/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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:51:45,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:51:45,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:51:45,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:51:45,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:51:45,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:51:45,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:51:45,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:51:45,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:51:45,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:51:45,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:51:45,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:51:45,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:51:45,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:51:45,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:51:45,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:51:45,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:51:45,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:51:45,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:51:45,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:51:45,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:51:45,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:51:45,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:51:45,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:51:45,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:51:45,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:51:45,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:51:45,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:51:45,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:51:45,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:51:45,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:51:45,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:51:45,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:51:45,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:51:45,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:51:45,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:51:45,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:51:45,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:51:45,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:51:45,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:51:45,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:51:45,575 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 22:51:45,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:51:45,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:51:45,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:51:45,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:51:45,638 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:51:45,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:51:45,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:51:45,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:51:45,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:51:45,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:51:45,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:51:45,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:51:45,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:51:45,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:51:45,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:51:45,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:51:45,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:51:45,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:51:45,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:51:45,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:51:45,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:51:45,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:51:45,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:51:45,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:51:45,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:51:45,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:51:45,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:51:45,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:51:45,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:51:45,652 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:51:46,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:51:46,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:51:46,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:51:46,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:51:46,107 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:51:46,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label21.c [2020-10-26 22:51:46,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b2315aaa/45a61a8401bc4b08928ba57371bbf3a8/FLAGac3cb02a9 [2020-10-26 22:51:47,205 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:51:47,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label21.c [2020-10-26 22:51:47,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b2315aaa/45a61a8401bc4b08928ba57371bbf3a8/FLAGac3cb02a9 [2020-10-26 22:51:47,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b2315aaa/45a61a8401bc4b08928ba57371bbf3a8 [2020-10-26 22:51:47,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:51:47,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:51:47,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:51:47,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:51:47,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:51:47,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:51:47" (1/1) ... [2020-10-26 22:51:47,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344291fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:47, skipping insertion in model container [2020-10-26 22:51:47,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:51:47" (1/1) ... [2020-10-26 22:51:47,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:51:47,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:51:49,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:51:49,144 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:51:49,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:51:49,907 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:51:49,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:49 WrapperNode [2020-10-26 22:51:49,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:51:49,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:51:49,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:51:49,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:51:49,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:49" (1/1) ... [2020-10-26 22:51:49,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:49" (1/1) ... [2020-10-26 22:51:50,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:49" (1/1) ... [2020-10-26 22:51:50,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:49" (1/1) ... [2020-10-26 22:51:50,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:49" (1/1) ... [2020-10-26 22:51:50,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:49" (1/1) ... [2020-10-26 22:51:50,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:49" (1/1) ... [2020-10-26 22:51:50,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:51:50,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:51:50,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:51:50,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:51:50,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:49" (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 22:51:50,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:51:50,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:51:50,339 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:51:50,339 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:51:50,339 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 22:51:50,340 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 22:51:50,340 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 22:51:50,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:51:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:51:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 22:51:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 22:51:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 22:51:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:51:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:51:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:51:50,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:51:50,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:51:50,344 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:51:50,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:51:50,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:51:50,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:51:50,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:51:50,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:51:50,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:51:50,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:51:55,844 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:51:55,848 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:51:55,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:51:55 BoogieIcfgContainer [2020-10-26 22:51:55,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:51:55,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:51:55,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:51:55,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:51:55,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:51:47" (1/3) ... [2020-10-26 22:51:55,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8de25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:51:55, skipping insertion in model container [2020-10-26 22:51:55,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:49" (2/3) ... [2020-10-26 22:51:55,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8de25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:51:55, skipping insertion in model container [2020-10-26 