/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:39:53,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:39:53,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:39:53,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:39:53,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:39:53,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:39:53,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:39:53,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:39:53,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:39:53,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:39:53,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:39:53,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:39:53,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:39:53,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:39:53,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:39:53,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:39:53,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:39:53,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:39:53,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:39:53,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:39:53,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:39:53,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:39:53,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:39:53,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:39:53,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:39:53,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:39:53,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:39:53,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:39:53,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:39:53,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:39:53,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:39:53,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:39:53,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:39:53,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:39:53,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:39:53,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:39:53,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:39:53,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:39:53,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:39:53,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:39:53,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:39:53,885 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 13:39:53,960 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:39:53,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:39:53,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:39:53,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:39:53,970 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:39:53,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:39:53,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:39:53,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:39:53,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:39:53,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:39:53,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:39:53,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:39:53,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:39:53,974 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:39:53,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:39:53,974 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:39:53,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:39:53,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:39:53,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:39:53,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:39:53,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:39:53,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:39:53,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:39:53,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:39:53,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:39:53,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:39:53,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:39:53,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:39:53,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:39:53,977 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:39:54,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:39:54,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:39:54,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:39:54,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:39:54,519 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:39:54,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label37.c [2020-10-28 13:39:54,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d71a5167e/9c105d5e584c4aae9605b496fc2dd934/FLAG5ad8e8b42 [2020-10-28 13:39:55,507 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:39:55,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label37.c [2020-10-28 13:39:55,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d71a5167e/9c105d5e584c4aae9605b496fc2dd934/FLAG5ad8e8b42 [2020-10-28 13:39:55,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d71a5167e/9c105d5e584c4aae9605b496fc2dd934 [2020-10-28 13:39:55,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:39:55,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:39:55,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:39:55,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:39:55,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:39:55,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:39:55" (1/1) ... [2020-10-28 13:39:55,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535e3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:55, skipping insertion in model container [2020-10-28 13:39:55,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:39:55" (1/1) ... [2020-10-28 13:39:55,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:39:55,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:39:56,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:39:56,764 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:39:57,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:39:57,294 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:39:57,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:57 WrapperNode [2020-10-28 13:39:57,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:39:57,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:39:57,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:39:57,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:39:57,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:57" (1/1) ... [2020-10-28 13:39:57,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:57" (1/1) ... [2020-10-28 13:39:57,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:57" (1/1) ... [2020-10-28 13:39:57,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:57" (1/1) ... [2020-10-28 13:39:57,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:57" (1/1) ... [2020-10-28 13:39:57,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:57" (1/1) ... [2020-10-28 13:39:57,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:57" (1/1) ... [2020-10-28 13:39:57,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:39:57,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:39:57,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:39:57,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:39:57,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:57" (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 13:39:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:39:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:39:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:39:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:39:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:39:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:39:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:39:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:39:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:39:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:39:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:39:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:39:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:39:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:39:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:39:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:39:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:39:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:39:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:39:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:39:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:40:07,037 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:40:07,037 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:40:07,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:40:07 BoogieIcfgContainer [2020-10-28 13:40:07,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:40:07,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:40:07,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:40:07,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:40:07,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:39:55" (1/3) ... [2020-10-28 13:40:07,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c64ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:40:07, skipping insertion in model container [2020-10-28 13:40:07,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:57" (2/3) ... [2020-10-28 13:40:07,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c64ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:40:07, skipping insertion in model container [2020-10-28 13:40:07,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:40:07" (3/3) ... [2020-10-28 13:40:07,050 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label37.c [2020-10-28 13:40:07,063 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:40:07,069 