/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:27:33,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:27:33,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:27:33,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:27:33,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:27:33,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:27:33,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:27:33,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:27:33,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:27:33,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:27:33,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:27:33,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:27:33,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:27:33,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:27:33,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:27:33,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:27:33,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:27:33,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:27:33,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:27:33,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:27:33,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:27:33,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:27:33,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:27:33,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:27:33,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:27:33,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:27:33,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:27:33,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:27:33,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:27:33,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:27:33,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:27:33,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:27:33,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:27:33,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:27:33,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:27:33,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:27:33,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:27:33,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:27:33,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:27:33,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:27:33,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:27:33,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:27:33,944 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:27:33,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:27:33,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:27:33,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:27:33,947 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:27:33,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:27:33,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:27:33,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:27:33,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:27:33,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:27:33,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:27:33,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:27:33,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:27:33,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:27:33,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:27:33,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:27:33,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:27:33,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:27:33,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:27:33,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:27:33,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:27:33,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:27:33,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:27:33,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:27:33,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:27:33,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:27:33,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:27:33,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:27:33,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:27:33,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:27:34,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:27:34,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:27:34,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:27:34,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:27:34,481 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:27:34,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label04.c [2020-10-29 08:27:34,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1626e477e/bbe49d94ced2476f8c0e47c66ba2fbdd/FLAGc2b133c42 [2020-10-29 08:27:35,520 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:27:35,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label04.c [2020-10-29 08:27:35,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1626e477e/bbe49d94ced2476f8c0e47c66ba2fbdd/FLAGc2b133c42 [2020-10-29 08:27:36,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1626e477e/bbe49d94ced2476f8c0e47c66ba2fbdd [2020-10-29 08:27:36,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:27:36,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:27:36,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:27:36,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:27:36,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:27:36,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:27:36" (1/1) ... [2020-10-29 08:27:36,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d774bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:36, skipping insertion in model container [2020-10-29 08:27:36,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:27:36" (1/1) ... [2020-10-29 08:27:36,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:27:36,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:27:37,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:27:37,424 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:27:38,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:27:38,045 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:27:38,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:38 WrapperNode [2020-10-29 08:27:38,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:27:38,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:27:38,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:27:38,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:27:38,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:38" (1/1) ... [2020-10-29 08:27:38,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:38" (1/1) ... [2020-10-29 08:27:38,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:38" (1/1) ... [2020-10-29 08:27:38,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:38" (1/1) ... [2020-10-29 08:27:38,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:38" (1/1) ... [2020-10-29 08:27:38,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:38" (1/1) ... [2020-10-29 08:27:38,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:38" (1/1) ... [2020-10-29 08:27:38,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:27:38,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:27:38,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:27:38,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:27:38,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:27:38,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:27:38,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:27:38,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:27:38,442 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:27:38,442 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:27:38,442 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:27:38,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:27:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:27:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:27:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:27:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:27:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:27:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:27:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:27:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:27:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:27:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:27:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:27:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:27:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:27:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:27:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:27:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:27:42,698 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:27:42,699 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:27:42,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:27:42 BoogieIcfgContainer [2020-10-29 08:27:42,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:27:42,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:27:42,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:27:42,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:27:42,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:27:36" (1/3) ... [2020-10-29 08:27:42,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469cd2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:27:42, skipping insertion in model container [2020-10-29 08:27:42,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:38" (2/3) ... [2020-10-29 08:27:42,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469cd2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:27:42, skipping insertion in model container [2020-10-29 08:27:42,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:27:42" (3/3) ... [2020-10-29 08:27:42,716 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label04.c [2020-10-29 08:27:42,729 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:27:42,736 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:27:42,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:27:42,786 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:27:42,786 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:27:42,786 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:27:42,786 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:27:42,786 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:27:42,787 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:27:42,787 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:27:42,787 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:27:42,823 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:27:42,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 08:27:42,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:27:42,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:27:42,835 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:27:42,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:27:42,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1482274536, now seen corresponding path program 1 times [2020-10-29 08:27:42,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:27:42,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616653328] [2020-10-29 08:27:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:27:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:43,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:43,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:43,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 08:27:43,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:43,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-10-29 08:27:43,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:43,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:27:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:27:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 08:27:43,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 08:27:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:27:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:44,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:44,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:44,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:27:44,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:44,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 08:27:44,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:44,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:44,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:27:44,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:27:44,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:27:44,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:27:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:27:44,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616653328] [2020-10-29 08:27:44,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:27:44,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:27:44,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124917454] [2020-10-29 08:27:44,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:27:44,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:27:44,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:27:44,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:27:44,218 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-29 08:27:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:27:59,742 INFO L93 Difference]: Finished difference Result 3021 states and 5797 transitions. [2020-10-29 08:27:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:27:59,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-29 08:27:59,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:27:59,780 INFO L225 Difference]: With dead ends: 3021 [2020-10-29 08:27:59,781 INFO L226 Difference]: Without dead ends: 2143 [2020-10-29 08:27:59,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:27:59,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-29 08:27:59,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2131. [2020-10-29 08:27:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2131 states. [2020-10-29 08:28:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 3175 transitions. [2020-10-29 08:28:00,005 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 3175 transitions. Word has length 59 [2020-10-29 08:28:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:28:00,006 INFO L481 AbstractCegarLoop]: Abstraction has 2131 states and 3175 transitions. [2020-10-29 08:28:00,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:28:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 3175 transitions. [2020-10-29 08:28:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 08:28:00,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:28:00,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:28:00,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:28:00,014 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:28:00,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:28:00,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1014652119, now seen corresponding path program 1 times [2020-10-29 08:28:00,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:28:00,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449794356] [2020-10-29 08:28:00,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:28:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:00,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:00,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:01,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:01,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 08:28:01,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:28:01,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1161 [2020-10-29 08:28:01,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:01,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:01,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:28:01,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 08:28:01,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 08:28:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:01,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:28:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:01,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:01,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:01,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:28:01,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:01,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:28:01,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:01,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:28:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:28:01,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 08:28:01,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:28:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:01,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:01,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:28:01,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:01,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 08:28:01,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:01,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 08:28:01,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:28:01,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449794356] [2020-10-29 08:28:01,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:28:01,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:28:01,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001689180] [2020-10-29 08:28:01,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:28:01,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:28:01,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:28:01,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:28:01,672 INFO L87 Difference]: Start difference. First operand 2131 states and 3175 transitions. Second operand 5 states. [2020-10-29 08:28:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:28:13,903 INFO L93 Difference]: Finished difference Result 6398 states and 9600 transitions. [2020-10-29 08:28:13,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:28:13,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-29 08:28:13,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:28:13,938 INFO L225 Difference]: With dead ends: 6398 [2020-10-29 08:28:13,938 INFO L226 Difference]: Without dead ends: 4273 [2020-10-29 08:28:13,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:28:13,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2020-10-29 08:28:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 4269. [2020-10-29 08:28:14,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4269 states. [2020-10-29 08:28:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4269 states to 4269 states and 5643 transitions. [2020-10-29 08:28:14,091 INFO L78 Accepts]: Start accepts. Automaton has 4269 states and 5643 transitions. Word has length 128 [2020-10-29 08:28:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:28:14,092 INFO L481 AbstractCegarLoop]: Abstraction has 4269 states and 5643 transitions. [2020-10-29 08:28:14,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:28:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4269 states and 5643 transitions. [2020-10-29 08:28:14,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-29 08:28:14,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:28:14,100 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:28:14,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:28:14,100 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:28:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:28:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1061930691, now seen corresponding path program 1 times [2020-10-29 08:28:14,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:28:14,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236822707] [2020-10-29 08:28:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:28:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:14,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:15,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:15,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 08:28:15,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:28:15,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1435 [2020-10-29 08:28:15,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:15,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:28:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:28:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:28:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:15,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:28:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:15,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:15,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:15,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:28:15,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:15,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:28:15,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:15,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:15,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:15,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:15,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:28:15,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:15,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:28:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:15,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:16,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:16,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 08:28:16,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:16,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-29 08:28:16,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:16,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:28:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:28:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 08:28:16,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:28:16,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236822707] [2020-10-29 08:28:16,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:28:16,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:28:16,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163649842] [2020-10-29 08:28:16,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:28:16,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:28:16,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:28:16,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:28:16,410 INFO L87 Difference]: Start difference. First operand 4269 states and 5643 transitions. Second operand 7 states. [2020-10-29 08:28:31,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:28:31,495 INFO L93 Difference]: Finished difference Result 11512 states and 15578 transitions. [2020-10-29 08:28:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:28:31,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-29 08:28:31,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:28:31,541 INFO L225 Difference]: With dead ends: 11512 [2020-10-29 08:28:31,542 INFO L226 Difference]: Without dead ends: 7249 [2020-10-29 08:28:31,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:28:31,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7249 states. [2020-10-29 08:28:31,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7249 to 7182. [2020-10-29 08:28:31,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7182 states. [2020-10-29 08:28:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 8660 transitions. [2020-10-29 08:28:31,797 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 8660 transitions. Word has length 191 [2020-10-29 08:28:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:28:31,798 INFO L481 AbstractCegarLoop]: Abstraction has 7182 states and 8660 transitions. [2020-10-29 08:28:31,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:28:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 8660 transitions. [2020-10-29 08:28:31,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-29 08:28:31,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:28:31,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:28:31,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:28:31,805 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:28:31,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:28:31,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1018197904, now seen corresponding path program 1 times [2020-10-29 08:28:31,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:28:31,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202369389] [2020-10-29 08:28:31,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:28:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:32,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:32,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:35,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:35,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-29 08:28:35,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:28:35,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3783 [2020-10-29 08:28:35,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:35,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:28:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:28:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:28:35,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:35,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:28:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:35,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:35,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:35,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:28:35,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:35,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:28:35,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:35,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:28:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:35,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:28:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:35,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:36,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:36,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:28:36,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 08:28:36,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:36,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:28:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:28:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:28:36,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:36,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:28:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:36,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:36,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:28:36,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:36,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 08:28:36,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:36,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:28:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 08:28:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:28:36,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 102 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:28:36,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202369389] [2020-10-29 08:28:36,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:28:36,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:28:36,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687855187] [2020-10-29 08:28:36,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:28:36,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:28:36,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:28:36,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:28:36,453 INFO L87 Difference]: Start difference. First operand 7182 states and 8660 transitions. Second operand 7 states. [2020-10-29 08:28:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:28:52,224 INFO L93 Difference]: Finished difference Result 16620 states and 20032 transitions. [2020-10-29 08:28:52,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:28:52,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-29 08:28:52,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:28:52,282 INFO L225 Difference]: With dead ends: 16620 [2020-10-29 08:28:52,283 INFO L226 Difference]: Without dead ends: 10864 [2020-10-29 08:28:52,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:28:52,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10864 states. [2020-10-29 08:28:52,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10864 to 10117. [2020-10-29 08:28:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10117 states. [2020-10-29 08:28:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10117 states to 10117 states and 11917 transitions. [2020-10-29 08:28:52,545 INFO L78 Accepts]: Start accepts. Automaton has 10117 states and 11917 transitions. Word has length 254 [2020-10-29 08:28:52,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:28:52,547 INFO L481 AbstractCegarLoop]: Abstraction has 10117 states and 11917 transitions. [2020-10-29 08:28:52,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:28:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 10117 states and 11917 transitions. [2020-10-29 08:28:52,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-29 08:28:52,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:28:52,559 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:28:52,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:28:52,560 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:28:52,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:28:52,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1818226863, now seen corresponding path program 1 times [2020-10-29 08:28:52,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:28:52,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685753109] [2020-10-29 08:28:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:28:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:52,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:52,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:54,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:57,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:57,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-29 08:28:57,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:28:57,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 08:28:57,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:57,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:57,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:28:57,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-29 08:28:57,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 08:28:57,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:57,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:28:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:57,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:57,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:57,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:28:57,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:57,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:28:57,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:57,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:57,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:28:57,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:57,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:28:57,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:57,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:28:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:57,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:58,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:58,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:28:58,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:58,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 08:28:58,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:58,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:58,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 08:28:58,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-29 08:28:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:58,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:58,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:58,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:28:58,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:58,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 08:28:58,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:58,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:28:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:28:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:28:58,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:58,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-29 08:28:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:58,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:58,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:58,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:28:58,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:58,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:28:58,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:58,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:28:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 08:28:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:28:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 276 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 08:28:59,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685753109] [2020-10-29 08:28:59,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:28:59,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:28:59,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157604592] [2020-10-29 08:28:59,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:28:59,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:28:59,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:28:59,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:28:59,151 INFO L87 Difference]: Start difference. First operand 10117 states and 11917 transitions. Second operand 7 states. [2020-10-29 08:29:00,261 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 08:29:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:29:16,903 INFO L93 Difference]: Finished difference Result 22100 states and 28023 transitions. [2020-10-29 08:29:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:29:16,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 440 [2020-10-29 08:29:16,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:29:17,033 INFO L225 Difference]: With dead ends: 22100 [2020-10-29 08:29:17,034 INFO L226 Difference]: Without dead ends: 11207 [2020-10-29 08:29:17,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:29:17,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11207 states. [2020-10-29 08:29:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11207 to 10968. [2020-10-29 08:29:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10968 states. [2020-10-29 08:29:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10968 states to 10968 states and 12228 transitions. [2020-10-29 08:29:17,443 INFO L78 Accepts]: Start accepts. Automaton has 10968 states and 12228 transitions. Word has length 440 [2020-10-29 08:29:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:29:17,444 INFO L481 AbstractCegarLoop]: Abstraction has 10968 states and 12228 transitions. [2020-10-29 08:29:17,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:29:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 10968 states and 12228 transitions. [2020-10-29 08:29:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-10-29 08:29:17,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:29:17,454 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:29:17,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:29:17,454 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:29:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:29:17,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1127012776, now seen corresponding path program 1 times [2020-10-29 08:29:17,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:29:17,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342270861] [2020-10-29 08:29:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:29:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:17,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:17,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:22,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:22,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-29 08:29:22,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:29:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 08:29:22,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:22,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:22,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:29:22,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:29:22,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-29 08:29:22,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:22,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:29:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:22,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:22,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:22,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:29:22,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:29:22,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:22,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:29:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:29:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:22,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:23,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:23,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:29:23,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-29 08:29:23,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:23,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:29:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:29:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 08:29:23,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:23,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:29:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:23,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:23,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:29:23,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:23,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 08:29:23,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:23,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:23,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:29:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:29:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 08:29:23,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-29 08:29:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:24,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:24,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:29:24,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:24,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:29:24,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:24,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 08:29:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 102 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:29:24,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342270861] [2020-10-29 08:29:24,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:29:24,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:29:24,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165327046] [2020-10-29 08:29:24,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:29:24,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:29:24,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:29:24,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:29:24,288 INFO L87 Difference]: Start difference. First operand 10968 states and 12228 transitions. Second operand 7 states. [2020-10-29 08:29:38,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:29:38,811 INFO L93 Difference]: Finished difference Result 27230 states and 31289 transitions. [2020-10-29 08:29:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:29:38,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 456 [2020-10-29 08:29:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:29:38,858 INFO L225 Difference]: With dead ends: 27230 [2020-10-29 08:29:38,858 INFO L226 Difference]: Without dead ends: 16970 [2020-10-29 08:29:38,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:29:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16970 states. [2020-10-29 08:29:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16970 to 16823. [2020-10-29 08:29:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16823 states. [2020-10-29 08:29:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16823 states to 16823 states and 18757 transitions. [2020-10-29 08:29:39,228 INFO L78 Accepts]: Start accepts. Automaton has 16823 states and 18757 transitions. Word has length 456 [2020-10-29 08:29:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:29:39,229 INFO L481 AbstractCegarLoop]: Abstraction has 16823 states and 18757 transitions. [2020-10-29 08:29:39,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:29:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 16823 states and 18757 transitions. [2020-10-29 08:29:39,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2020-10-29 08:29:39,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:29:39,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:29:39,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:29:39,267 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:29:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:29:39,267 INFO L82 PathProgramCache]: Analyzing trace with hash -587087529, now seen corresponding path program 1 times [2020-10-29 08:29:39,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:29:39,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975472117] [2020-10-29 08:29:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:29:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:40,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:44,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:44,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1005 [2020-10-29 08:29:44,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:29:44,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-29 08:29:44,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:44,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:44,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:29:44,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:29:44,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:29:44,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:29:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:44,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:44,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:44,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:29:44,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:44,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:29:44,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:44,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:44,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:44,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:44,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:44,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:44,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:29:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:45,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:45,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:45,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:29:45,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:45,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 08:29:45,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:45,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:45,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:45,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:29:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:45,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:45,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:45,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:29:45,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:45,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 08:29:45,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:45,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:45,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:45,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:29:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:45,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:45,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:45,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:29:45,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:45,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:29:45,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:45,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:45,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:45,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:29:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:45,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:46,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:46,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:29:46,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:46,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 08:29:46,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:46,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:29:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:46,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:29:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:46,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:46,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:29:46,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:46,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:29:46,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:46,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:46,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:46,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:29:46,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:46,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:29:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:46,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:46,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:46,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:29:46,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:46,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 08:29:46,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:46,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:29:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:29:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:29:46,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 08:29:47,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975472117] [2020-10-29 08:29:47,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:29:47,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:29:47,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700271096] [2020-10-29 08:29:47,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:29:47,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:29:47,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:29:47,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:29:47,020 INFO L87 Difference]: Start difference. First operand 16823 states and 18757 transitions. Second operand 7 states. [2020-10-29 08:30:01,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:01,214 INFO L93 Difference]: Finished difference Result 38345 states and 44170 transitions. [2020-10-29 08:30:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:30:01,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 983 [2020-10-29 08:30:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:01,295 INFO L225 Difference]: With dead ends: 38345 [2020-10-29 08:30:01,295 INFO L226 Difference]: Without dead ends: 22940 [2020-10-29 08:30:01,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:30:01,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22940 states. [2020-10-29 08:30:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22940 to 22046. [2020-10-29 08:30:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22046 states. [2020-10-29 08:30:01,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22046 states to 22046 states and 25105 transitions. [2020-10-29 08:30:01,784 INFO L78 Accepts]: Start accepts. Automaton has 22046 states and 25105 transitions. Word has length 983 [2020-10-29 08:30:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:01,786 INFO L481 AbstractCegarLoop]: Abstraction has 22046 states and 25105 transitions. [2020-10-29 08:30:01,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:01,787 INFO L276 IsEmpty]: Start isEmpty. Operand 22046 states and 25105 transitions. [2020-10-29 08:30:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2020-10-29 08:30:01,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:01,950 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:01,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:30:01,951 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:01,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:01,952 INFO L82 PathProgramCache]: Analyzing trace with hash -2058598989, now seen corresponding path program 1 times [2020-10-29 08:30:01,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:01,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270390547] [2020-10-29 08:30:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:02,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:03,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:03,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1012 [2020-10-29 08:30:03,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:03,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1309 [2020-10-29 08:30:03,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:03,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:03,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:03,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:30:03,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:30:03,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:03,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:03,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:03,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:03,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:03,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:03,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:30:03,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:03,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:03,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:04,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:04,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:30:04,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 08:30:04,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:04,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:04,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:04,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:30:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:04,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:04,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:30:04,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:04,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 08:30:04,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:04,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:04,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:04,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:04,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:04,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:04,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:30:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:04,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:04,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:04,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:30:04,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:30:04,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:04,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:04,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:04,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:30:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:04,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:05,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:05,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:30:05,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-29 08:30:05,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:05,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:30:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:05,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:30:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:05,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:05,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:05,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:30:05,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:30:05,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:05,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:30:05,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:30:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:05,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:05,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:05,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:30:05,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:05,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 08:30:05,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:05,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:30:05,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:06,082 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 08:30:06,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270390547] [2020-10-29 08:30:06,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:30:06,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:30:06,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111322260] [2020-10-29 08:30:06,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:06,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:06,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:06,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:06,085 INFO L87 Difference]: Start difference. First operand 22046 states and 25105 transitions. Second operand 7 states. [2020-10-29 08:30:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:25,157 INFO L93 Difference]: Finished difference Result 47888 states and 55176 transitions. [2020-10-29 08:30:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:30:25,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 990 [2020-10-29 08:30:25,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:25,239 INFO L225 Difference]: With dead ends: 47888 [2020-10-29 08:30:25,239 INFO L226 Difference]: Without dead ends: 27260 [2020-10-29 08:30:25,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:30:25,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27260 states. [2020-10-29 08:30:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27260 to 27045. [2020-10-29 08:30:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27045 states. [2020-10-29 08:30:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27045 states to 27045 states and 30517 transitions. [2020-10-29 08:30:25,972 INFO L78 Accepts]: Start accepts. Automaton has 27045 states and 30517 transitions. Word has length 990 [2020-10-29 08:30:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:25,973 INFO L481 AbstractCegarLoop]: Abstraction has 27045 states and 30517 transitions. [2020-10-29 08:30:25,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 27045 states and 30517 transitions. [2020-10-29 08:30:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2020-10-29 08:30:25,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:25,991 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:25,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:30:25,992 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:25,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:25,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1206102012, now seen corresponding path program 1 times [2020-10-29 08:30:25,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:25,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308758805] [2020-10-29 08:30:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:26,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:26,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:31,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:31,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1083 [2020-10-29 08:30:31,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:30:31,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 08:30:31,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:31,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:30:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:30:31,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:31,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:31,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:31,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:31,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:31,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:30:31,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:31,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:31,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:31,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:31,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:31,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:31,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:30:31,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 08:30:31,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:31,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:31,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:30:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:31,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:31,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:31,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:30:31,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:31,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 08:30:31,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:31,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:31,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:30:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:31,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:31,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:31,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:30:31,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:30:31,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:31,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:31,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:32,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:30:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:32,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:32,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:30:32,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:32,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 08:30:32,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:32,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:30:32,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:32,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:30:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:32,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:32,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:32,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:30:32,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:32,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:30:32,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:32,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:32,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:32,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:32,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:30:32,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:32,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:30:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:32,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:32,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:32,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:30:32,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:32,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:30:32,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:32,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:32,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:32,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:32,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:30:32,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:32,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-29 08:30:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:32,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:32,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:32,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:30:32,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:32,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:30:32,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:32,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:32,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:32,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 08:30:32,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:32,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 366 proven. 75 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2020-10-29 08:30:33,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308758805] [2020-10-29 08:30:33,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:30:33,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:30:33,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259409868] [2020-10-29 08:30:33,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:30:33,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:33,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:30:33,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:30:33,480 INFO L87 Difference]: Start difference. First operand 27045 states and 30517 transitions. Second operand 8 states. [2020-10-29 08:30:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:49,446 INFO L93 Difference]: Finished difference Result 65009 states and 75103 transitions. [2020-10-29 08:30:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:30:49,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1059 [2020-10-29 08:30:49,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:49,545 INFO L225 Difference]: With dead ends: 65009 [2020-10-29 08:30:49,545 INFO L226 Difference]: Without dead ends: 39382 [2020-10-29 08:30:49,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:30:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39382 states. [2020-10-29 08:30:50,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39382 to 39298. [2020-10-29 08:30:50,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39298 states. [2020-10-29 08:30:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39298 states to 39298 states and 45331 transitions. [2020-10-29 08:30:50,304 INFO L78 Accepts]: Start accepts. Automaton has 39298 states and 45331 transitions. Word has length 1059 [2020-10-29 08:30:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:50,305 INFO L481 AbstractCegarLoop]: Abstraction has 39298 states and 45331 transitions. [2020-10-29 08:30:50,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:30:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 39298 states and 45331 transitions. [2020-10-29 08:30:50,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1127 [2020-10-29 08:30:50,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:50,322 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:50,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:30:50,323 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:50,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:50,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1594683568, now seen corresponding path program 1 times [2020-10-29 08:30:50,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:50,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596779598] [2020-10-29 08:30:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:50,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:51,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:55,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:55,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1150 [2020-10-29 08:30:55,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:55,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4396 [2020-10-29 08:30:55,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:55,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:55,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:55,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-29 08:30:55,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 08:30:55,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:55,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:55,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:55,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:55,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:55,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:55,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:30:55,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:55,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:55,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:55,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:55,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:55,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:55,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:30:55,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 08:30:55,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:55,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:55,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:55,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:30:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:55,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:55,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:30:55,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:55,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:30:55,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:55,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:55,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:55,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:30:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:55,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:55,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:55,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:30:55,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:55,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:30:55,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:55,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:55,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:55,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:55,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:55,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:56,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:30:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:56,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:56,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:56,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:30:56,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:56,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 08:30:56,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:56,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:56,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:56,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:56,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:56,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:56,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:30:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:56,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:56,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:30:56,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:56,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:30:56,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:56,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:56,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:56,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:56,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:56,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:56,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:30:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:56,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:56,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:56,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:30:56,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 08:30:56,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:56,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:30:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:56,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-29 08:30:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:56,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:56,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:56,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:30:56,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:56,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 08:30:56,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:56,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:30:56,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 475 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-29 08:30:57,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596779598] [2020-10-29 08:30:57,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:30:57,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:30:57,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4050964] [2020-10-29 08:30:57,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:57,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:57,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:57,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:57,252 INFO L87 Difference]: Start difference. First operand 39298 states and 45331 transitions. Second operand 7 states. [2020-10-29 08:31:12,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:12,718 INFO L93 Difference]: Finished difference Result 88681 states and 104228 transitions. [2020-10-29 08:31:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:31:12,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1126 [2020-10-29 08:31:12,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:12,866 INFO L225 Difference]: With dead ends: 88681 [2020-10-29 08:31:12,866 INFO L226 Difference]: Without dead ends: 50801 [2020-10-29 08:31:12,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:31:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50801 states. [2020-10-29 08:31:13,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50801 to 50742. [2020-10-29 08:31:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50742 states. [2020-10-29 08:31:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50742 states to 50742 states and 58641 transitions. [2020-10-29 08:31:14,069 INFO L78 Accepts]: Start accepts. Automaton has 50742 states and 58641 transitions. Word has length 1126 [2020-10-29 08:31:14,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:14,071 INFO L481 AbstractCegarLoop]: Abstraction has 50742 states and 58641 transitions. [2020-10-29 08:31:14,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:31:14,071 INFO L276 IsEmpty]: Start isEmpty. Operand 50742 states and 58641 transitions. [2020-10-29 08:31:14,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1134 [2020-10-29 08:31:14,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:14,091 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:31:14,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:31:14,091 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:14,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1690238362, now seen corresponding path program 1 times [2020-10-29 08:31:14,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:14,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085409873] [2020-10-29 08:31:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking...