffdde99eee267ad [2020-10-29 07:02:22,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:02:22,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:02:22,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:02:22,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:02:22,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:02:22,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:02:22" (1/1) ... [2020-10-29 07:02:22,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc40e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:02:22, skipping insertion in model container [2020-10-29 07:02:22,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:02:22" (1/1) ... [2020-10-29 07:02:22,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:02:22,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:02:24,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:02:24,127 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:02:24,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:02:24,944 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:02:24,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:02:24 WrapperNode [2020-10-29 07:02:24,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:02:24,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:02:24,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:02:24,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:02:25,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:02:24" (1/1) ... [2020-10-29 07:02:25,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:02:24" (1/1) ... [2020-10-29 07:02:25,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:02:24" (1/1) ... [2020-10-29 07:02:25,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:02:24" (1/1) ... [2020-10-29 07:02:25,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:02:24" (1/1) ... [2020-10-29 07:02:25,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:02:24" (1/1) ... [2020-10-29 07:02:25,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:02:24" (1/1) ... [2020-10-29 07:02:25,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:02:25,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:02:25,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:02:25,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:02:25,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:02:24" (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 07:02:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:02:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:02:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:02:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:02:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:02:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:02:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:02:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:02:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:02:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:02:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:02:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:02:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:02:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:02:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:02:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:02:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:02:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:02:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:02:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:02:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:02:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:02:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:02:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:02:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:02:30,764 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:02:30,765 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:02:30,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:02:30 BoogieIcfgContainer [2020-10-29 07:02:30,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:02:30,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:02:30,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:02:30,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:02:30,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:02:22" (1/3) ... [2020-10-29 07:02:30,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286ef50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:02:30, skipping insertion in model container [2020-10-29 07:02:30,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:02:24" (2/3) ... [2020-10-29 07:02:30,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286ef50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:02:30, skipping insertion in model container [2020-10-29 07:02:30,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:02:30" (3/3) ... [2020-10-29 07:02:30,781 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label35.c [2020-10-29 07:02:30,796 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:02:30,802 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:02:30,817 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:02:30,857 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:02:30,858 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:02:30,858 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:02:30,858 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:02:30,858 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:02:30,858 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:02:30,858 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:02:30,859 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:02:30,896 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:02:30,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 07:02:30,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:30,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:02:30,903 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:30,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:30,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1638571924, now seen corresponding path program 1 times [2020-10-29 07:02:30,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:30,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216501138] [2020-10-29 07:02:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:31,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:31,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:31,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 07:02:31,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:31,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-29 07:02:31,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:31,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:02:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:02:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 07:02:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:02:31,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:31,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:31,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:31,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:02:31,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:31,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:02:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:31,918 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 07:02:31,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216501138] [2020-10-29 07:02:31,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:02:31,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:02:31,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439554725] [2020-10-29 07:02:31,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:02:31,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:31,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:02:31,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:02:31,955 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 07:02:41,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:41,824 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 07:02:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:02:41,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-29 07:02:41,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:41,857 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 07:02:41,858 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 07:02:41,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:02:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 07:02:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 07:02:42,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 07:02:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-29 07:02:42,031 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 14 [2020-10-29 07:02:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:42,031 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-29 07:02:42,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:02:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-29 07:02:42,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 07:02:42,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:42,037 INFO L422 BasicCegarLoop]: trace histogram [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 07:02:42,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:02:42,039 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:42,041 INFO L82 PathProgramCache]: Analyzing trace with hash -200703106, now seen corresponding path program 1 times [2020-10-29 07:02:42,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:42,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943576556] [2020-10-29 07:02:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:42,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:42,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:43,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:43,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:43,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:02:43,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:02:43,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-29 07:02:43,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:43,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:43,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:02:43,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:02:43,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:02:43,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:43,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:43,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:43,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:43,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:43,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:02:43,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:43,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:02:43,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:02:43,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:43,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:43,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:43,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:02:43,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:43,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:02:43,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:43,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:02:43,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:02:43,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943576556] [2020-10-29 07:02:43,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:02:43,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:02:43,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121517332] [2020-10-29 