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:40:07,084 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:40:07,119 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:40:07,119 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:40:07,119 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:40:07,119 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:40:07,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:40:07,120 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:40:07,120 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:40:07,120 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:40:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:40:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 13:40:07,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:07,201 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] [2020-10-28 13:40:07,201 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:07,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:07,213 INFO L82 PathProgramCache]: Analyzing trace with hash 452507635, now seen corresponding path program 1 times [2020-10-28 13:40:07,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:07,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114195537] [2020-10-28 13:40:07,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:07,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:08,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:08,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 13:40:08,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-28 13:40:08,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:08,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:40:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:40:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 13:40:08,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:40:08,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:08,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:08,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:08,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:08,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:40:08,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:08,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:40:08,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:08,302 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 13:40:08,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114195537] [2020-10-28 13:40:08,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:40:08,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:40:08,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577696497] [2020-10-28 13:40:08,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:40:08,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:40:08,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:40:08,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:40:08,336 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:40:22,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:40:22,714 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-28 13:40:22,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:40:22,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-28 13:40:22,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:40:22,755 INFO L225 Difference]: With dead ends: 1697 [2020-10-28 13:40:22,756 INFO L226 Difference]: Without dead ends: 1013 [2020-10-28 13:40:22,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:40:22,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-28 13:40:22,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-28 13:40:22,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-28 13:40:22,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-28 13:40:22,897 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 25 [2020-10-28 13:40:22,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:40:22,897 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-28 13:40:22,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:40:22,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-28 13:40:22,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 13:40:22,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:22,903 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:40:22,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:40:22,903 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:22,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:22,904 INFO L82 PathProgramCache]: Analyzing trace with hash -937647150, now seen corresponding path program 1 times [2020-10-28 13:40:22,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:22,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126052694] [2020-10-28 13:40:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:23,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:24,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:24,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:40:24,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:40:24,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1539 [2020-10-28 13:40:24,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:24,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:24,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:40:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:40:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:40:24,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:40:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:24,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:24,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:24,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:24,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:40:24,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:24,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:40:24,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:24,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:40:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:24,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:24,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:24,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:40:24,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:24,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 13:40:24,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:24,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:40:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:40:24,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:40:24,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:40:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:40:24,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126052694] [2020-10-28 13:40:24,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:40:24,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:40:24,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727944994] [2020-10-28 13:40:24,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:40:24,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:40:24,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:40:24,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:40:24,936 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-28 13:40:25,091 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:40:41,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:40:41,553 INFO L93 Difference]: Finished difference Result 2964 states and 4573 transitions. [2020-10-28 13:40:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:40:41,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-28 13:40:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:40:41,566 INFO L225 Difference]: With dead ends: 2964 [2020-10-28 13:40:41,567 INFO L226 Difference]: Without dead ends: 1967 [2020-10-28 13:40:41,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:40:41,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-10-28 13:40:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1915. [2020-10-28 13:40:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-28 13:40:41,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2483 transitions. [2020-10-28 13:40:41,651 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2483 transitions. Word has length 96 [2020-10-28 13:40:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:40:41,652 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states and 2483 transitions. [2020-10-28 13:40:41,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:40:41,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2483 transitions. [2020-10-28 13:40:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 13:40:41,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:41,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:40:41,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:40:41,656 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:41,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:41,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1150236473, now seen corresponding path program 1 times [2020-10-28 13:40:41,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:41,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163139557] [2020-10-28 13:40:41,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:41,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:41,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:40:41,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:41,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-28 13:40:41,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:41,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:40:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:40:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 