/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:48:54,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:48:54,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:48:54,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:48:54,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:48:54,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:48:54,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:48:54,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:48:54,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:48:54,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:48:54,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:48:54,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:48:54,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:48:54,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:48:54,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:48:54,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:48:54,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:48:54,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:48:54,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:48:54,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:48:54,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:48:54,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:48:54,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:48:54,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:48:54,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:48:54,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:48:54,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:48:54,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:48:54,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:48:54,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:48:54,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:48:54,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:48:54,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:48:54,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:48:54,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:48:54,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:48:54,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:48:54,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:48:54,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:48:54,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:48:54,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:48:54,657 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 [2020-10-26 22:48:54,716 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:48:54,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:48:54,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:48:54,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:48:54,719 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:48:54,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:48:54,720 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:48:54,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:48:54,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:48:54,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:48:54,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:48:54,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:48:54,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:48:54,723 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:48:54,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:48:54,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:48:54,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:48:54,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:48:54,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:48:54,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:48:54,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:48:54,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:48:54,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:48:54,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:48:54,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:48:54,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:48:54,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:48:54,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:48:54,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:48:54,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:48:55,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:48:55,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:48:55,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:48:55,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:48:55,256 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:48:55,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label11.c [2020-10-26 22:48:55,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ca7378f5/627871f45ba948c49d5ab58365c66103/FLAGfecb7fb18 [2020-10-26 22:48:56,574 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:48:56,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label11.c [2020-10-26 22:48:56,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ca7378f5/627871f45ba948c49d5ab58365c66103/FLAGfecb7fb18 [2020-10-26 22:48:56,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ca7378f5/627871f45ba948c49d5ab58365c66103 [2020-10-26 22:48:56,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:48:56,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:48:56,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:48:56,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:48:56,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:48:56,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:48:56" (1/1) ... [2020-10-26 22:48:56,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c15857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:48:56, skipping insertion in model container [2020-10-26 22:48:56,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:48:56" (1/1) ... [2020-10-26 22:48:56,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:48:57,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:48:58,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:48:58,536 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:48:59,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:48:59,287 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:48:59,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:48:59 WrapperNode [2020-10-26 22:48:59,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:48:59,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:48:59,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:48:59,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:48:59,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:48:59" (1/1) ... [2020-10-26 22:48:59,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:48:59" (1/1) ... [2020-10-26 22:48:59,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:48:59" (1/1) ... [2020-10-26 22:48:59,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:48:59" (1/1) ... [2020-10-26 22:48:59,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:48:59" (1/1) ... [2020-10-26 22:48:59,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:48:59" (1/1) ... [2020-10-26 22:48:59,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:48:59" (1/1) ... [2020-10-26 22:48:59,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:48:59,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:48:59,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:48:59,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:48:59,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:48:59" (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 [2020-10-26 22:48:59,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:48:59,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:48:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:48:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:48:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 22:48:59,879 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 22:48:59,879 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 22:48:59,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:48:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:48:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 22:48:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 22:48:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 22:48:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:48:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:48:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:48:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:48:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:48:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:48:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:48:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:48:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:48:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:48:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:48:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:48:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:49:05,768 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:49:05,768 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:49:05,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:49:05 BoogieIcfgContainer [2020-10-26 22:49:05,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:49:05,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:49:05,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:49:05,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:49:05,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:48:56" (1/3) ... [2020-10-26 22:49:05,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2488bb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:49:05, skipping insertion in model container [2020-10-26 22:49:05,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:48:59" (2/3) ... [2020-10-26 22:49:05,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2488bb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:49:05, skipping insertion in model container [2020-10-26 22:49:05,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:49:05" (3/3) ... [2020-10-26 22:49:05,781 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label11.c [2020-10-26 22:49:05,794 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:49:05,800 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:49:05,815 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:49:05,851 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:49:05,852 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:49:05,852 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:49:05,852 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:49:05,852 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:49:05,852 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:49:05,852 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:49:05,853 