07:02:43,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:02:43,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:43,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:02:43,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:02:43,710 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 7 states. [2020-10-29 07:02:59,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:59,962 INFO L93 Difference]: Finished difference Result 4738 states and 8320 transitions. [2020-10-29 07:02:59,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:02:59,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-10-29 07:02:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:59,996 INFO L225 Difference]: With dead ends: 4738 [2020-10-29 07:02:59,996 INFO L226 Difference]: Without dead ends: 3190 [2020-10-29 07:03:00,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:03:00,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-29 07:03:00,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3120. [2020-10-29 07:03:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-29 07:03:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4910 transitions. [2020-10-29 07:03:00,102 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4910 transitions. Word has length 83 [2020-10-29 07:03:00,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:03:00,103 INFO L481 AbstractCegarLoop]: Abstraction has 3120 states and 4910 transitions. [2020-10-29 07:03:00,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:03:00,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4910 transitions. [2020-10-29 07:03:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 07:03:00,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:03:00,107 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:03:00,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:03:00,107 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:03:00,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:03:00,108 INFO L82 PathProgramCache]: Analyzing trace with hash 382995378, now seen corresponding path program 1 times [2020-10-29 07:03:00,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:03:00,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440082010] [2020-10-29 07:03:00,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:03:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:00,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:00,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:00,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:03:00,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:00,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-29 07:03:00,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:00,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:00,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:03:00,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 07:03:00,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:03:00,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:03:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:00,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:00,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:03:00,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:00,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:03:00,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:00,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:03:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:03:00,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:03:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:03:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:00,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:00,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:00,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:03:00,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:00,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 07:03:00,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:00,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:03:00,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:03:00,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440082010] [2020-10-29 07:03:00,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:03:00,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:03:00,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990318238] [2020-10-29 07:03:00,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:03:00,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:03:00,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:03:00,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:03:00,737 INFO L87 Difference]: Start difference. First operand 3120 states and 4910 transitions. Second operand 5 states. [2020-10-29 07:03:14,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:03:14,066 INFO L93 Difference]: Finished difference Result 9384 states and 14871 transitions. [2020-10-29 07:03:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:03:14,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-29 07:03:14,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:03:14,099 INFO L225 Difference]: With dead ends: 9384 [2020-10-29 07:03:14,099 INFO L226 Difference]: Without dead ends: 4717 [2020-10-29 07:03:14,110 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 [2020-10-29 07:03:14,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4717 states. [2020-10-29 07:03:14,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4717 to 4692. [2020-10-29 07:03:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2020-10-29 07:03:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 6541 transitions. [2020-10-29 07:03:14,261 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 6541 transitions. Word has length 89 [2020-10-29 07:03:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:03:14,265 INFO L481 AbstractCegarLoop]: Abstraction has 4692 states and 6541 transitions. [2020-10-29 07:03:14,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:03:14,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 6541 transitions. [2020-10-29 07:03:14,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 07:03:14,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:03:14,275 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:03:14,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:03:14,278 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:03:14,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:03:14,279 INFO L82 PathProgramCache]: Analyzing trace with hash -478230774, now seen corresponding path program 1 times [2020-10-29 07:03:14,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:03:14,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077129153] [2020-10-29 07:03:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:03:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:14,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:14,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:15,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:15,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:03:15,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:03:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 899 [2020-10-29 07:03:15,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:15,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:03:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:03:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 07:03:15,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:15,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:03:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:15,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:15,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:15,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:03:15,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:03:15,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:15,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:03:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:15,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:03:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:15,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:15,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:15,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:03:15,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 07:03:15,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:15,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:03:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:03:15,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:03:15,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077129153] [2020-10-29 07:03:15,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:03:15,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:03:15,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848098604] [2020-10-29 07:03:15,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:03:15,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:03:15,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:03:15,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:03:15,760 INFO L87 Difference]: Start difference. First operand 4692 states and 6541 transitions. Second operand 7 states. [2020-10-29 07:03:31,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:03:31,664 INFO L93 Difference]: Finished difference Result 14355 states and 20478 transitions. [2020-10-29 07:03:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:03:31,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-10-29 07:03:31,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:03:31,717 INFO L225 Difference]: With dead ends: 14355 [2020-10-29 07:03:31,717 INFO L226 Difference]: Without dead ends: 9669 [2020-10-29 07:03:31,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:03:31,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9669 states. [2020-10-29 07:03:31,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9669 to 9559. [2020-10-29 07:03:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9559 states. [2020-10-29 07:03:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9559 states to 9559 states and 12566 transitions. [2020-10-29 07:03:32,073 INFO L78 Accepts]: Start accepts. Automaton has 9559 states and 12566 transitions. Word has length 109 [2020-10-29 07:03:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:03:32,073 INFO L481 AbstractCegarLoop]: Abstraction has 9559 states and 12566 transitions. [2020-10-29 07:03:32,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:03:32,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9559 states and 12566 transitions. [2020-10-29 07:03:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 07:03:32,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:03:32,086 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:03:32,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:03:32,086 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:03:32,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:03:32,087 INFO L82 PathProgramCache]: Analyzing trace with hash 907579898, now seen corresponding path program 1 times [2020-10-29 07:03:32,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:03:32,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712340938] [2020-10-29 07:03:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:03:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:32,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:32,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:33,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:33,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:03:33,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:03:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-10-29 