13:40:41,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:42,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:42,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:42,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:42,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:42,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:40:42,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:42,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:40:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:42,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:40:42,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:40:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:42,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:42,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:42,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:40:42,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:42,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:40:42,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:42,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:40:42,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:40:42,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163139557] [2020-10-28 13:40:42,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:40:42,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:40:42,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106211226] [2020-10-28 13:40:42,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:40:42,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:40:42,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:40:42,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:40:42,385 INFO L87 Difference]: Start difference. First operand 1915 states and 2483 transitions. Second operand 5 states. [2020-10-28 13:40:57,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:40:57,804 INFO L93 Difference]: Finished difference Result 4732 states and 6292 transitions. [2020-10-28 13:40:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:40:57,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-28 13:40:57,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:40:57,820 INFO L225 Difference]: With dead ends: 4732 [2020-10-28 13:40:57,820 INFO L226 Difference]: Without dead ends: 2377 [2020-10-28 13:40:57,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:40:57,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2020-10-28 13:40:57,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2358. [2020-10-28 13:40:57,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2358 states. [2020-10-28 13:40:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 2901 transitions. [2020-10-28 13:40:57,911 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 2901 transitions. Word has length 99 [2020-10-28 13:40:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:40:57,912 INFO L481 AbstractCegarLoop]: Abstraction has 2358 states and 2901 transitions. [2020-10-28 13:40:57,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:40:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 2901 transitions. [2020-10-28 13:40:57,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-28 13:40:57,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:57,935 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:40:57,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:40:57,935 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:57,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:57,936 INFO L82 PathProgramCache]: Analyzing trace with hash 802535767, now seen corresponding path program 1 times [2020-10-28 13:40:57,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:57,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885203195] [2020-10-28 13:40:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:59,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:59,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 13:40:59,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:40:59,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-10-28 13:40:59,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:59,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:59,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:40:59,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:40:59,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:40:59,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:59,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:59,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:59,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:59,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:59,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:40:59,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:59,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:40:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:40:59,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:40:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:59,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:59,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:59,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:40:59,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:59,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:40:59,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:59,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:40:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:40:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:59,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:59,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:59,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:40:59,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 13:40:59,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:59,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:40:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:40:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:40:59,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:41:00,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885203195] [2020-10-28 13:41:00,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:41:00,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:41:00,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542892253] [2020-10-28 13:41:00,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:41:00,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:00,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:41:00,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:41:00,075 INFO L87 Difference]: Start difference. First operand 2358 states and 2901 transitions. Second operand 7 states. [2020-10-28 13:41:13,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:41:13,288 INFO L93 Difference]: Finished difference Result 6085 states and 7753 transitions. [2020-10-28 13:41:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:41:13,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-28 13:41:13,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:41:13,315 INFO L225 Difference]: With dead ends: 6085 [2020-10-28 13:41:13,315 INFO L226 Difference]: Without dead ends: 3733 [2020-10-28 13:41:13,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:41:13,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2020-10-28 13:41:13,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3720. [2020-10-28 13:41:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3720 states. [2020-10-28 13:41:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 4554 transitions. [2020-10-28 13:41:13,458 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 4554 transitions. Word has length 185 [2020-10-28 13:41:13,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:41:13,460 INFO L481 AbstractCegarLoop]: Abstraction has 3720 states and 4554 transitions. [2020-10-28 13:41:13,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:41:13,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 4554 transitions. [2020-10-28 13:41:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-28 13:41:13,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:41:13,464 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:41:13,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:41:13,465 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:41:13,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:41:13,465 INFO L82 PathProgramCache]: Analyzing trace with hash -472398789, now seen corresponding path program 1 times [2020-10-28 13:41:13,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:41:13,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632358003] [2020-10-28 13:41:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:41:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:16,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:17,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:17,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:41:17,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:41:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4447 [2020-10-28 13:41:17,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:17,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:41:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:41:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 13:41:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:18,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:41:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:18,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:18,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:18,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:41:18,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:18,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:41:18,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:18,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:18,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:18,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:18,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:18,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:18,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:41:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:18,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:18,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:18,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:41:18,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:18,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:41:18,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:18,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:18,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:18,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:18,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:41:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:18,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:18,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:18,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:41:18,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:18,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:41:18,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:18,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:41:18,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:41:18,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632358003] [2020-10-28 