22:51:55,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:51:55" (3/3) ... [2020-10-26 22:51:55,861 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label21.c [2020-10-26 22:51:55,874 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:51:55,891 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:51:55,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:51:55,944 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:51:55,944 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:51:55,945 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:51:55,945 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:51:55,945 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:51:55,945 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:51:55,945 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:51:55,945 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:51:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-26 22:51:55,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-26 22:51:55,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:51:55,996 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] [2020-10-26 22:51:55,997 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:51:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:51:56,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1569486748, now seen corresponding path program 1 times [2020-10-26 22:51:56,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:51:56,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289019659] [2020-10-26 22:51:56,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:51:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:56,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:56,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:56,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-26 22:51:56,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-26 22:51:56,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:51:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:51:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 22:51:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:51:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:51:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:56,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:56,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:56,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:51:56,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:56,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 22:51:56,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:51:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:51:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:51:56,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:56,926 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 22:51:56,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289019659] [2020-10-26 22:51:56,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:51:56,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:51:56,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699718175] [2020-10-26 22:51:56,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:51:56,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:51:56,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:51:56,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:51:56,969 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-26 22:52:08,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:52:08,377 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-26 22:52:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:52:08,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-26 22:52:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:52:08,421 INFO L225 Difference]: With dead ends: 2476 [2020-10-26 22:52:08,421 INFO L226 Difference]: Without dead ends: 1569 [2020-10-26 22:52:08,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:52:08,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-26 22:52:08,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-26 22:52:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-26 22:52:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-26 22:52:08,630 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 29 [2020-10-26 22:52:08,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:52:08,632 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-26 22:52:08,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:52:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-26 22:52:08,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-26 22:52:08,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:52:08,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:08,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:52:08,644 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:52:08,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:52:08,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1354067749, now seen corresponding path program 1 times [2020-10-26 22:52:08,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:52:08,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221299297] [2020-10-26 22:52:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:52:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:08,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:08,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:09,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:09,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 22:52:09,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:52:09,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1075 [2020-10-26 22:52:09,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:52:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:52:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 22:52:09,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:52:09,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:52:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:09,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:09,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:09,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:52:09,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 22:52:09,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:09,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:52:09,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:52:09,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:52:09,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:52:10,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:52:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:10,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:10,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:52:10,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:10,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 22:52:10,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:52:10,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:52:10,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221299297] [2020-10-26 22:52:10,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:52:10,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:52:10,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082500458] [2020-10-26 22:52:10,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:52:10,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:52:10,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:52:10,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:52:10,491 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 6 states. [2020-10-26 22:52:22,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:52:22,445 INFO L93 Difference]: Finished difference Result 4692 states and 7653 transitions. [2020-10-26 22:52:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 22:52:22,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-26 22:52:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:52:22,465 INFO L225 Difference]: With dead ends: 4692 [2020-10-26 22:52:22,465 INFO L226 Difference]: Without dead ends: 3144 [2020-10-26 22:52:22,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:52:22,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2020-10-26 22:52:22,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 3126. [2020-10-26 22:52:22,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3126 states. [2020-10-26 22:52:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4444 transitions. [2020-10-26 22:52:22,573 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4444 transitions. Word has length 104 [2020-10-26 22:52:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:52:22,574 INFO L481 AbstractCegarLoop]: Abstraction has 3126 states and 4444 transitions. [2020-10-26 22:52:22,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:52:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4444 transitions. [2020-10-26 22:52:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-26 22:52:22,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:52:22,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:22,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:52:22,615 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:52:22,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:52:22,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1839809325, now seen corresponding path program 1 times [2020-10-26 22:52:22,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:52:22,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266332611] [2020-10-26 22:52:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:52:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:23,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:23,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:23,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:23,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 22:52:23,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:52:23,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1298 [2020-10-26 