07:03:33,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:33,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:03:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:03:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:03:33,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:03:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:03:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:33,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:33,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:03:33,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:33,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:03:33,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:33,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:33,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:33,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:33,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:03:33,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:33,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:03:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:33,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:33,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:33,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 07:03:33,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:33,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 07:03:33,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:33,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:03:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:03:33,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:03:33,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712340938] [2020-10-29 07:03:33,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:03:33,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:03:33,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252596948] [2020-10-29 07:03:33,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:03:33,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:03:33,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:03:33,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:03:33,671 INFO L87 Difference]: Start difference. First operand 9559 states and 12566 transitions. Second operand 7 states. [2020-10-29 07:03:54,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:03:54,533 INFO L93 Difference]: Finished difference Result 29296 states and 40260 transitions. [2020-10-29 07:03:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:03:54,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-29 07:03:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:03:54,637 INFO L225 Difference]: With dead ends: 29296 [2020-10-29 07:03:54,637 INFO L226 Difference]: Without dead ends: 19743 [2020-10-29 07:03:54,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:03:54,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19743 states. [2020-10-29 07:03:55,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19743 to 19431. [2020-10-29 07:03:55,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19431 states. [2020-10-29 07:03:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19431 states to 19431 states and 24449 transitions. [2020-10-29 07:03:55,292 INFO L78 Accepts]: Start accepts. Automaton has 19431 states and 24449 transitions. Word has length 117 [2020-10-29 07:03:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:03:55,294 INFO L481 AbstractCegarLoop]: Abstraction has 19431 states and 24449 transitions. [2020-10-29 07:03:55,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:03:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 19431 states and 24449 transitions. [2020-10-29 07:03:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-29 07:03:55,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:03:55,299 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:03:55,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:03:55,299 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:03:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:03:55,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1953717480, now seen corresponding path program 1 times [2020-10-29 07:03:55,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:03:55,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702084359] [2020-10-29 07:03:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:03:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:55,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:55,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:57,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:57,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 07:03:57,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:03:57,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1869 [2020-10-29 07:03:57,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:57,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:57,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:03:57,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:03:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 07:03:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:03:57,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:03:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:57,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:57,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:03:57,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:03:57,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:57,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:03:57,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:03:57,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:03:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:57,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:58,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:58,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 07:03:58,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:58,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-29 07:03:58,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:58,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:03:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 07:03:58,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:03:58,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702084359] [2020-10-29 07:03:58,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:03:58,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:03:58,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600961061] [2020-10-29 07:03:58,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:03:58,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:03:58,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:03:58,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:03:58,534 INFO L87 Difference]: Start difference. First operand 19431 states and 24449 transitions. Second operand 8 states. [2020-10-29 07:04:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:04:25,371 INFO L93 Difference]: Finished difference Result 62216 states and 84859 transitions. [2020-10-29 07:04:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:04:25,380 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-10-29 07:04:25,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:04:25,589 INFO L225 Difference]: With dead ends: 62216 [2020-10-29 07:04:25,590 INFO L226 Difference]: Without dead ends: 42791 [2020-10-29 07:04:25,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:04:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42791 states. [2020-10-29 07:04:26,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42791 to 42641. [2020-10-29 07:04:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42641 states. [2020-10-29 07:04:27,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42641 states to 42641 states and 55246 transitions. [2020-10-29 07:04:27,054 INFO L78 Accepts]: Start accepts. Automaton has 42641 states and 55246 transitions. Word has length 212 [2020-10-29 07:04:27,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:04:27,055 INFO L481 AbstractCegarLoop]: Abstraction has 42641 states and 55246 transitions. [2020-10-29 07:04:27,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:04:27,055 INFO L276 IsEmpty]: Start isEmpty. Operand 42641 states and 55246 transitions. [2020-10-29 07:04:27,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 07:04:27,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:04:27,060 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:27,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:04:27,061 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:04:27,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:04:27,061 INFO L82 PathProgramCache]: Analyzing trace with hash 765375300, now seen corresponding path program 1 times [2020-10-29 07:04:27,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:04:27,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142313041] [2020-10-29 07:04:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:04:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:27,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:27,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:30,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:30,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 07:04:30,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:04:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3744 [2020-10-29 07:04:30,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:30,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 07:04:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:04:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-29 07:04:30,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:31,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:04:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:31,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:31,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:31,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:04:31,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:31,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:04:31,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:31,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:31,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:04:31,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:31,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:04:31,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:04:31,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:04:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:31,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:31,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:31,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:04:31,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:04:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-29 07:04:31,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:31,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:04:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:04:31,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:31,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:04:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:31,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:31,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:31,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:31,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:04:31,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:04:31,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-29 07:04:31,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:31,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:04:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:04:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:04:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 07:04:32,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142313041] [2020-10-29 07:04:32,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:04:32,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:04:32,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815416670] [2020-10-29 07:04:32,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:04:32,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:04:32,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:04:32,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:04:32,053 INFO L87 Difference]: Start difference. First operand 42641 states and 55246 transitions. Second operand 7 states. [2020-10-29 07:04:32,259 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-29 07:05:09,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:05:09,702 INFO L93 Difference]: Finished difference Result 111773 states and 153360 transitions. [2020-10-29 07:05:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:05:09,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-29 07:05:09,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:05:09,958 INFO L225 Difference]: With dead ends: 111773 [2020-10-29 07:05:09,958 INFO L226 Difference]: Without dead ends: 69905 [2020-10-29 07:05:10,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:05:10,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69905 states. [2020-10-29 07:05:12,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69905 to 65250. [2020-10-29 07:05:12,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65250 states. [2020-10-29 07:05:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65250 states to 65250 states and 91207 transitions. [2020-10-29 07:05:12,699 INFO L78 Accepts]: Start accepts. Automaton has 65250 states and 91207 transitions. Word has length 248 [2020-10-29 07:05:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:05:12,700 INFO L481 AbstractCegarLoop]: Abstraction has 65250 states and 91207 transitions. [2020-10-29 07:05:12,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:05:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 65250 states and 91207 transitions. [2020-10-29 07:05:12,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-29 07:05:12,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:12,720 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:05:12,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:05:12,721 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:12,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:12,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1164617104, now seen corresponding path program 1 times [2020-10-29 07:05:12,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:12,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085269455] [2020-10-29 07:05:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:13,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:14,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:17,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:17,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-29 07:05:17,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:05:17,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-29 07:05:17,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:17,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:05:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:05:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-29 07:05:17,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:18,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:18,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:18,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:18,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:05:18,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:18,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:05:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:05:18,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:05:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:18,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:18,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:18,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:05:18,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 07:05:18,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:18,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:05:18,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:18,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:05:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:18,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:18,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:18,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:18,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:05:18,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:05:18,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 07:05:18,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:18,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:18,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:18,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:05:18,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:05:18,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-29 07:05:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:18,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:19,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:19,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 07:05:19,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-29 07:05:19,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:19,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:05:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 07:05:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 330 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 07:05:19,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085269455] [2020-10-29 07:05:19,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:05:19,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 07:05:19,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410291099] [2020-10-29 07:05:19,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:05:19,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:19,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:05:19,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:05:19,560 INFO L87 Difference]: Start difference. First operand 65250 states and 91207 transitions. Second operand 9 states. [2020-10-29 07:05:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:05:46,660 INFO L93 Difference]: Finished difference Result 148001 states and 212346 transitions. [2020-10-29 07:05:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:05:46,662 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 402 [2020-10-29 07:05:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:05:47,428 INFO L225 Difference]: With dead ends: 148001 [2020-10-29 07:05:47,428 INFO L226 Difference]: Without dead ends: 83524 [2020-10-29 07:05:47,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-29 07:05:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83524 states. [2020-10-29 07:05:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83524 to 82654. [2020-10-29 07:05:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82654 states. [2020-10-29 07:05:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82654 states to 82654 states and 117139 transitions. [2020-10-29 07:05:51,267 INFO L78 Accepts]: Start accepts. Automaton has 82654 states and 117139 transitions. Word has length 402 [2020-10-29 07:05:51,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:05:51,267 INFO L481 AbstractCegarLoop]: Abstraction has 82654 states and 117139 transitions. [2020-10-29 07:05:51,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:05:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 82654 states and 117139 transitions. [2020-10-29 07:05:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-29 07:05:51,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:51,285 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:05:51,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:05:51,286 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:51,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:51,286 INFO L82 PathProgramCache]: Analyzing trace with hash -430837256, now seen corresponding path program 1 times [2020-10-29 07:05:51,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:51,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846686292] [2020-10-29 07:05:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:51,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:51,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:56,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:56,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-29 07:05:56,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:05:56,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4590 [2020-10-29 07:05:56,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:56,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-29 07:05:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 07:05:56,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:56,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:56,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:56,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:56,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:56,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:05:56,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:56,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:05:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:05:56,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:56,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:05:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:56,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:56,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:56,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:05:56,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 07:05:56,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:56,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:05:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:05:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:56,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:05:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:56,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:56,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:05:56,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:56,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 07:05:56,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:56,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:05:56,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:56,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-29 07:05:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:56,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:56,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:56,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 07:05:56,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 07:05:56,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:56,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:56,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:05:56,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 07:05:56,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:57,041 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 07:05:57,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846686292] [2020-10-29 07:05:57,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:05:57,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:05:57,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238682902] [2020-10-29 07:05:57,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:05:57,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:57,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:05:57,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:05:57,044 INFO L87 Difference]: Start difference. First operand 82654 states and 117139 transitions. Second operand 7 states.