13:41:18,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:41:18,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:41:18,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393062564] [2020-10-28 13:41:18,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:41:18,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:18,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:41:18,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:41:18,434 INFO L87 Difference]: Start difference. First operand 3720 states and 4554 transitions. Second operand 5 states. [2020-10-28 13:41:30,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:41:30,904 INFO L93 Difference]: Finished difference Result 10518 states and 13057 transitions. [2020-10-28 13:41:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:41:30,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-28 13:41:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:41:30,944 INFO L225 Difference]: With dead ends: 10518 [2020-10-28 13:41:30,945 INFO L226 Difference]: Without dead ends: 6803 [2020-10-28 13:41:30,956 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 13:41:30,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6803 states. [2020-10-28 13:41:31,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6803 to 5928. [2020-10-28 13:41:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5928 states. [2020-10-28 13:41:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5928 states to 5928 states and 7104 transitions. [2020-10-28 13:41:31,135 INFO L78 Accepts]: Start accepts. Automaton has 5928 states and 7104 transitions. Word has length 187 [2020-10-28 13:41:31,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:41:31,137 INFO L481 AbstractCegarLoop]: Abstraction has 5928 states and 7104 transitions. [2020-10-28 13:41:31,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:41:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5928 states and 7104 transitions. [2020-10-28 13:41:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-28 13:41:31,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:41:31,140 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:41:31,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:41:31,141 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:41:31,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:41:31,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1958398331, now seen corresponding path program 1 times [2020-10-28 13:41:31,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:41:31,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481127074] [2020-10-28 13:41:31,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:41:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:31,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:31,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:31,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:36,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:36,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-28 13:41:36,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:41:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 13:41:36,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:36,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:41:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:41:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 13:41:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:36,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:41:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:36,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:36,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:36,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:41:36,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:36,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:41:36,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:36,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:36,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:36,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:41:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:36,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:36,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:36,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:41:36,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 13:41:36,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:36,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:41:36,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:36,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:41:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:36,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:36,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:36,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:36,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:41:36,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:41:36,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-28 13:41:36,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:36,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:41:36,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:41:36,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481127074] [2020-10-28 13:41:36,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:41:36,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:41:36,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452546336] [2020-10-28 13:41:36,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:41:36,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:36,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:41:36,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:41:36,938 INFO L87 Difference]: Start difference. First operand 5928 states and 7104 transitions. Second operand 5 states. [2020-10-28 13:41:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:41:47,945 INFO L93 Difference]: Finished difference Result 12294 states and 14980 transitions. [2020-10-28 13:41:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:41:47,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-28 13:41:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:41:47,983 INFO L225 Difference]: With dead ends: 12294 [2020-10-28 13:41:47,983 INFO L226 Difference]: Without dead ends: 6372 [2020-10-28 13:41:48,047 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 13:41:48,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6372 states. [2020-10-28 13:41:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6372 to 6363. [2020-10-28 13:41:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6363 states. [2020-10-28 13:41:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6363 states to 6363 states and 7701 transitions. [2020-10-28 13:41:48,242 INFO L78 Accepts]: Start accepts. Automaton has 6363 states and 7701 transitions. Word has length 198 [2020-10-28 13:41:48,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:41:48,242 INFO L481 AbstractCegarLoop]: Abstraction has 6363 states and 7701 transitions. [2020-10-28 13:41:48,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:41:48,243 INFO L276 IsEmpty]: Start isEmpty. Operand 6363 states and 7701 transitions. [2020-10-28 13:41:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-28 13:41:48,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:41:48,249 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:41:48,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:41:48,249 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:41:48,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:41:48,250 INFO L82 PathProgramCache]: Analyzing trace with hash 502369536, now seen corresponding path program 1 times [2020-10-28 13:41:48,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:41:48,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636318363] [2020-10-28 13:41:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:41:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:50,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:50,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:52,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:52,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-28 13:41:52,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:41:52,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3825 [2020-10-28 