22:52:23,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:52:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:52:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:52:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:52:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:24,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:24,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:52:24,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:24,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:52:24,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:52:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:52:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:52:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:52:24,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:52:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:24,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:24,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:24,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:24,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 22:52:24,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:52:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-26 22:52:24,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 22:52:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:52:24,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266332611] [2020-10-26 22:52:24,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:52:24,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:52:24,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793584796] [2020-10-26 22:52:24,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:52:24,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:52:24,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:52:24,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:52:24,610 INFO L87 Difference]: Start difference. First operand 3126 states and 4444 transitions. Second operand 7 states. [2020-10-26 22:52:46,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:52:46,149 INFO L93 Difference]: Finished difference Result 12619 states and 18511 transitions. [2020-10-26 22:52:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:52:46,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-26 22:52:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:52:46,209 INFO L225 Difference]: With dead ends: 12619 [2020-10-26 22:52:46,209 INFO L226 Difference]: Without dead ends: 9499 [2020-10-26 22:52:46,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:52:46,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9499 states. [2020-10-26 22:52:46,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9499 to 9460. [2020-10-26 22:52:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9460 states. [2020-10-26 22:52:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9460 states to 9460 states and 12697 transitions. [2020-10-26 22:52:46,568 INFO L78 Accepts]: Start accepts. Automaton has 9460 states and 12697 transitions. Word has length 108 [2020-10-26 22:52:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:52:46,571 INFO L481 AbstractCegarLoop]: Abstraction has 9460 states and 12697 transitions. [2020-10-26 22:52:46,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:52:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 9460 states and 12697 transitions. [2020-10-26 22:52:46,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-26 22:52:46,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:52:46,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:46,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:52:46,587 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:52:46,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:52:46,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1606244665, now seen corresponding path program 1 times [2020-10-26 22:52:46,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:52:46,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451269824] [2020-10-26 22:52:46,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:52:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:46,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:46,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:47,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:47,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 22:52:47,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:52:47,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-26 22:52:47,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:52:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:52:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 22:52:47,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:47,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:52:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:47,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:47,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:47,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:52:47,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:47,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:52:47,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:52:47,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:52:47,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:52:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:47,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:52:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:47,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:47,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 22:52:47,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-26 22:52:47,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:47,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 22:52:47,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:52:47,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451269824] [2020-10-26 22:52:47,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:52:47,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:52:47,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975713820] [2020-10-26 22:52:47,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:52:47,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:52:47,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:52:47,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:52:47,939 INFO L87 Difference]: Start difference. First operand 9460 states and 12697 transitions. Second operand 7 states. [2020-10-26 22:53:05,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:53:05,119 INFO L93 Difference]: Finished difference Result 27915 states and 38487 transitions. [2020-10-26 22:53:05,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:53:05,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-26 22:53:05,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:53:05,215 INFO L225 Difference]: With dead ends: 27915 [2020-10-26 22:53:05,216 INFO L226 Difference]: Without dead ends: 18461 [2020-10-26 22:53:05,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:53:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18461 states. [2020-10-26 22:53:05,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18461 to 16749. [2020-10-26 22:53:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16749 states. [2020-10-26 22:53:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16749 states to 16749 states and 21966 transitions. [2020-10-26 22:53:05,724 INFO L78 Accepts]: Start accepts. Automaton has 16749 states and 21966 transitions. Word has length 114 [2020-10-26 22:53:05,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:53:05,725 INFO L481 AbstractCegarLoop]: Abstraction has 16749 states and 21966 transitions. [2020-10-26 22:53:05,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:53:05,725 INFO L276 IsEmpty]: Start isEmpty. Operand 16749 states and 21966 transitions. [2020-10-26 22:53:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-26 22:53:05,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:53:05,729 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:53:05,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:53:05,730 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:53:05,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:53:05,730 INFO L82 PathProgramCache]: Analyzing trace with hash 507700110, now seen corresponding path program 1 times [2020-10-26 22:53:05,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:53:05,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774897153] [2020-10-26 22:53:05,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:53:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:06,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:07,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:07,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-26 22:53:07,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:53:07,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1436 [2020-10-26 22:53:07,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:07,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:53:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-26 22:53:07,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:07,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:53:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:07,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:07,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:07,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:53:07,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:07,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:53:07,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:07,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:53:07,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:07,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:53:07,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:07,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:53:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:07,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:07,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:53:07,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:07,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 22:53:07,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:53:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:53:07,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:07,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 22:53:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:07,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:08,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:08,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 22:53:08,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:53:08,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-26 22:53:08,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:08,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:08,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:53:08,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 22:53:08,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:53:08,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774897153] [2020-10-26 22:53:08,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:53:08,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:53:08,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823932024] [2020-10-26 22:53:08,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:53:08,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:53:08,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:53:08,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:53:08,154 INFO L87 Difference]: Start difference. First operand 16749 states and 21966 transitions. Second operand 7 states. [2020-10-26 22:53:20,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:53:20,400 INFO L93 Difference]: Finished difference Result 26177 states and 35653 transitions. [2020-10-26 22:53:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:53:20,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-26 22:53:20,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:53:20,447 INFO L225 Difference]: With dead ends: 26177 [2020-10-26 22:53:20,447 INFO L226 Difference]: Without dead ends: 9978 [2020-10-26 22:53:20,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:53:20,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9978 states. [2020-10-26 22:53:20,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9978 to 9610. [2020-10-26 22:53:20,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9610 states. [2020-10-26 22:53:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 12556 transitions. [2020-10-26 22:53:20,752 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 12556 transitions. Word has length 204 [2020-10-26 22:53:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:53:20,753 INFO L481 AbstractCegarLoop]: Abstraction has 9610 states and 12556 transitions. [2020-10-26 22:53:20,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:53:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 12556 transitions. [2020-10-26 22:53:20,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-26 22:53:20,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:53:20,757 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:53:20,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:53:20,758 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:53:20,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:53:20,759 INFO L82 PathProgramCache]: Analyzing trace with hash -170790408, now seen corresponding path program 1 times [2020-10-26 22:53:20,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:53:20,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134342667] [2020-10-26 22:53:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:53:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:20,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:23,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:23,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-26 22:53:23,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:53:23,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3113 [2020-10-26 22:53:23,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:23,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:53:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:53:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 22:53:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:24,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:53:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:24,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:24,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:24,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:53:24,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:24,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:53:24,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:53:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:53:24,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:24,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:53:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:24,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:24,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:24,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 22:53:24,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:24,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-26 22:53:24,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:53:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 22:53:24,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:24,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-26 22:53:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:24,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:24,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:24,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:53:24,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 22:53:24,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:53:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 22:53:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:53:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 42 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:53:25,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134342667] [2020-10-26 22:53:25,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:53:25,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:53:25,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540001545] [2020-10-26 22:53:25,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:53:25,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:53:25,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:53:25,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:53:25,030 INFO L87 Difference]: Start difference. First operand 9610 states and 12556 transitions. Second operand 7 states. [2020-10-26 22:53:39,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:53:39,010 INFO L93 Difference]: Finished difference Result 18716 states and 24849 transitions. [2020-10-26 22:53:39,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:53:39,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-26 22:53:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:53:39,044 INFO L225 Difference]: With dead ends: 18716 [2020-10-26 22:53:39,044 INFO L226 Difference]: Without dead ends: 9879 [2020-10-26 22:53:39,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:53:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9879 states. [2020-10-26 22:53:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9879 to 8877. [2020-10-26 22:53:39,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8877 states. [2020-10-26 22:53:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 11635 transitions. [2020-10-26 22:53:39,336 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 11635 transitions. Word has length 250 [2020-10-26 22:53:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:53:39,337 INFO L481 AbstractCegarLoop]: Abstraction has 8877 states and 11635 transitions. [2020-10-26 22:53:39,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:53:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 11635 transitions. [2020-10-26 22:53:39,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-26 22:53:39,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:53:39,345 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:53:39,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:53:39,345 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:53:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:53:39,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1008155919, now seen corresponding path program 1 times [2020-10-26 22:53:39,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:53:39,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350317930] [2020-10-26 22:53:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:53:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:40,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:43,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:43,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-26 22:53:43,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:53:43,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4121 [2020-10-26 22:53:43,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:53:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 22:53:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 22:53:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:53:43,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:53:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:43,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:43,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:53:43,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:43,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:53:43,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:43,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:53:43,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:43,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:53:43,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:53:43,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:53:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:43,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:44,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:44,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:53:44,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-26 22:53:44,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:53:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:53:44,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:44,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:53:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:44,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:44,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:44,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:44,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:53:44,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:53:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-26 22:53:44,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:53:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:53:44,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-26 22:53:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:44,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:44,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:44,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:53:44,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:44,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 22:53:44,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:44,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:53:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:53:44,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 219 proven. 72 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 22:53:45,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350317930] [2020-10-26 22:53:45,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:53:45,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:53:45,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534022317] [2020-10-26 22:53:45,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:53:45,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:53:45,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:53:45,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:53:45,321 INFO L87 Difference]: Start difference. First operand 8877 states and 11635 transitions. Second operand 8 states. [2020-10-26 22:53:49,396 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-26 22:54:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:54:06,433 INFO L93 Difference]: Finished difference Result 24724 states and 34159 transitions. [2020-10-26 22:54:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:54:06,435 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 336 [2020-10-26 22:54:06,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:54:06,489 INFO L225 Difference]: With dead ends: 24724 [2020-10-26 22:54:06,490 INFO L226 Difference]: Without dead ends: 16620 [2020-10-26 22:54:06,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:54:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16620 states. [2020-10-26 22:54:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16620 to 16285. [2020-10-26 22:54:06,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16285 states. [2020-10-26 22:54:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16285 states to 16285 states and 20682 transitions. [2020-10-26 22:54:06,907 INFO L78 Accepts]: Start accepts. Automaton has 16285 states and 20682 transitions. Word has length 336 [2020-10-26 22:54:06,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:54:06,907 INFO L481 AbstractCegarLoop]: Abstraction has 16285 states and 20682 transitions. [2020-10-26 22:54:06,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:54:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 16285 states and 20682 transitions. [2020-10-26 22:54:06,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-26 22:54:06,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:54:06,915 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:54:06,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:54:06,916 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:54:06,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:54:06,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1788802297, now seen corresponding path program 1 times [2020-10-26 22:54:06,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:54:06,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918431936] [2020-10-26 22:54:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:54:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:07,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:08,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:11,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:11,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-26 22:54:11,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:54:11,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4245 [2020-10-26 22:54:11,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:54:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 22:54:11,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:54:11,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:54:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:11,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:11,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:11,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:54:11,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:11,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:54:11,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:54:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:54:11,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:54:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:11,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:11,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:11,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:54:11,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:11,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 22:54:11,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:11,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:54:11,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:11,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 22:54:11,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:11,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:54:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:11,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:11,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:11,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:54:11,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 22:54:11,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:54:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:54:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:54:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-26 22:54:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:12,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:12,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:54:12,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 22:54:12,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:54:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 22:54:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:54:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:54:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 153 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-26 22:54:12,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918431936] [2020-10-26 22:54:12,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:54:12,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:54:12,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068463584] [2020-10-26 22:54:12,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:54:12,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:54:12,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:54:12,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:54:12,259 INFO L87 Difference]: Start difference. First operand 16285 states and 20682 transitions. Second operand 7 states. [2020-10-26 22:54:30,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:54:30,246 INFO L93 Difference]: Finished difference Result 39658 states and 54154 transitions. [2020-10-26 22:54:30,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:54:30,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2020-10-26 22:54:30,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:54:30,336 INFO L225 Difference]: With dead ends: 39658 [2020-10-26 22:54:30,336 INFO L226 Difference]: Without dead ends: 24146 [2020-10-26 22:54:30,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:54:30,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24146 states. [2020-10-26 22:54:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24146 to 23700. [2020-10-26 22:54:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23700 states. [2020-10-26 22:54:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23700 states to 23700 states and 29982 transitions. [2020-10-26 22:54:30,963 INFO L78 Accepts]: Start accepts. Automaton has 23700 states and 29982 transitions. Word has length 340 [2020-10-26 22:54:30,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:54:30,964 INFO L481 AbstractCegarLoop]: Abstraction has 23700 states and 29982 transitions. [2020-10-26 22:54:30,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:54:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 23700 states and 29982 transitions. [2020-10-26 22:54:30,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-26 22:54:30,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:54:30,973 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:54:30,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:54:30,974 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:54:30,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:54:30,975 INFO L82 PathProgramCache]: Analyzing trace with hash 80677049, now seen corresponding path program 1 times [2020-10-26 22:54:30,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:54:30,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23427787] [2020-10-26 22:54:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:54:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:31,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:31,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:35,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:35,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-26 22:54:35,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:54:35,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4472 [2020-10-26 22:54:35,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 22:54:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 22:54:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-26 22:54:35,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:35,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:54:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:35,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:35,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:35,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:54:35,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:54:35,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:54:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:54:35,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:35,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:54:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:35,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:35,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:35,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:54:35,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:35,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 22:54:35,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:54:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 22:54:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:36,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:54:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:36,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:36,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:36,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:54:36,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:36,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-26 22:54:36,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:36,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:54:36,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:54:36,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-26 22:54:36,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:36,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-26 22:54:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:36,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:36,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:36,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:54:36,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 22:54:36,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:54:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:54:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:54:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 321 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:54:36,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23427787] [2020-10-26 22:54:36,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:54:36,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 22:54:36,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424885600] [2020-10-26 22:54:36,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 22:54:36,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:54:36,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 22:54:36,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:54:36,756 INFO L87 Difference]: Start difference. First operand 23700 states and 29982 transitions. Second operand 11 states. [2020-10-26 22:54:41,582 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 22:54:47,434 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 22:55:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:55:17,799 INFO L93 Difference]: Finished difference Result 80734 states and 108481 transitions. [2020-10-26 22:55:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-26 22:55:17,801 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 372 [2020-10-26 22:55:17,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:55:18,015 INFO L225 Difference]: With dead ends: 80734 [2020-10-26 22:55:18,015 INFO L226 Difference]: Without dead ends: 57807 [2020-10-26 22:55:18,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2020-10-26 22:55:18,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57807 states. [2020-10-26 22:55:19,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57807 to 56711. [2020-10-26 22:55:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56711 states. [2020-10-26 22:55:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56711 states to 56711 states and 75143 transitions. [2020-10-26 22:55:19,433 INFO L78 Accepts]: Start accepts. Automaton has 56711 states and 75143 transitions. Word has length 372 [2020-10-26 22:55:19,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:55:19,434 INFO L481 AbstractCegarLoop]: Abstraction has 56711 states and 75143 transitions. [2020-10-26 22:55:19,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 22:55:19,434 INFO L276 IsEmpty]: Start isEmpty. Operand 56711 states and 75143 transitions. [2020-10-26 22:55:19,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-26 22:55:19,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:55:19,445 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:55:19,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:55:19,445 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:55:19,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:55:19,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1599869221, now seen corresponding path program 1 times [2020-10-26 22:55:19,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:55:19,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538846575] [2020-10-26 22:55:19,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:55:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:19,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:20,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:21,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:21,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-26 22:55:21,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:55:21,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1889 [2020-10-26 22:55:21,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:55:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-26 22:55:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:55:21,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:21,977 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 22:55:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:55:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:21,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:21,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:21,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:55:21,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:55:21,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:55:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:55:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:55:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:22,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:55:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:22,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:22,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:22,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:55:22,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:22,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 22:55:22,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:55:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:55:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:55:22,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:55:22,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:55:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:22,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:22,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:22,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 22:55:22,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:22,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 22:55:22,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:55:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:55:22,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-26 22:55:22,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:55:22,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-26 22:55:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:22,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:22,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:22,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:55:22,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 22:55:22,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:55:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:55:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:55:22,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-10-26 22:55:22,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538846575] [2020-10-26 22:55:22,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:55:22,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:55:22,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9368106] [2020-10-26 22:55:22,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:55:22,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:55:22,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:55:22,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:55:22,704 INFO L87 Difference]: Start difference. First operand 56711 states and 75143 transitions. Second operand 7 states.