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:49:05,893 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-26 22:49:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-26 22:49:05,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:49:05,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:49:05,904 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:49:05,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:49:05,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1005932524, now seen corresponding path program 1 times [2020-10-26 22:49:05,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:49:05,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723964827] [2020-10-26 22:49:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:49:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:06,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:06,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:06,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-26 22:49:06,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:06,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-26 22:49:06,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:49:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:49:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-26 22:49:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:49:06,957 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 22:49:06,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:49:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:06,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:06,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:49:06,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:06,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:49:06,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:49:06,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:49:07,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723964827] [2020-10-26 22:49:07,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:49:07,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:49:07,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802207010] [2020-10-26 22:49:07,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:49:07,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:07,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:49:07,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:49:07,048 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-26 22:49:07,202 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 22:49:16,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:49:16,959 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-26 22:49:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:49:16,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-26 22:49:16,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:49:16,996 INFO L225 Difference]: With dead ends: 2476 [2020-10-26 22:49:16,996 INFO L226 Difference]: Without dead ends: 1569 [2020-10-26 22:49:17,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:49:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-26 22:49:17,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-26 22:49:17,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-26 22:49:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-26 22:49:17,223 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 46 [2020-10-26 22:49:17,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:49:17,226 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-26 22:49:17,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:49:17,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-26 22:49:17,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-26 22:49:17,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:49:17,236 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:49:17,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:49:17,237 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:49:17,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:49:17,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1926682114, now seen corresponding path program 1 times [2020-10-26 22:49:17,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:49:17,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641543992] [2020-10-26 22:49:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:49:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:17,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:18,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:18,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:18,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:49:18,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:49:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1551 [2020-10-26 22:49:18,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:49:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:49:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 22:49:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:49:18,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:49:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:18,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:19,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:19,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:49:19,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:19,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 22:49:19,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:49:19,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:19,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:49:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:19,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:19,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:19,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:19,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:49:19,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:49:19,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 22:49:19,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:19,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:49:19,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:49:19,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:49:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:49:19,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641543992] [2020-10-26 22:49:19,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:49:19,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:49:19,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679863178] [2020-10-26 22:49:19,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:49:19,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:19,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:49:19,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:49:19,358 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 6 states. [2020-10-26 22:49:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:49:30,084 INFO L93 Difference]: Finished difference Result 4692 states and 8285 transitions. [2020-10-26 22:49:30,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 22:49:30,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-26 22:49:30,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:49:30,115 INFO L225 Difference]: With dead ends: 4692 [2020-10-26 22:49:30,115 INFO L226 Difference]: Without dead ends: 3144 [2020-10-26 22:49:30,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:49:30,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2020-10-26 22:49:30,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 3121. [2020-10-26 22:49:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3121 states. [2020-10-26 22:49:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4602 transitions. [2020-10-26 22:49:30,230 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4602 transitions. Word has length 115 [2020-10-26 22:49:30,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:49:30,231 INFO L481 AbstractCegarLoop]: Abstraction has 3121 states and 4602 transitions. [2020-10-26 22:49:30,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:49:30,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4602 transitions. [2020-10-26 22:49:30,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-26 22:49:30,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:49:30,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:49:30,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:49:30,238 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:49:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:49:30,240 INFO L82 PathProgramCache]: Analyzing trace with hash 215966258, now seen corresponding path program 1 times [2020-10-26 22:49:30,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:49:30,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864161293] [2020-10-26 22:49:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:49:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:30,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:30,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:30,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:30,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-26 22:49:30,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:49:30,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-26 22:49:30,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:49:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-26 22:49:30,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:49:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:30,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:30,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:30,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:49:30,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:30,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:49:30,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:49:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:49:30,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:30,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:49:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:30,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:30,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:49:30,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:30,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 22:49:30,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:49:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:49:30,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864161293] [2020-10-26 22:49:30,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:49:30,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:49:30,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761064637] [2020-10-26 22:49:30,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:49:30,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:30,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:49:30,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:49:30,965 INFO L87 Difference]: Start difference. First operand 3121 states and 4602 transitions. Second operand 5 states. [2020-10-26 22:49:38,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:49:38,927 INFO L93 Difference]: Finished difference Result 6314 states and 9317 transitions. [2020-10-26 22:49:38,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:49:38,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-26 22:49:38,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:49:38,951 INFO L225 Difference]: With dead ends: 6314 [2020-10-26 22:49:38,951 INFO L226 Difference]: Without dead ends: 3144 [2020-10-26 22:49:38,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:49:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2020-10-26 22:49:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 3121. [2020-10-26 22:49:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3121 states. [2020-10-26 22:49:39,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4350 transitions. [2020-10-26 22:49:39,052 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4350 transitions. Word has length 121 [2020-10-26 22:49:39,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:49:39,053 INFO L481 AbstractCegarLoop]: Abstraction has 3121 states and 4350 transitions. [2020-10-26 22:49:39,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:49:39,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4350 transitions. [2020-10-26 22:49:39,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-26 22:49:39,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:49:39,056 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:49:39,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:49:39,056 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:49:39,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:49:39,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1130242148, now seen corresponding path program 1 times [2020-10-26 22:49:39,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:49:39,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107640245] [2020-10-26 22:49:39,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:49:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:39,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:39,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:39,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 22:49:39,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:49:39,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 826 [2020-10-26 22:49:39,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:39,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:49:39,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:49:39,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 22:49:39,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:40,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:49:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:40,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:40,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:40,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:49:40,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:40,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:49:40,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:49:40,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:40,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:49:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:40,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:40,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:40,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 22:49:40,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:40,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 22:49:40,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:49:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:49:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:49:40,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107640245] [2020-10-26 22:49:40,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:49:40,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:49:40,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527373366] [2020-10-26 22:49:40,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:49:40,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:40,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:49:40,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:49:40,283 INFO L87 Difference]: Start difference. First operand 3121 states and 4350 transitions. Second operand 7 states. [2020-10-26 22:49:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:49:52,064 INFO L93 Difference]: Finished difference Result 9578 states and 13497 transitions. [2020-10-26 22:49:52,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:49:52,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-26 22:49:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:49:52,104 INFO L225 Difference]: With dead ends: 9578 [2020-10-26 22:49:52,105 INFO L226 Difference]: Without dead ends: 6463 [2020-10-26 22:49:52,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:49:52,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6463 states. [2020-10-26 22:49:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6463 to 6302. [2020-10-26 22:49:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6302 states. [2020-10-26 22:49:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6302 states to 6302 states and 8143 transitions. [2020-10-26 22:49:52,345 INFO L78 Accepts]: Start accepts. Automaton has 6302 states and 8143 transitions. Word has length 122 [2020-10-26 22:49:52,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:49:52,347 INFO L481 AbstractCegarLoop]: Abstraction has 6302 states and 8143 transitions. [2020-10-26 22:49:52,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:49:52,348 INFO L276 IsEmpty]: Start isEmpty. Operand 6302 states and 8143 transitions. [2020-10-26 22:49:52,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-26 22:49:52,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:49:52,351 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:49:52,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:49:52,351 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:49:52,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:49:52,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1007667322, now seen corresponding path program 1 times [2020-10-26 22:49:52,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:49:52,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245160612] [2020-10-26 22:49:52,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:49:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:52,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:52,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:53,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:53,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-26 22:49:53,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:49:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-26 22:49:53,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:49:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:49:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 22:49:53,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:49:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:53,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:53,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:49:53,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:49:53,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:53,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:53,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:49:53,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:53,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:49:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:53,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:53,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:53,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 22:49:53,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:53,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-26 22:49:53,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:49:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 22:49:53,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:49:53,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245160612] [2020-10-26 22:49:53,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:49:53,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:49:53,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206896984] [2020-10-26 22:49:53,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:49:53,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:53,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:49:53,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:49:53,811 INFO L87 Difference]: Start difference. First operand 6302 states and 8143 transitions. Second operand 7 states. [2020-10-26 22:50:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:50:08,687 INFO L93 Difference]: Finished difference Result 19320 states and 25542 transitions. [2020-10-26 22:50:08,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:50:08,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-26 22:50:08,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:50:08,747 INFO L225 Difference]: With dead ends: 19320 [2020-10-26 22:50:08,747 INFO L226 Difference]: Without dead ends: 13024 [2020-10-26 22:50:08,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:50:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13024 states. [2020-10-26 22:50:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13024 to 12031. [2020-10-26 22:50:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12031 states. [2020-10-26 22:50:09,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12031 states to 12031 states and 14873 transitions. [2020-10-26 22:50:09,135 INFO L78 Accepts]: Start accepts. Automaton has 12031 states and 14873 transitions. Word has length 149 [2020-10-26 22:50:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:50:09,135 INFO L481 AbstractCegarLoop]: Abstraction has 12031 states and 14873 transitions. [2020-10-26 22:50:09,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:50:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 12031 states and 14873 transitions. [2020-10-26 22:50:09,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-26 22:50:09,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:50:09,142 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:50:09,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:50:09,142 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:50:09,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:50:09,143 INFO L82 PathProgramCache]: Analyzing trace with hash -2001222716, now seen corresponding path program 1 times [2020-10-26 22:50:09,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:50:09,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083085421] [2020-10-26 22:50:09,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:50:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:09,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:09,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:12,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:12,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-26 22:50:12,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:50:12,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3492 [2020-10-26 22:50:12,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:50:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:50:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-26 22:50:12,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:50:12,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:50:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:12,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:12,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:50:12,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:50:12,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 22:50:12,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:50:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:50:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:50:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:50:12,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:50:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:13,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:13,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:13,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:50:13,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:50:13,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-26 22:50:13,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:13,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:50:13,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:50:13,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-26 22:50:13,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:50:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:50:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:13,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:13,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:13,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:13,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:50:13,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:50:13,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-26 22:50:13,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:50:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:50:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:50:13,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:50:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-26 22:50:14,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083085421] [2020-10-26 22:50:14,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:50:14,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:50:14,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2632685] [2020-10-26 22:50:14,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:50:14,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:50:14,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:50:14,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:50:14,399 INFO L87 Difference]: Start difference. First operand 12031 states and 14873 transitions. Second operand 8 states. [2020-10-26 22:50:33,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:50:33,131 INFO L93 Difference]: Finished difference Result 32885 states and 41315 transitions. [2020-10-26 22:50:33,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:50:33,133 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 280 [2020-10-26 22:50:33,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:50:33,211 INFO L225 Difference]: With dead ends: 32885 [2020-10-26 22:50:33,211 INFO L226 Difference]: Without dead ends: 20860 [2020-10-26 22:50:33,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:50:33,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20860 states. [2020-10-26 22:50:33,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20860 to 17636. [2020-10-26 22:50:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17636 states. [2020-10-26 22:50:33,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17636 states to 17636 states and 22410 transitions. [2020-10-26 22:50:33,757 INFO L78 Accepts]: Start accepts. Automaton has 17636 states and 22410 transitions. Word has length 280 [2020-10-26 22:50:33,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:50:33,758 INFO L481 AbstractCegarLoop]: Abstraction has 17636 states and 22410 transitions. [2020-10-26 22:50:33,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:50:33,758 INFO L276 IsEmpty]: Start isEmpty. Operand 17636 states and 22410 transitions. [2020-10-26 22:50:33,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-26 22:50:33,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:50:33,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:50:33,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:50:33,766 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:50:33,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:50:33,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1191376562, now seen corresponding path program 1 times [2020-10-26 22:50:33,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:50:33,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738492216] [2020-10-26 22:50:33,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:50:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:34,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:38,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:38,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-26 22:50:38,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:50:38,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-26 22:50:38,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:50:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:50:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 22:50:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:50:39,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:50:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:39,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:39,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:50:39,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:50:39,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:50:39,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:50:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:50:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:50:39,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:50:39,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:50:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:39,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:39,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 22:50:39,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:50:39,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-26 22:50:39,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:50:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:50:39,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 22:50:39,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:50:39,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-26 22:50:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:39,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:40,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:40,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 22:50:40,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:50:40,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 22:50:40,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:50:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-26 22:50:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:50:40,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:50:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 76 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:50:40,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738492216] [2020-10-26 22:50:40,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:50:40,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:50:40,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874837265] [2020-10-26 22:50:40,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:50:40,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:50:40,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:50:40,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:50:40,379 INFO L87 Difference]: Start difference. First operand 17636 states and 22410 transitions. Second operand 7 states. [2020-10-26 22:50:54,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:50:54,235 INFO L93 Difference]: Finished difference Result 40193 states and 51057 transitions. [2020-10-26 22:50:54,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:50:54,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-26 22:50:54,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:50:54,325 INFO L225 Difference]: With dead ends: 40193 [2020-10-26 22:50:54,325 INFO L226 Difference]: Without dead ends: 22563 [2020-10-26 22:50:54,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:50:54,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22563 states. [2020-10-26 22:50:54,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22563 to 22362. [2020-10-26 22:50:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22362 states. [2020-10-26 22:50:54,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22362 states to 22362 states and 27634 transitions. [2020-10-26 22:50:54,928 INFO L78 Accepts]: Start accepts. Automaton has 22362 states and 27634 transitions. Word has length 291 [2020-10-26 22:50:54,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:50:54,929 INFO L481 AbstractCegarLoop]: Abstraction has 22362 states and 27634 transitions. [2020-10-26 22:50:54,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:50:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 22362 states and 27634 transitions. [2020-10-26 22:50:54,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-26 22:50:54,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:50:54,942 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:50:54,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:50:54,943 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:50:54,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:50:54,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1485763222, now seen corresponding path program 1 times [2020-10-26 22:50:54,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:50:54,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295942442] [2020-10-26 22:50:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:50:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:55,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:57,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:00,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:00,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-26 22:51:00,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:51:00,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-26 22:51:00,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:51:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 22:51:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-26 22:51:00,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:51:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:00,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:00,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:00,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:51:00,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:00,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:51:00,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:00,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:51:00,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:51:00,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:51:00,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:00,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:51:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:00,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:00,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:00,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:51:00,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:00,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-26 22:51:00,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:51:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:51:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:51:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:00,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:51:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:00,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:00,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:00,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:51:00,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:00,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 22:51:00,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:51:00,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:51:00,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:51:00,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:00,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-26 22:51:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:00,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:01,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:01,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 22:51:01,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:01,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 22:51:01,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:01,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:51:01,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:51:01,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 22:51:01,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 294 proven. 88 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 22:51:01,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295942442] [2020-10-26 22:51:01,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:51:01,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:51:01,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682539721] [2020-10-26 22:51:01,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:51:01,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:51:01,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:51:01,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:51:01,362 INFO L87 Difference]: Start difference. First operand 22362 states and 27634 transitions. Second operand 8 states. [2020-10-26 22:51:21,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:51:21,536 INFO L93 Difference]: Finished difference Result 54095 states and 70519 transitions. [2020-10-26 22:51:21,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:51:21,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 377 [2020-10-26 22:51:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:51:21,647 INFO L225 Difference]: With dead ends: 54095 [2020-10-26 22:51:21,647 INFO L226 Difference]: Without dead ends: 32506 [2020-10-26 22:51:21,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:51:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32506 states. [2020-10-26 22:51:22,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32506 to 32173. [2020-10-26 22:51:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32173 states. [2020-10-26 22:51:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32173 states to 32173 states and 41217 transitions. [2020-10-26 22:51:22,678 INFO L78 Accepts]: Start accepts. Automaton has 32173 states and 41217 transitions. Word has length 377 [2020-10-26 22:51:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:51:22,679 INFO L481 AbstractCegarLoop]: Abstraction has 32173 states and 41217 transitions. [2020-10-26 22:51:22,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:51:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 32173 states and 41217 transitions. [2020-10-26 22:51:22,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-10-26 22:51:22,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:51:22,690 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:51:22,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:51:22,691 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:51:22,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:51:22,692 INFO L82 PathProgramCache]: Analyzing trace with hash -768134642, now seen corresponding path program 1 times [2020-10-26 22:51:22,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:51:22,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780940561] [2020-10-26 22:51:22,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:51:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:22,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:23,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:27,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:27,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-26 22:51:27,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:51:27,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4720 [2020-10-26 22:51:27,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:27,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:51:27,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 22:51:27,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:51:27,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:27,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:51:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:27,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:27,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:51:27,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:51:27,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:51:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:51:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:51:27,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:51:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:27,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:27,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:51:27,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:27,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 22:51:27,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:51:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:51:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 22:51:27,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:27,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:51:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:27,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:28,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:28,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:51:28,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:28,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 22:51:28,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:51:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:51:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:51:28,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:28,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-26 22:51:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:28,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:28,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 22:51:28,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:28,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 22:51:28,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:51:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-26 22:51:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:51:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 204 proven. 88 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-26 22:51:28,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780940561] [2020-10-26 22:51:28,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:51:28,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:51:28,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57667779] [2020-10-26 22:51:28,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:51:28,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:51:28,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:51:28,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:51:28,377 INFO L87 Difference]: Start difference. First operand 32173 states and 41217 transitions. Second operand 7 states. [2020-10-26 22:51:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:51:46,932 INFO L93 Difference]: Finished difference Result 71490 states and 96556 transitions. [2020-10-26 22:51:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:51:46,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 381 [2020-10-26 22:51:46,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:51:47,075 INFO L225 Difference]: With dead ends: 71490 [2020-10-26 22:51:47,075 INFO L226 Difference]: Without dead ends: 40090 [2020-10-26 22:51:47,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:51:47,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40090 states. [2020-10-26 22:51:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40090 to 39688. [2020-10-26 22:51:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39688 states. [2020-10-26 22:51:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39688 states to 39688 states and 51151 transitions. [2020-10-26 22:51:48,193 INFO L78 Accepts]: Start accepts. Automaton has 39688 states and 51151 transitions. Word has length 381 [2020-10-26 22:51:48,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:51:48,193 INFO L481 AbstractCegarLoop]: Abstraction has 39688 states and 51151 transitions. [2020-10-26 22:51:48,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:51:48,194 INFO L276 IsEmpty]: Start isEmpty. Operand 39688 states and 51151 transitions. [2020-10-26 22:51:48,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-26 22:51:48,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:51:48,207 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:51:48,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:51:48,208 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:51:48,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:51:48,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1582628410, now seen corresponding path program 1 times [2020-10-26 22:51:48,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:51:48,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211338315] [2020-10-26 22:51:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:51:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:48,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:49,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:51,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:51,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-26 22:51:51,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:51:51,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2905 [2020-10-26 22:51:51,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 22:51:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 22:51:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 259 [2020-10-26 22:51:51,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:51,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:51:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:51,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:51,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:51,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:51:51,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:51,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:51:51,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:51:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:51:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:51:51,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:51,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:51:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:51,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:51,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:51,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:51:51,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:51,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 22:51:51,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:51:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:51:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 22:51:51,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:51,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:51:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:51,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:52,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:52,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 22:51:52,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:52,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-26 22:51:52,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:51:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:51:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 22:51:52,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:52,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-26 22:51:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:52,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:52,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:52,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 22:51:52,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-26 22:51:52,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:51:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:51:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 22:51:52,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 257 proven. 161 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 22:51:52,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211338315] [2020-10-26 22:51:52,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:51:52,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 22:51:52,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097579249] [2020-10-26 22:51:52,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:51:52,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:51:52,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:51:52,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:51:52,595 INFO L87 Difference]: Start difference. First operand 39688 states and 51151 transitions. Second operand 9 states. [2020-10-26 22:51:55,680 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-26 22:52:14,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:52:14,330 INFO L93 Difference]: Finished difference Result 92421 states and 123354 transitions. [2020-10-26 22:52:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:52:14,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 409 [2020-10-26 22:52:14,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:52:14,675 INFO L225 Difference]: With dead ends: 92421 [2020-10-26 22:52:14,675 INFO L226 Difference]: Without dead ends: 53313 [2020-10-26 22:52:14,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:52:14,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53313 states. [2020-10-26 22:52:15,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53313 to 53053. [2020-10-26 22:52:15,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53053 states. [2020-10-26 22:52:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53053 states to 53053 states and 71247 transitions. [2020-10-26 22:52:15,926 INFO L78 Accepts]: Start accepts. Automaton has 53053 states and 71247 transitions. Word has length 409 [2020-10-26 22:52:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:52:15,927 INFO L481 AbstractCegarLoop]: Abstraction has 53053 states and 71247 transitions. [2020-10-26 22:52:15,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:52:15,927 INFO L276 IsEmpty]: Start isEmpty. Operand 53053 states and 71247 transitions. [2020-10-26 22:52:15,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-26 22:52:15,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:52:15,953 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:52:15,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:52:15,954 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:52:15,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:52:15,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1374177086, now seen corresponding path program 1 times [2020-10-26 22:52:15,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:52:15,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229242104] [2020-10-26 22:52:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:52:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:16,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:16,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:17,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:19,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:21,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:21,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-26 22:52:21,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:52:21,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-26 22:52:21,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 22:52:21,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:52:21,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 377 [2020-10-26 22:52:21,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:21,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:52:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:21,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:21,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:21,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:52:21,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:21,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:52:21,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:52:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:52:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:52:21,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:21,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:52:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:21,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:22,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:22,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:52:22,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:52:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-26 22:52:22,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-26 22:52:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:22,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:52:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:22,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:22,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 22:52:22,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:52:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 22:52:22,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 22:52:22,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:22,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-26 22:52:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:22,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:22,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:22,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 22:52:22,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 22:52:22,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-26 22:52:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 212 proven. 114 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-26 22:52:22,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229242104] [2020-10-26 22:52:22,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:52:22,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:52:22,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175457392] [2020-10-26 22:52:22,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:52:22,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:52:22,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:52:22,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:52:22,915 INFO L87 Difference]: Start difference. First operand 53053 states and 71247 transitions. Second operand 9 states.