13:41:52,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:52,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:52,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:41:52,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:41:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:41:52,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:52,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:41:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:52,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:52,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:52,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:41:52,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:41:52,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:52,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:52,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:52,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:41:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:52,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:52,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:41:52,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:41:52,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:52,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:41:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:52,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:52,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:52,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:41:52,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:52,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:41:52,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:52,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:41:52,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:52,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:41:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:52,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:52,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:41:52,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:41:52,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 13:41:52,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:52,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:52,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:41:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-28 13:41:52,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636318363] [2020-10-28 13:41:52,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:41:52,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:41:52,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543757278] [2020-10-28 13:41:52,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:41:52,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:52,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:41:52,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:41:52,828 INFO L87 Difference]: Start difference. First operand 6363 states and 7701 transitions. Second operand 5 states. [2020-10-28 13:42:06,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:06,244 INFO L93 Difference]: Finished difference Result 15807 states and 19420 transitions. [2020-10-28 13:42:06,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:42:06,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-28 13:42:06,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:06,287 INFO L225 Difference]: With dead ends: 15807 [2020-10-28 13:42:06,288 INFO L226 Difference]: Without dead ends: 8565 [2020-10-28 13:42:06,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 13:42:06,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8565 states. [2020-10-28 13:42:06,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8565 to 8558. [2020-10-28 13:42:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8558 states. [2020-10-28 13:42:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8558 states to 8558 states and 9931 transitions. [2020-10-28 13:42:06,526 INFO L78 Accepts]: Start accepts. Automaton has 8558 states and 9931 transitions. Word has length 269 [2020-10-28 13:42:06,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:06,528 INFO L481 AbstractCegarLoop]: Abstraction has 8558 states and 9931 transitions. [2020-10-28 13:42:06,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:42:06,528 INFO L276 IsEmpty]: Start isEmpty. Operand 8558 states and 9931 transitions. [2020-10-28 13:42:06,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-28 13:42:06,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:06,537 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:42:06,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:42:06,537 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:06,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:06,538 INFO L82 PathProgramCache]: Analyzing trace with hash -545273155, now seen corresponding path program 1 times [2020-10-28 13:42:06,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:06,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843865331] [2020-10-28 13:42:06,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:09,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:09,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 13:42:09,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:42:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2749 [2020-10-28 13:42:09,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:09,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:42:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:42:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:09,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:09,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:09,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:09,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:09,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:09,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:42:09,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:09,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:09,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:09,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:09,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:42:09,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:09,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:42:09,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:09,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:42:09,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:09,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:42:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:09,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:10,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:10,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:42:10,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:10,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-28 13:42:10,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:10,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:42:10,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:42:10,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:42:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:10,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:10,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:42:10,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:10,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:42:10,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:10,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 13:42:10,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:10,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 139 proven. 87 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-28 13:42:10,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843865331] [2020-10-28 13:42:10,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:42:10,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:42:10,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616589375] [2020-10-28 13:42:10,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:42:10,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:10,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:42:10,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:42:10,970 INFO L87 Difference]: Start difference. First operand 8558 states and 9931 transitions. Second operand 8 states. [2020-10-28 13:42:17,922 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 13:42:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:28,290 INFO L93 Difference]: Finished difference Result 18529 states and 21527 transitions. [2020-10-28 13:42:28,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:42:28,294 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 309 [2020-10-28 13:42:28,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:28,330 INFO L225 Difference]: With dead ends: 18529 [2020-10-28 13:42:28,330 INFO L226 Difference]: Without dead ends: 9977 [2020-10-28 13:42:28,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:42:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9977 states. [2020-10-28 13:42:28,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9977 to 9958. [2020-10-28 13:42:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9958 states. [2020-10-28 13:42:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9958 states to 9958 states and 11552 transitions. [2020-10-28 13:42:28,565 INFO L78 Accepts]: Start accepts. Automaton has 9958 states and 11552 transitions. Word has length 309 [2020-10-28 13:42:28,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:28,566 INFO L481 AbstractCegarLoop]: Abstraction has 9958 states and 11552 transitions. [2020-10-28 13:42:28,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:42:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand 9958 states and 11552 transitions. [2020-10-28 13:42:28,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-28 13:42:28,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:28,575 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:42:28,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:42:28,575 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:28,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:28,576 INFO L82 PathProgramCache]: Analyzing trace with hash -2023121483, now seen corresponding path program 1 times [2020-10-28 13:42:28,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:28,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130933905] [2020-10-28 13:42:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:28,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:33,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:33,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-28 13:42:33,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:42:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4376 [2020-10-28 13:42:33,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:33,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-28 13:42:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 13:42:33,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:33,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:33,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:33,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:33,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:33,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:42:33,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:33,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:33,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:33,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:33,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:33,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:33,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:33,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:33,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:33,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:42:33,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:42:33,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:33,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:33,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:33,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:42:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:33,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:33,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:33,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-28 13:42:33,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 13:42:33,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:33,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-28 13:42:33,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:42:33,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130933905] [2020-10-28 13:42:33,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:42:33,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:42:33,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645684702] [2020-10-28 13:42:33,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:42:33,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:33,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:42:33,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:42:33,900 INFO L87 Difference]: Start difference. First operand 9958 states and 11552 transitions. Second operand 5 states. [2020-10-28 13:42:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:49,743 INFO L93 Difference]: Finished difference Result 23054 states and 27278 transitions. [2020-10-28 13:42:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:42:49,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-28 13:42:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:49,802 INFO L225 Difference]: With dead ends: 23054 [2020-10-28 13:42:49,803 INFO L226 Difference]: Without dead ends: 13102 [2020-10-28 13:42:49,833 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 13:42:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13102 states. [2020-10-28 13:42:50,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13102 to 12209. [2020-10-28 13:42:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12209 states. [2020-10-28 13:42:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12209 states to 12209 states and 14376 transitions. [2020-10-28 13:42:50,128 INFO L78 Accepts]: Start accepts. Automaton has 12209 states and 14376 transitions. Word has length 322 [2020-10-28 13:42:50,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:50,130 INFO L481 AbstractCegarLoop]: Abstraction has 12209 states and 14376 transitions. [2020-10-28 13:42:50,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:42:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 12209 states and 14376 transitions. [2020-10-28 13:42:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-28 13:42:50,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:50,140 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:42:50,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:42:50,141 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:50,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:50,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1343557032, now seen corresponding path program 1 times [2020-10-28 13:42:50,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:50,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680795488] [2020-10-28 13:42:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:50,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:50,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:51,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:52,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:52,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:53,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:55,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:55,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-28 13:42:55,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:42:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4835 [2020-10-28 13:42:55,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:55,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:42:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-28 13:42:55,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:55,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:55,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:55,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:55,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:55,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:42:55,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:55,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:42:55,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:55,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:55,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:55,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:42:55,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:55,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 13:42:55,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:55,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:42:55,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:55,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:42:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:55,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:55,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:55,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:42:55,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:42:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 13:42:55,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:55,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-28 13:42:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 13:42:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:55,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-28 13:42:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:55,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:55,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:55,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:42:55,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:55,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:42:55,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:55,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:55,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:55,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 13:42:55,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:55,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-28 13:42:55,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680795488] [2020-10-28 13:42:55,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:42:55,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:42:55,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513350440] [2020-10-28 13:42:55,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:42:55,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:55,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:42:55,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:42:55,892 INFO L87 Difference]: Start difference. First operand 12209 states and 14376 transitions. Second operand 6 states. [2020-10-28 13:42:56,034 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:43:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:08,271 INFO L93 Difference]: Finished difference Result 24396 states and 28775 transitions. [2020-10-28 13:43:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:43:08,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 335 [2020-10-28 13:43:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:08,335 INFO L225 Difference]: With dead ends: 24396 [2020-10-28 13:43:08,336 INFO L226 Difference]: Without dead ends: 12193 [2020-10-28 13:43:08,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:43:08,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12193 states. [2020-10-28 13:43:08,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12193 to 12180. [2020-10-28 13:43:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12180 states. [2020-10-28 13:43:08,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12180 states to 12180 states and 14310 transitions. [2020-10-28 13:43:08,643 INFO L78 Accepts]: Start accepts. Automaton has 12180 states and 14310 transitions. Word has length 335 [2020-10-28 13:43:08,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:08,644 INFO L481 AbstractCegarLoop]: Abstraction has 12180 states and 14310 transitions. [2020-10-28 13:43:08,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:43:08,645 INFO L276 IsEmpty]: Start isEmpty. Operand 12180 states and 14310 transitions. [2020-10-28 13:43:08,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-28 13:43:08,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:08,656 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:43:08,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:43:08,656 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:08,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:08,657 INFO L82 PathProgramCache]: Analyzing trace with hash -938438390, now seen corresponding path program 1 times [2020-10-28 13:43:08,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:08,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471615657] [2020-10-28 13:43:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:08,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:08,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:11,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:13,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:13,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-28 13:43:13,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:43:13,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 13:43:13,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:13,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:13,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:43:13,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-28 13:43:13,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 13:43:13,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:13,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:43:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:13,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:13,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:43:13,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:43:13,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:13,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:13,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:43:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:14,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:14,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:43:14,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:14,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:43:14,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:14,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:14,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:14,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:43:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:14,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:14,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:14,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 13:43:14,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:14,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:43:14,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:14,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-28 13:43:14,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:14,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:43:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:14,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:14,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:43:14,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:43:14,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-28 13:43:14,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:14,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:43:14,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:43:14,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:43:14,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 205 proven. 18 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-28 13:43:14,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471615657] [2020-10-28 13:43:14,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:43:14,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:43:14,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906727946] [2020-10-28 13:43:14,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:43:14,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:43:14,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:43:14,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:43:14,775 INFO L87 Difference]: Start difference. First operand 12180 states and 14310 transitions. Second operand 7 states. [2020-10-28 13:43:19,082 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:43:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:33,427 INFO L93 Difference]: Finished difference Result 29010 states and 34936 transitions. [2020-10-28 13:43:33,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:43:33,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 352 [2020-10-28 13:43:33,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:33,488 INFO L225 Difference]: With dead ends: 29010 [2020-10-28 13:43:33,488 INFO L226 Difference]: Without dead ends: 15935 [2020-10-28 13:43:33,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:43:33,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15935 states. [2020-10-28 13:43:33,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15935 to 15870. [2020-10-28 13:43:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15870 states. [2020-10-28 13:43:33,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15870 states to 15870 states and 18813 transitions. [2020-10-28 13:43:33,858 INFO L78 Accepts]: Start accepts. Automaton has 15870 states and 18813 transitions. Word has length 352 [2020-10-28 13:43:33,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:33,859 INFO L481 AbstractCegarLoop]: Abstraction has 15870 states and 18813 transitions. [2020-10-28 13:43:33,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:43:33,860 INFO L276 IsEmpty]: Start isEmpty. Operand 15870 states and 18813 transitions. [2020-10-28 13:43:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-28 13:43:33,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:33,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:43:33,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:43:33,873 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:33,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:33,874 INFO L82 PathProgramCache]: Analyzing trace with hash 552028334, now seen corresponding path program 1 times [2020-10-28 13:43:33,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:33,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283846236] [2020-10-28 13:43:33,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:34,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:34,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:34,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:35,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:39,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:39,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-28 13:43:39,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:43:39,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 13:43:39,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:39,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:43:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 354 [2020-10-28 13:43:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 13:43:39,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:39,256 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:43:39,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:43:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:39,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:39,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:43:39,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:43:39,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:39,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:39,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:43:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:39,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:39,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:43:39,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:39,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:43:39,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:39,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:39,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:43:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:39,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:39,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:43:39,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:39,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:43:39,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:39,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:39,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-28 13:43:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:39,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:39,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:39,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:43:39,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:39,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:43:39,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:39,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:43:39,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-28 13:43:39,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283846236] [2020-10-28 13:43:39,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:43:39,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:43:39,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593865987] [2020-10-28 13:43:39,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:43:39,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:43:39,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:43:39,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:43:39,858 INFO L87 Difference]: Start difference. First operand 15870 states and 18813 transitions. Second operand 5 states. [2020-10-28 13:43:40,000 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 68