/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/Problem17_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:12:21,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:12:21,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:12:21,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:12:21,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:12:21,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:12:21,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:12:21,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:12:21,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:12:21,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:12:21,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:12:21,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:12:21,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:12:21,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:12:21,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:12:21,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:12:21,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:12:21,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:12:21,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:12:21,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:12:21,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:12:21,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:12:21,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:12:21,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:12:21,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:12:21,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:12:21,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:12:21,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:12:21,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:12:21,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:12:21,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:12:21,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:12:21,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:12:21,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:12:21,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:12:21,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:12:21,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:12:21,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:12:21,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:12:21,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:12:21,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:12:21,410 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 08:12:21,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:12:21,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:12:21,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:12:21,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:12:21,442 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:12:21,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:12:21,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:12:21,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:12:21,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:12:21,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:12:21,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:12:21,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:12:21,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:12:21,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:12:21,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:12:21,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:12:21,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:12:21,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:12:21,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:12:21,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:12:21,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:12:21,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:12:21,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:12:21,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:12:21,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:12:21,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:12:21,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:12:21,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:12:21,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:12:21,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:12:21,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:12:21,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:12:21,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:12:21,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:12:21,945 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:12:21,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11.c [2020-10-29 08:12:22,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f2e65b94/af02354eca0c4cbd85a009f27530598d/FLAG0017d8a35 [2020-10-29 08:12:23,047 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:12:23,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label11.c [2020-10-29 08:12:23,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f2e65b94/af02354eca0c4cbd85a009f27530598d/FLAG0017d8a35 [2020-10-29 08:12:23,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f2e65b94/af02354eca0c4cbd85a009f27530598d [2020-10-29 08:12:23,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:12:23,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:12:23,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:12:23,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:12:23,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:12:23,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:12:23" (1/1) ... [2020-10-29 08:12:23,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf018bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:23, skipping insertion in model container [2020-10-29 08:12:23,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:12:23" (1/1) ... [2020-10-29 08:12:23,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:12:23,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:12:24,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:12:24,760 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:12:25,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:12:25,382 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:12:25,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:25 WrapperNode [2020-10-29 08:12:25,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:12:25,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:12:25,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:12:25,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:12:25,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:25" (1/1) ... [2020-10-29 08:12:25,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:25" (1/1) ... [2020-10-29 08:12:25,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:25" (1/1) ... [2020-10-29 08:12:25,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:25" (1/1) ... [2020-10-29 08:12:25,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:25" (1/1) ... [2020-10-29 08:12:25,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:25" (1/1) ... [2020-10-29 08:12:25,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:25" (1/1) ... [2020-10-29 08:12:25,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:12:25,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:12:25,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:12:25,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:12:25,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:25" (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 08:12:25,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:12:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:12:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:12:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:12:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:12:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:12:25,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:12:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:12:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:12:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:12:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:12:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:12:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:12:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:12:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:12:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:12:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:12:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:12:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:12:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:12:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:12:35,251 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:12:35,251 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:12:35,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:12:35 BoogieIcfgContainer [2020-10-29 08:12:35,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:12:35,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:12:35,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:12:35,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:12:35,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:12:23" (1/3) ... [2020-10-29 08:12:35,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f4ed53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:12:35, skipping insertion in model container [2020-10-29 08:12:35,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:25" (2/3) ... [2020-10-29 08:12:35,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f4ed53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:12:35, skipping insertion in model container [2020-10-29 08:12:35,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:12:35" (3/3) ... [2020-10-29 08:12:35,265 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label11.c [2020-10-29 08:12:35,279 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:12:35,286 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:12:35,302 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:12:35,339 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:12:35,339 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:12:35,339 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:12:35,339 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:12:35,339 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:12:35,339 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:12:35,340 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:12:35,340 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:12:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:12:35,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 08:12:35,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:35,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:12:35,386 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:35,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:35,394 INFO L82 PathProgramCache]: Analyzing trace with hash -453671637, now seen corresponding path program 1 times [2020-10-29 08:12:35,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:35,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526256817] [2020-10-29 08:12:35,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:35,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:36,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:36,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:12:36,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:36,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-10-29 08:12:36,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:36,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:12:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:12:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 08:12:36,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 08:12:36,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:36,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:36,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:36,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:36,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:12:36,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:36,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:36,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:36,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:12:36,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:12:36,721 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 08:12:36,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526256817] [2020-10-29 08:12:36,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:12:36,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:12:36,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053366723] [2020-10-29 08:12:36,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:12:36,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:36,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:12:36,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:12:36,763 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:12:51,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:51,024 INFO L93 Difference]: Finished difference Result 1695 states and 3092 transitions. [2020-10-29 08:12:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:12:51,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-29 08:12:51,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:51,079 INFO L225 Difference]: With dead ends: 1695 [2020-10-29 08:12:51,079 INFO L226 Difference]: Without dead ends: 1011 [2020-10-29 08:12:51,101 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 08:12:51,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-29 08:12:51,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1004. [2020-10-29 08:12:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-10-29 08:12:51,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1500 transitions. [2020-10-29 08:12:51,302 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1500 transitions. Word has length 63 [2020-10-29 08:12:51,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:51,303 INFO L481 AbstractCegarLoop]: Abstraction has 1004 states and 1500 transitions. [2020-10-29 08:12:51,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:12:51,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1500 transitions. [2020-10-29 08:12:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 08:12:51,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:51,324 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:12:51,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:12:51,324 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:51,325 INFO L82 PathProgramCache]: Analyzing trace with hash -2043828897, now seen corresponding path program 1 times [2020-10-29 08:12:51,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:51,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359302654] [2020-10-29 08:12:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:51,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:56,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:56,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 08:12:56,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:12:56,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 08:12:56,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:56,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:12:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:12:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:12:56,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:12:56,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:56,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:56,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:56,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:56,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:56,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:12:56,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:56,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:12:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:56,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:56,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:56,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:12:56,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 08:12:56,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:56,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:12:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:12:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:12:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:12:57,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359302654] [2020-10-29 08:12:57,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:12:57,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:12:57,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317144052] [2020-10-29 08:12:57,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:12:57,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:57,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:12:57,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:12:57,134 INFO L87 Difference]: Start difference. First operand 1004 states and 1500 transitions. Second operand 8 states. [2020-10-29 08:13:14,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:14,314 INFO L93 Difference]: Finished difference Result 2497 states and 3590 transitions. [2020-10-29 08:13:14,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:13:14,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-10-29 08:13:14,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:14,326 INFO L225 Difference]: With dead ends: 2497 [2020-10-29 08:13:14,326 INFO L226 Difference]: Without dead ends: 1465 [2020-10-29 08:13:14,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:13:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2020-10-29 08:13:14,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1448. [2020-10-29 08:13:14,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2020-10-29 08:13:14,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1980 transitions. [2020-10-29 08:13:14,382 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1980 transitions. Word has length 137 [2020-10-29 08:13:14,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:14,382 INFO L481 AbstractCegarLoop]: Abstraction has 1448 states and 1980 transitions. [2020-10-29 08:13:14,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:13:14,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1980 transitions. [2020-10-29 08:13:14,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 08:13:14,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:14,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:13:14,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:13:14,386 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:14,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:14,387 INFO L82 PathProgramCache]: Analyzing trace with hash -2144414710, now seen corresponding path program 1 times [2020-10-29 08:13:14,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:14,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913559077] [2020-10-29 08:13:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:14,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:14,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:14,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 08:13:14,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-29 08:13:14,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:14,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:13:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 08:13:14,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:15,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:15,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:15,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:15,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:15,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:15,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:13:15,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:15,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:15,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:13:15,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:15,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:13:15,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:15,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:15,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:15,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:15,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:13:15,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:15,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 08:13:15,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:15,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:15,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:13:15,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:13:15,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913559077] [2020-10-29 08:13:15,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:15,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:13:15,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688645216] [2020-10-29 08:13:15,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:13:15,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:15,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:13:15,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:13:15,387 INFO L87 Difference]: Start difference. First operand 1448 states and 1980 transitions. Second operand 5 states. [2020-10-29 08:13:30,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:30,662 INFO L93 Difference]: Finished difference Result 3799 states and 5362 transitions. [2020-10-29 08:13:30,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:13:30,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-29 08:13:30,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:30,684 INFO L225 Difference]: With dead ends: 3799 [2020-10-29 08:13:30,684 INFO L226 Difference]: Without dead ends: 2794 [2020-10-29 08:13:30,688 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 08:13:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2020-10-29 08:13:30,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2778. [2020-10-29 08:13:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2778 states. [2020-10-29 08:13:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3605 transitions. [2020-10-29 08:13:30,779 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3605 transitions. Word has length 150 [2020-10-29 08:13:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:30,780 INFO L481 AbstractCegarLoop]: Abstraction has 2778 states and 3605 transitions. [2020-10-29 08:13:30,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:13:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3605 transitions. [2020-10-29 08:13:30,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-29 08:13:30,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:30,785 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:13:30,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:13:30,785 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:30,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:30,786 INFO L82 PathProgramCache]: Analyzing trace with hash -827644541, now seen corresponding path program 1 times [2020-10-29 08:13:30,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:30,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183714128] [2020-10-29 08:13:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:30,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:31,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:32,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:33,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:33,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-29 08:13:33,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:13:33,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2446 [2020-10-29 08:13:33,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:33,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:33,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:13:33,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:13:33,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 08:13:33,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:33,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:33,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:33,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:33,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:33,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:33,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:13:33,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:33,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:13:33,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:33,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:33,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:33,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 08:13:33,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:33,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-29 08:13:33,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:33,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:13:33,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:13:34,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183714128] [2020-10-29 08:13:34,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:13:34,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:13:34,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935656705] [2020-10-29 08:13:34,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:13:34,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:34,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:13:34,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:13:34,072 INFO L87 Difference]: Start difference. First operand 2778 states and 3605 transitions. Second operand 7 states. [2020-10-29 08:13:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:50,922 INFO L93 Difference]: Finished difference Result 4821 states and 6663 transitions. [2020-10-29 08:13:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:13:50,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-10-29 08:13:50,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:50,947 INFO L225 Difference]: With dead ends: 4821 [2020-10-29 08:13:50,948 INFO L226 Difference]: Without dead ends: 2482 [2020-10-29 08:13:50,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:13:50,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2020-10-29 08:13:51,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2391. [2020-10-29 08:13:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2391 states. [2020-10-29 08:13:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 3184 transitions. [2020-10-29 08:13:51,056 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 3184 transitions. Word has length 200 [2020-10-29 08:13:51,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:51,057 INFO L481 AbstractCegarLoop]: Abstraction has 2391 states and 3184 transitions. [2020-10-29 08:13:51,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:13:51,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 3184 transitions. [2020-10-29 08:13:51,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-29 08:13:51,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:51,062 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 08:13:51,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:13:51,063 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:51,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:51,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1879662507, now seen corresponding path program 1 times [2020-10-29 08:13:51,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:51,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210730205] [2020-10-29 08:13:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:51,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:51,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:51,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-29 08:13:51,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-29 08:13:51,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:51,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:13:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:13:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:51,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:51,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:51,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:51,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:51,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:13:51,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:51,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:51,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:13:51,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:51,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:13:51,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:51,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:51,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:52,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:52,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:13:52,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:52,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 08:13:52,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:52,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:13:52,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:52,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:13:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:52,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:52,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:13:52,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:52,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 08:13:52,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:52,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:13:52,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:13:52,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210730205] [2020-10-29 08:13:52,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:52,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:13:52,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887490843] [2020-10-29 08:13:52,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:13:52,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:52,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:13:52,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:13:52,410 INFO L87 Difference]: Start difference. First operand 2391 states and 3184 transitions. Second operand 7 states. [2020-10-29 08:14:22,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:22,592 INFO L93 Difference]: Finished difference Result 6278 states and 9005 transitions. [2020-10-29 08:14:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:14:22,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-29 08:14:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:22,624 INFO L225 Difference]: With dead ends: 6278 [2020-10-29 08:14:22,625 INFO L226 Difference]: Without dead ends: 4326 [2020-10-29 08:14:22,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:14:22,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2020-10-29 08:14:22,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 4261. [2020-10-29 08:14:22,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4261 states. [2020-10-29 08:14:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 5468 transitions. [2020-10-29 08:14:22,763 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 5468 transitions. Word has length 221 [2020-10-29 08:14:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:22,764 INFO L481 AbstractCegarLoop]: Abstraction has 4261 states and 5468 transitions. [2020-10-29 08:14:22,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:14:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 5468 transitions. [2020-10-29 08:14:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-29 08:14:22,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:22,769 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 08:14:22,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:14:22,770 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:22,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:22,770 INFO L82 PathProgramCache]: Analyzing trace with hash -297089165, now seen corresponding path program 1 times [2020-10-29 08:14:22,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:22,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023380682] [2020-10-29 08:14:22,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:23,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:23,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:27,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:27,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 08:14:27,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:14:27,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 08:14:27,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:27,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:14:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:14:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:14:27,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:28,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:28,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:28,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:28,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:28,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:28,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:14:28,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:28,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:28,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:14:28,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:28,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:28,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:28,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:28,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:14:28,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:28,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-29 08:14:28,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:28,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:14:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:14:28,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:28,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:14:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:28,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:28,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:28,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:14:28,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:28,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 08:14:28,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:28,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:14:28,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 08:14:28,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023380682] [2020-10-29 08:14:28,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:28,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:14:28,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227753149] [2020-10-29 08:14:28,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:14:28,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:28,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:14:28,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:14:28,844 INFO L87 Difference]: Start difference. First operand 4261 states and 5468 transitions. Second operand 9 states. [2020-10-29 08:15:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:01,500 INFO L93 Difference]: Finished difference Result 12079 states and 17003 transitions. [2020-10-29 08:15:01,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 08:15:01,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 225 [2020-10-29 08:15:01,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:01,546 INFO L225 Difference]: With dead ends: 12079 [2020-10-29 08:15:01,546 INFO L226 Difference]: Without dead ends: 8259 [2020-10-29 08:15:01,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-29 08:15:01,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2020-10-29 08:15:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 8108. [2020-10-29 08:15:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8108 states. [2020-10-29 08:15:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8108 states to 8108 states and 10841 transitions. [2020-10-29 08:15:01,807 INFO L78 Accepts]: Start accepts. Automaton has 8108 states and 10841 transitions. Word has length 225 [2020-10-29 08:15:01,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:01,808 INFO L481 AbstractCegarLoop]: Abstraction has 8108 states and 10841 transitions. [2020-10-29 08:15:01,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:15:01,808 INFO L276 IsEmpty]: Start isEmpty. Operand 8108 states and 10841 transitions. [2020-10-29 08:15:01,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-29 08:15:01,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:01,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:15:01,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:15:01,813 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:01,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:01,814 INFO L82 PathProgramCache]: Analyzing trace with hash 908286525, now seen corresponding path program 1 times [2020-10-29 08:15:01,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:01,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250944650] [2020-10-29 08:15:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:01,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:02,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:02,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:06,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:06,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:15:06,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:15:06,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 08:15:06,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:06,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:06,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:15:06,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:15:06,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 08:15:06,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:07,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:07,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:07,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:07,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:07,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:15:07,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:07,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:07,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:07,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:07,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:07,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:07,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:07,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:07,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 08:15:07,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:07,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:07,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:07,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:07,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:15:07,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:07,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:15:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:07,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:07,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:07,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:07,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:15:07,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:15:07,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 08:15:07,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:07,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:07,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:15:07,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:15:07,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250944650] [2020-10-29 08:15:07,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:07,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:15:07,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554650850] [2020-10-29 08:15:07,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:15:07,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:07,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:15:07,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:15:07,723 INFO L87 Difference]: Start difference. First operand 8108 states and 10841 transitions. Second operand 5 states. [2020-10-29 08:15:22,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:22,610 INFO L93 Difference]: Finished difference Result 16229 states and 22237 transitions. [2020-10-29 08:15:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:15:22,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2020-10-29 08:15:22,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:22,650 INFO L225 Difference]: With dead ends: 16229 [2020-10-29 08:15:22,651 INFO L226 Difference]: Without dead ends: 8562 [2020-10-29 08:15:22,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:15:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8562 states. [2020-10-29 08:15:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8562 to 8107. [2020-10-29 08:15:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8107 states. [2020-10-29 08:15:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8107 states to 8107 states and 10836 transitions. [2020-10-29 08:15:22,902 INFO L78 Accepts]: Start accepts. Automaton has 8107 states and 10836 transitions. Word has length 236 [2020-10-29 08:15:22,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:22,903 INFO L481 AbstractCegarLoop]: Abstraction has 8107 states and 10836 transitions. [2020-10-29 08:15:22,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:15:22,903 INFO L276 IsEmpty]: Start isEmpty. Operand 8107 states and 10836 transitions. [2020-10-29 08:15:22,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-29 08:15:22,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:22,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:22,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:15:22,909 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:22,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:22,910 INFO L82 PathProgramCache]: Analyzing trace with hash -55240084, now seen corresponding path program 1 times [2020-10-29 08:15:22,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:22,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997026702] [2020-10-29 08:15:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:23,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:25,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:27,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:27,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 08:15:27,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:15:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4387 [2020-10-29 08:15:27,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:27,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:15:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:15:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-29 08:15:27,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:27,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:27,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:27,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:27,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:15:27,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:27,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:27,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:15:27,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:27,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:27,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:27,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:27,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:27,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:15:27,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:15:27,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-29 08:15:27,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:27,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:27,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 08:15:27,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:27,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 08:15:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:27,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:28,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:28,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:15:28,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 08:15:28,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:28,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:15:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:15:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:15:28,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997026702] [2020-10-29 08:15:28,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:28,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:15:28,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024924040] [2020-10-29 08:15:28,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:15:28,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:28,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:15:28,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:15:28,328 INFO L87 Difference]: Start difference. First operand 8107 states and 10836 transitions. Second operand 8 states. [2020-10-29 08:15:44,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:44,518 INFO L93 Difference]: Finished difference Result 19158 states and 26681 transitions. [2020-10-29 08:15:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:15:44,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2020-10-29 08:15:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:44,561 INFO L225 Difference]: With dead ends: 19158 [2020-10-29 08:15:44,561 INFO L226 Difference]: Without dead ends: 11048 [2020-10-29 08:15:44,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:15:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11048 states. [2020-10-29 08:15:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11048 to 9990. [2020-10-29 08:15:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9990 states. [2020-10-29 08:15:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9990 states to 9990 states and 12762 transitions. [2020-10-29 08:15:44,824 INFO L78 Accepts]: Start accepts. Automaton has 9990 states and 12762 transitions. Word has length 249 [2020-10-29 08:15:44,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:44,825 INFO L481 AbstractCegarLoop]: Abstraction has 9990 states and 12762 transitions. [2020-10-29 08:15:44,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:15:44,825 INFO L276 IsEmpty]: Start isEmpty. Operand 9990 states and 12762 transitions. [2020-10-29 08:15:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 08:15:44,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:44,832 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:15:44,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:15:44,832 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:44,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:44,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1893457384, now seen corresponding path program 1 times [2020-10-29 08:15:44,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:44,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987548658] [2020-10-29 08:15:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:45,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:45,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-29 08:15:45,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:45,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-29 08:15:45,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:45,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-29 08:15:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:15:45,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:45,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:45,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:45,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:45,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:45,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:45,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:15:45,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:45,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:45,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:45,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:45,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:45,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:45,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:45,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:45,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:45,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:15:45,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:45,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:45,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:45,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:15:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:45,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:45,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:15:45,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:45,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:15:45,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:45,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:15:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:15:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:46,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:46,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:15:46,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:46,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 08:15:46,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:46,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:46,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:46,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:15:46,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 08:15:46,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987548658] [2020-10-29 08:15:46,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:46,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:15:46,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792562461] [2020-10-29 08:15:46,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:15:46,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:46,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:15:46,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:15:46,259 INFO L87 Difference]: Start difference. First operand 9990 states and 12762 transitions. Second operand 7 states. [2020-10-29 08:16:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:07,787 INFO L93 Difference]: Finished difference Result 24686 states and 32316 transitions. [2020-10-29 08:16:07,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:16:07,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-29 08:16:07,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:07,845 INFO L225 Difference]: With dead ends: 24686 [2020-10-29 08:16:07,845 INFO L226 Difference]: Without dead ends: 14668 [2020-10-29 08:16:07,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:16:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14668 states. [2020-10-29 08:16:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14668 to 12765. [2020-10-29 08:16:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12765 states. [2020-10-29 08:16:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12765 states to 12765 states and 16732 transitions. [2020-10-29 08:16:08,199 INFO L78 Accepts]: Start accepts. Automaton has 12765 states and 16732 transitions. Word has length 307 [2020-10-29 08:16:08,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:08,200 INFO L481 AbstractCegarLoop]: Abstraction has 12765 states and 16732 transitions. [2020-10-29 08:16:08,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:16:08,200 INFO L276 IsEmpty]: Start isEmpty. Operand 12765 states and 16732 transitions. [2020-10-29 08:16:08,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-29 08:16:08,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:08,209 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:16:08,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:16:08,209 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:08,210 INFO L82 PathProgramCache]: Analyzing trace with hash -172513193, now seen corresponding path program 1 times [2020-10-29 08:16:08,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:08,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287650166] [2020-10-29 08:16:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:08,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:08,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking...