/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:37:07,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:37:07,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:37:07,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:37:07,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:37:07,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:37:07,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:37:07,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:37:07,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:37:07,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:37:07,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:37:07,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:37:07,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:37:07,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:37:07,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:37:07,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:37:07,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:37:07,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:37:07,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:37:07,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:37:07,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:37:07,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:37:07,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:37:07,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:37:07,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:37:07,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:37:07,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:37:07,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:37:07,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:37:07,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:37:07,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:37:07,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:37:07,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:37:07,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:37:07,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:37:07,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:37:07,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:37:07,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:37:07,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:37:07,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:37:07,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:37:07,863 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 [2020-10-28 13:37:07,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:37:07,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:37:07,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:37:07,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:37:07,943 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:37:07,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:37:07,945 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:37:07,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:37:07,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:37:07,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:37:07,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:37:07,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:37:07,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:37:07,947 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:37:07,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:37:07,948 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:37:07,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:37:07,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:37:07,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:37:07,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:37:07,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:37:07,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:37:07,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:37:07,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:37:07,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:37:07,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:37:07,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:37:07,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:37:07,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:37:07,951 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:37:08,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:37:08,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:37:08,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:37:08,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:37:08,463 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:37:08,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label29.c [2020-10-28 13:37:08,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83868cb20/11c37b1ebb744515a94f1e842bd47537/FLAGff57bc90f [2020-10-28 13:37:09,578 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:37:09,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label29.c [2020-10-28 13:37:09,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83868cb20/11c37b1ebb744515a94f1e842bd47537/FLAGff57bc90f [2020-10-28 13:37:10,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83868cb20/11c37b1ebb744515a94f1e842bd47537 [2020-10-28 13:37:10,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:37:10,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:37:10,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:37:10,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:37:10,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:37:10,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:37:10" (1/1) ... [2020-10-28 13:37:10,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3965b1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:10, skipping insertion in model container [2020-10-28 13:37:10,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:37:10" (1/1) ... [2020-10-28 13:37:10,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:37:10,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:37:11,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:37:11,339 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:37:11,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:37:11,872 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:37:11,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:11 WrapperNode [2020-10-28 13:37:11,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:37:11,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:37:11,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:37:11,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:37:11,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:11" (1/1) ... [2020-10-28 13:37:11,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:11" (1/1) ... [2020-10-28 13:37:12,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:11" (1/1) ... [2020-10-28 13:37:12,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:11" (1/1) ... [2020-10-28 13:37:12,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:11" (1/1) ... [2020-10-28 13:37:12,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:11" (1/1) ... [2020-10-28 13:37:12,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:11" (1/1) ... [2020-10-28 13:37:12,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:37:12,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:37:12,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:37:12,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:37:12,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:11" (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 [2020-10-28 13:37:12,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:37:12,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:37:12,376 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:37:12,376 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:37:12,377 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:37:12,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:37:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:37:12,378 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:37:12,378 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:37:12,378 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:37:12,379 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:37:12,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:37:12,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:37:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:37:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:37:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:37:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:37:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:37:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:37:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:37:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:37:22,238 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:37:22,239 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:37:22,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:37:22 BoogieIcfgContainer [2020-10-28 13:37:22,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:37:22,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:37:22,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:37:22,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:37:22,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:37:10" (1/3) ... [2020-10-28 13:37:22,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab4826f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:37:22, skipping insertion in model container [2020-10-28 13:37:22,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:11" (2/3) ... [2020-10-28 13:37:22,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab4826f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:37:22, skipping insertion in model container [2020-10-28 13:37:22,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:37:22" (3/3) ... [2020-10-28 13:37:22,257 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label29.c [2020-10-28 13:37:22,270 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:37:22,276 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:37:22,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:37:22,326 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:37:22,326 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:37:22,326 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:37:22,326 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:37:22,326 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:37:22,327 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:37:22,327 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:37:22,327 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:37:22,361 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:37:22,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 13:37:22,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:22,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:37:22,382 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:22,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:22,400 INFO L82 PathProgramCache]: Analyzing trace with hash 393174018, now seen corresponding path program 1 times [2020-10-28 13:37:22,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:22,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626011657] [2020-10-28 13:37:22,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:22,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:23,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:23,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 13:37:23,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-10-28 13:37:23,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:23,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:37:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:37:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:37:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:37:23,649 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:37:23,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:23,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:23,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:23,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:23,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:23,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:37:23,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:23,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:23,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:23,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:23,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:37:23,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:37:23,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626011657] [2020-10-28 13:37:23,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:37:23,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:37:23,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739192715] [2020-10-28 13:37:23,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:37:23,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:23,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:37:23,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:37:23,760 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:37:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:36,338 INFO L93 Difference]: Finished difference Result 1721 states and 3132 transitions. [2020-10-28 13:37:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:37:36,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-28 13:37:36,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:36,384 INFO L225 Difference]: With dead ends: 1721 [2020-10-28 13:37:36,385 INFO L226 Difference]: Without dead ends: 1035 [2020-10-28 13:37:36,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:37:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-10-28 13:37:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1009. [2020-10-28 13:37:36,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-28 13:37:36,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1706 transitions. [2020-10-28 13:37:36,606 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1706 transitions. Word has length 72 [2020-10-28 13:37:36,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:36,608 INFO L481 AbstractCegarLoop]: Abstraction has 1009 states and 1706 transitions. [2020-10-28 13:37:36,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:37:36,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1706 transitions. [2020-10-28 13:37:36,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 13:37:36,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:36,627 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:37:36,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:37:36,628 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:36,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1751403066, now seen corresponding path program 1 times [2020-10-28 13:37:36,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:36,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571954571] [2020-10-28 13:37:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:36,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:38,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:38,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 13:37:38,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:37:38,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1785 [2020-10-28 13:37:38,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:38,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:37:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:37:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:37:38,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:37:38,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:38,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:38,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:38,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:38,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:37:38,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:38,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:37:38,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:38,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:37:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:38,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:38,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:38,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:37:38,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:38,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-28 13:37:38,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:38,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:37:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:37:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:37:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:37:39,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571954571] [2020-10-28 13:37:39,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:37:39,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:37:39,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352056719] [2020-10-28 13:37:39,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:37:39,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:39,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:37:39,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:37:39,072 INFO L87 Difference]: Start difference. First operand 1009 states and 1706 transitions. Second operand 7 states. [2020-10-28 13:37:57,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:57,704 INFO L93 Difference]: Finished difference Result 2995 states and 5150 transitions. [2020-10-28 13:37:57,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:37:57,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-28 13:37:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:57,722 INFO L225 Difference]: With dead ends: 2995 [2020-10-28 13:37:57,723 INFO L226 Difference]: Without dead ends: 1992 [2020-10-28 13:37:57,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:37:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2020-10-28 13:37:57,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1919. [2020-10-28 13:37:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2020-10-28 13:37:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2843 transitions. [2020-10-28 13:37:57,811 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2843 transitions. Word has length 141 [2020-10-28 13:37:57,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:57,812 INFO L481 AbstractCegarLoop]: Abstraction has 1919 states and 2843 transitions. [2020-10-28 13:37:57,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:37:57,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2843 transitions. [2020-10-28 13:37:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 13:37:57,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:57,815 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, 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] [2020-10-28 13:37:57,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:37:57,816 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:57,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1667793106, now seen corresponding path program 1 times [2020-10-28 13:37:57,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:57,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275402436] [2020-10-28 13:37:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:58,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:59,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:00,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:00,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:38:00,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:38:00,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2237 [2020-10-28 13:38:00,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:00,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:00,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:38:00,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:38:00,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:38:00,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:00,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:00,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:00,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:00,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:00,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:38:00,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:00,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:38:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:00,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:00,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:00,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:00,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:38:00,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:00,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-28 13:38:00,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:00,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:38:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:38:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:38:00,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:38:00,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275402436] [2020-10-28 13:38:00,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:38:00,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:38:00,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965705157] [2020-10-28 13:38:00,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:38:00,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:38:00,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:38:00,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:38:00,796 INFO L87 Difference]: Start difference. First operand 1919 states and 2843 transitions. Second operand 7 states. [2020-10-28 13:38:14,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:38:14,845 INFO L93 Difference]: Finished difference Result 4322 states and 6737 transitions. [2020-10-28 13:38:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:38:14,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-28 13:38:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:38:14,861 INFO L225 Difference]: With dead ends: 4322 [2020-10-28 13:38:14,861 INFO L226 Difference]: Without dead ends: 2409 [2020-10-28 13:38:14,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:38:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2020-10-28 13:38:14,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 1915. [2020-10-28 13:38:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-28 13:38:14,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2638 transitions. [2020-10-28 13:38:14,932 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2638 transitions. Word has length 151 [2020-10-28 13:38:14,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:38:14,933 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states and 2638 transitions. [2020-10-28 13:38:14,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:38:14,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2638 transitions. [2020-10-28 13:38:14,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-28 13:38:14,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:38:14,937 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:38:14,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:38:14,938 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:38:14,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:38:14,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1852668422, now seen corresponding path program 1 times [2020-10-28 13:38:14,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:38:14,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527527926] [2020-10-28 13:38:14,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:38:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:15,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:16,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:16,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:16,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-28 13:38:16,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:38:16,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1521 [2020-10-28 13:38:16,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:16,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:38:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:38:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 13:38:16,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:16,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:16,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:16,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:16,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:16,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:16,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:38:16,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:16,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:16,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:16,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:16,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:16,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:16,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:16,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:38:16,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:16,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 13:38:16,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:16,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:16,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:38:16,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:38:17,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:38:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:17,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:17,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:17,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:38:17,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:17,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 13:38:17,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:17,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:17,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:38:17,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:38:17,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:38:17,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:38:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 128 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:38:17,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527527926] [2020-10-28 13:38:17,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:38:17,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:38:17,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288418789] [2020-10-28 13:38:17,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:38:17,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:38:17,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:38:17,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:38:17,413 INFO L87 Difference]: Start difference. First operand 1915 states and 2638 transitions. Second operand 6 states. [2020-10-28 13:38:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:38:37,206 INFO L93 Difference]: Finished difference Result 5673 states and 7890 transitions. [2020-10-28 13:38:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:38:37,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2020-10-28 13:38:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:38:37,236 INFO L225 Difference]: With dead ends: 5673 [2020-10-28 13:38:37,236 INFO L226 Difference]: Without dead ends: 2871 [2020-10-28 13:38:37,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:38:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-10-28 13:38:37,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2852. [2020-10-28 13:38:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2852 states. [2020-10-28 13:38:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 3664 transitions. [2020-10-28 13:38:37,346 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 3664 transitions. Word has length 228 [2020-10-28 13:38:37,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:38:37,349 INFO L481 AbstractCegarLoop]: Abstraction has 2852 states and 3664 transitions. [2020-10-28 13:38:37,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:38:37,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 3664 transitions. [2020-10-28 13:38:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-28 13:38:37,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:38:37,356 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:38:37,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:38:37,356 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:38:37,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:38:37,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1807491127, now seen corresponding path program 1 times [2020-10-28 13:38:37,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:38:37,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545239167] [2020-10-28 13:38:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:38:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:37,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:39,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:39,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-28 13:38:39,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:38:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1561 [2020-10-28 13:38:39,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:39,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:38:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:38:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:38:39,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:39,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:39,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:39,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:39,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:39,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:39,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:38:39,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:39,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:39,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:38:39,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:39,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:39,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:39,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:38:39,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:39,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:38:39,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:39,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:39,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:39,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:39,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:38:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-28 13:38:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:38:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:39,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:39,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:39,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:38:39,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:39,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 13:38:39,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:39,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:38:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:38:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:38:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:38:39,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545239167] [2020-10-28 13:38:39,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:38:39,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:38:39,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316417063] [2020-10-28 13:38:39,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:38:39,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:38:39,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:38:39,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:38:39,749 INFO L87 Difference]: Start difference. First operand 2852 states and 3664 transitions. Second operand 8 states. [2020-10-28 13:38:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:38:55,964 INFO L93 Difference]: Finished difference Result 7568 states and 10150 transitions. [2020-10-28 13:38:55,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:38:55,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2020-10-28 13:38:55,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:38:55,995 INFO L225 Difference]: With dead ends: 7568 [2020-10-28 13:38:55,995 INFO L226 Difference]: Without dead ends: 4722 [2020-10-28 13:38:56,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:38:56,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2020-10-28 13:38:56,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 4700. [2020-10-28 13:38:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2020-10-28 13:38:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 6054 transitions. [2020-10-28 13:38:56,147 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 6054 transitions. Word has length 229 [2020-10-28 13:38:56,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:38:56,147 INFO L481 AbstractCegarLoop]: Abstraction has 4700 states and 6054 transitions. [2020-10-28 13:38:56,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:38:56,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 6054 transitions. [2020-10-28 13:38:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-28 13:38:56,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:38:56,152 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:38:56,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:38:56,153 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:38:56,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:38:56,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1985410086, now seen corresponding path program 1 times [2020-10-28 13:38:56,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:38:56,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135494189] [2020-10-28 13:38:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:38:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:56,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:56,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:57,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:59,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:01,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:01,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:39:01,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:39:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 13:39:01,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:01,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:39:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:39:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:39:01,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:39:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:01,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:01,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:39:01,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:01,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:39:01,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:01,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:01,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:01,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:39:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:39:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:01,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:01,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:01,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:39:01,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:01,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:39:01,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:01,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:01,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:39:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:01,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:01,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:01,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:39:01,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:39:01,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:01,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:39:01,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:39:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:39:01,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135494189] [2020-10-28 13:39:01,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:39:01,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:39:01,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244596943] [2020-10-28 13:39:01,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:39:01,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:39:01,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:39:01,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:39:01,801 INFO L87 Difference]: Start difference. First operand 4700 states and 6054 transitions. Second operand 5 states. [2020-10-28 13:39:01,961 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:39:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:39:23,853 INFO L93 Difference]: Finished difference Result 13391 states and 17718 transitions. [2020-10-28 13:39:23,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:39:23,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-28 13:39:23,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:39:23,910 INFO L225 Difference]: With dead ends: 13391 [2020-10-28 13:39:23,910 INFO L226 Difference]: Without dead ends: 8696 [2020-10-28 13:39:23,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:39:23,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8696 states. [2020-10-28 13:39:24,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8696 to 8247. [2020-10-28 13:39:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8247 states. [2020-10-28 13:39:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8247 states to 8247 states and 10266 transitions. [2020-10-28 13:39:24,196 INFO L78 Accepts]: Start accepts. Automaton has 8247 states and 10266 transitions. Word has length 234 [2020-10-28 13:39:24,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:39:24,196 INFO L481 AbstractCegarLoop]: Abstraction has 8247 states and 10266 transitions. [2020-10-28 13:39:24,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:39:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 8247 states and 10266 transitions. [2020-10-28 13:39:24,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-28 13:39:24,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:39:24,202 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:39:24,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:39:24,203 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:39:24,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:39:24,203 INFO L82 PathProgramCache]: Analyzing trace with hash 404506128, now seen corresponding path program 1 times [2020-10-28 13:39:24,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:39:24,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589044610] [2020-10-28 13:39:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:39:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:24,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:24,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:29,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:29,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-28 13:39:29,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:39:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 13:39:29,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:29,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:39:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:39:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:39:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:29,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:39:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:29,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:29,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:29,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:39:29,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:29,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:39:29,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:29,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:29,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:29,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:39:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:29,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:29,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:29,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:39:29,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:29,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:39:29,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:29,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:39:29,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:29,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:39:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:29,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:30,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:30,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:39:30,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:39:30,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-28 13:39:30,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:30,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:39:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:39:30,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589044610] [2020-10-28 13:39:30,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:39:30,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:39:30,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009334250] [2020-10-28 13:39:30,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:39:30,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:39:30,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:39:30,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:39:30,184 INFO L87 Difference]: Start difference. First operand 8247 states and 10266 transitions. Second operand 5 states. [2020-10-28 13:39:30,997 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:39:47,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:39:47,135 INFO L93 Difference]: Finished difference Result 16499 states and 20550 transitions. [2020-10-28 13:39:47,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:39:47,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-28 13:39:47,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:39:47,195 INFO L225 Difference]: With dead ends: 16499 [2020-10-28 13:39:47,195 INFO L226 Difference]: Without dead ends: 8258 [2020-10-28 13:39:47,219 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 [2020-10-28 13:39:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8258 states. [2020-10-28 13:39:47,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8258 to 8242. [2020-10-28 13:39:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8242 states. [2020-10-28 13:39:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8242 states to 8242 states and 10183 transitions. [2020-10-28 13:39:47,545 INFO L78 Accepts]: Start accepts. Automaton has 8242 states and 10183 transitions. Word has length 245 [2020-10-28 13:39:47,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:39:47,546 INFO L481 AbstractCegarLoop]: Abstraction has 8242 states and 10183 transitions. [2020-10-28 13:39:47,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:39:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 8242 states and 10183 transitions. [2020-10-28 13:39:47,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-28 13:39:47,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:39:47,555 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:39:47,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:39:47,555 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:39:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:39:47,556 INFO L82 PathProgramCache]: Analyzing trace with hash -328807775, now seen corresponding path program 1 times [2020-10-28 13:39:47,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:39:47,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909030927] [2020-10-28 13:39:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:39:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:47,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:47,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:48,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:52,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:52,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-28 13:39:52,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:39:52,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 13:39:52,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:52,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:39:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 13:39:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:39:52,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:39:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:52,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:52,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:39:52,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:52,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:39:52,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:52,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:52,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:52,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:52,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:39:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:52,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:52,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:39:52,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:52,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:39:52,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:52,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:52,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:52,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:52,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:52,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:39:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:53,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:53,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:39:53,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 13:39:53,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:53,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:39:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:39:53,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909030927] [2020-10-28 13:39:53,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:39:53,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:39:53,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554064752] [2020-10-28 13:39:53,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:39:53,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:39:53,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:39:53,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:39:53,330 INFO L87 Difference]: Start difference. First operand 8242 states and 10183 transitions. Second operand 5 states. [2020-10-28 13:40:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:40:09,524 INFO L93 Difference]: Finished difference Result 17379 states and 21544 transitions. [2020-10-28 13:40:09,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:40:09,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 300 [2020-10-28 13:40:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:40:09,562 INFO L225 Difference]: With dead ends: 17379 [2020-10-28 13:40:09,562 INFO L226 Difference]: Without dead ends: 9143 [2020-10-28 13:40:09,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:40:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9143 states. [2020-10-28 13:40:09,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9143 to 8694. [2020-10-28 13:40:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8694 states. [2020-10-28 13:40:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8694 states to 8694 states and 10781 transitions. [2020-10-28 13:40:09,860 INFO L78 Accepts]: Start accepts. Automaton has 8694 states and 10781 transitions. Word has length 300 [2020-10-28 13:40:09,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:40:09,861 INFO L481 AbstractCegarLoop]: Abstraction has 8694 states and 10781 transitions. [2020-10-28 13:40:09,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:40:09,861 INFO L276 IsEmpty]: Start isEmpty. Operand 8694 states and 10781 transitions. [2020-10-28 13:40:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-28 13:40:09,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:09,878 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:40:09,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:40:09,879 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:09,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1226569223, now seen corresponding path program 1 times [2020-10-28 13:40:09,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:09,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135304264] [2020-10-28 13:40:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:11,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:14,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:14,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:14,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-28 13:40:14,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:40:14,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 13:40:14,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:14,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:14,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:40:14,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:40:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:40:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:15,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:15,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:15,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:15,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:40:15,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:15,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:40:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:40:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:15,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:40:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:15,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:15,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:15,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:40:15,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:15,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:40:15,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:15,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:15,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:40:15,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:15,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:40:15,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:15,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:40:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:15,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:15,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:15,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:40:15,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:15,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:40:15,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:15,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:15,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:40:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:15,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-28 13:40:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:15,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:15,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:15,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:40:15,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:40:15,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:15,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:40:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:40:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:40:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-28 13:40:15,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135304264] [2020-10-28 13:40:15,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:40:15,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:40:15,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47392239] [2020-10-28 13:40:15,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:40:15,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:40:15,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:40:15,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:40:15,709 INFO L87 Difference]: Start difference. First operand 8694 states and 10781 transitions. Second operand 7 states. [2020-10-28 13:40:48,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:40:48,316 INFO L93 Difference]: Finished difference Result 22509 states and 28768 transitions. [2020-10-28 13:40:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:40:48,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-28 13:40:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:40:48,366 INFO L225 Difference]: With dead ends: 22509 [2020-10-28 13:40:48,366 INFO L226 Difference]: Without dead ends: 12409 [2020-10-28 13:40:48,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:40:48,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12409 states. [2020-10-28 13:40:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12409 to 11900. [2020-10-28 13:40:48,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11900 states. [2020-10-28 13:40:48,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11900 states to 11900 states and 14899 transitions. [2020-10-28 13:40:48,708 INFO L78 Accepts]: Start accepts. Automaton has 11900 states and 14899 transitions. Word has length 308 [2020-10-28 13:40:48,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:40:48,709 INFO L481 AbstractCegarLoop]: Abstraction has 11900 states and 14899 transitions. [2020-10-28 13:40:48,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:40:48,709 INFO L276 IsEmpty]: Start isEmpty. Operand 11900 states and 14899 transitions. [2020-10-28 13:40:48,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-28 13:40:48,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:48,717 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:40:48,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:40:48,717 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:48,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:48,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1809824025, now seen corresponding path program 1 times [2020-10-28 13:40:48,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:48,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844812562] [2020-10-28 13:40:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:49,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:50,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:51,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:53,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:53,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-28 13:40:53,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:40:53,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 13:40:53,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:53,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:40:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:40:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:40:53,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:53,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:53,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:53,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:53,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:53,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:53,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:40:53,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:53,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:53,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:40:53,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:53,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:40:53,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:53,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:40:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:54,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:54,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:40:54,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:54,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:40:54,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:54,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:54,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:40:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:40:54,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:54,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:40:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:54,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:54,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:40:54,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:54,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:40:54,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:54,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:40:54,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:54,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:40:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:54,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:54,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:54,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:40:54,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:54,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:40:54,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:54,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:54,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:40:54,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:40:54,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:40:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:40:54,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844812562] [2020-10-28 13:40:54,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:40:54,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:40:54,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703989785] [2020-10-28 13:40:54,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:40:54,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:40:54,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:40:54,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:40:54,419 INFO L87 Difference]: Start difference. First operand 11900 states and 14899 transitions. Second operand 7 states.