/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:26:57,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:26:57,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:26:57,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:26:57,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:26:57,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:26:57,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:26:57,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:26:57,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:26:57,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:26:57,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:26:57,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:26:57,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:26:57,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:26:57,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:26:57,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:26:57,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:26:57,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:26:57,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:26:57,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:26:57,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:26:57,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:26:57,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:26:57,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:26:57,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:26:57,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:26:57,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:26:57,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:26:57,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:26:57,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:26:57,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:26:57,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:26:57,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:26:57,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:26:57,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:26:57,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:26:57,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:26:57,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:26:57,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:26:57,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:26:57,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:26:57,709 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 [2020-09-25 03:26:57,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:26:57,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:26:57,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:26:57,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:26:57,736 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:26:57,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:26:57,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:26:57,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:26:57,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:26:57,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:26:57,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:26:57,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:26:57,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:26:57,738 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:26:57,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:26:57,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:26:57,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:26:57,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:26:57,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:26:57,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:26:57,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:26:57,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:26:57,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:26:57,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:26:57,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:26:57,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:26:57,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:26:57,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:26:57,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:26:57,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=true; [2020-09-25 03:26:58,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:26:58,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:26:58,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:26:58,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:26:58,264 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:26:58,265 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 03:26:58,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b6601d77/6cef7eb3da8c49aa8c25948bf1f34786/FLAG1b2790394 [2020-09-25 03:26:58,950 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:26:58,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 03:26:58,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b6601d77/6cef7eb3da8c49aa8c25948bf1f34786/FLAG1b2790394 [2020-09-25 03:26:59,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b6601d77/6cef7eb3da8c49aa8c25948bf1f34786 [2020-09-25 03:26:59,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:26:59,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:26:59,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:26:59,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:26:59,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:26:59,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:26:59" (1/1) ... [2020-09-25 03:26:59,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656a7a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:59, skipping insertion in model container [2020-09-25 03:26:59,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:26:59" (1/1) ... [2020-09-25 03:26:59,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:26:59,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:26:59,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:26:59,638 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:26:59,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:26:59,800 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:26:59,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:59 WrapperNode [2020-09-25 03:26:59,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:26:59,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:26:59,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:26:59,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:26:59,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:59" (1/1) ... [2020-09-25 03:26:59,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:59" (1/1) ... [2020-09-25 03:26:59,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:59" (1/1) ... [2020-09-25 03:26:59,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:59" (1/1) ... [2020-09-25 03:26:59,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:59" (1/1) ... [2020-09-25 03:26:59,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:59" (1/1) ... [2020-09-25 03:26:59,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:59" (1/1) ... [2020-09-25 03:26:59,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:26:59,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:26:59,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:26:59,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:26:59,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:26:59,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:26:59,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:26:59,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:26:59,943 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 03:26:59,944 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 03:26:59,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:26:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:26:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:26:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 03:26:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 03:26:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 03:26:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 03:26:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 03:26:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 03:26:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 03:26:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 03:26:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 03:26:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 03:26:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 03:26:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 03:26:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 03:26:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 03:26:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 03:26:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 03:26:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 03:26:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 03:26:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 03:26:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 03:26:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 03:26:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 03:26:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 03:26:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 03:26:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 03:26:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 03:26:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:26:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:26:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:26:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:26:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:26:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:26:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:27:00,496 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:27:00,496 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 03:27:00,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:27:00 BoogieIcfgContainer [2020-09-25 03:27:00,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:27:00,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:27:00,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:27:00,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:27:00,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:26:59" (1/3) ... [2020-09-25 03:27:00,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668b56be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:27:00, skipping insertion in model container [2020-09-25 03:27:00,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:59" (2/3) ... [2020-09-25 03:27:00,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668b56be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:27:00, skipping insertion in model container [2020-09-25 03:27:00,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:27:00" (3/3) ... [2020-09-25 03:27:00,528 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 03:27:00,542 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:27:00,555 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:27:00,579 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:27:00,615 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:27:00,616 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:27:00,616 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:27:00,616 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:27:00,616 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:27:00,616 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:27:00,616 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:27:00,616 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:27:00,644 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 03:27:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 03:27:00,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:00,658 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] [2020-09-25 03:27:00,658 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:00,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:00,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 03:27:00,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:00,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173754444] [2020-09-25 03:27:00,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:00,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:01,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:01,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:02,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:03,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:03,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 03:27:03,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:27:03,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2273 [2020-09-25 03:27:03,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:27:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:27:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 03:27:03,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:27:03,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:03,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:03,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:03,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:27:03,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:03,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:27:03,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:03,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:03,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 03:27:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:03,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:03,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:03,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:03,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 03:27:03,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:03,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:03,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:03,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:27:03,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:03,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173754444] [2020-09-25 03:27:03,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:03,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:27:03,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018755170] [2020-09-25 03:27:03,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:27:03,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:03,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:27:03,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:27:03,460 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-25 03:27:04,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:04,194 INFO L93 Difference]: Finished difference Result 325 states and 377 transitions. [2020-09-25 03:27:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:27:04,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-09-25 03:27:04,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:04,215 INFO L225 Difference]: With dead ends: 325 [2020-09-25 03:27:04,216 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 03:27:04,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:27:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 03:27:04,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 159. [2020-09-25 03:27:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 03:27:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2020-09-25 03:27:04,304 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 48 [2020-09-25 03:27:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:04,305 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2020-09-25 03:27:04,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:27:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2020-09-25 03:27:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 03:27:04,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:04,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:04,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:27:04,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:04,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:04,312 INFO L82 PathProgramCache]: Analyzing trace with hash 279562443, now seen corresponding path program 1 times [2020-09-25 03:27:04,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:04,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182574341] [2020-09-25 03:27:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:04,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:04,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:05,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:07,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:08,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:09,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:09,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 03:27:09,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:27:09,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 03:27:09,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:27:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:27:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:27:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:09,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:09,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:09,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:09,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:27:09,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:09,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:09,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:09,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:09,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:09,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:09,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:27:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 03:27:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:09,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:09,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:09,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:27:09,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:27:09,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:09,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182574341] [2020-09-25 03:27:09,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:09,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 03:27:09,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170667541] [2020-09-25 03:27:09,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:27:09,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:09,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:27:09,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:27:09,583 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand 10 states. [2020-09-25 03:27:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:10,409 INFO L93 Difference]: Finished difference Result 498 states and 566 transitions. [2020-09-25 03:27:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:27:10,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-09-25 03:27:10,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:10,419 INFO L225 Difference]: With dead ends: 498 [2020-09-25 03:27:10,419 INFO L226 Difference]: Without dead ends: 396 [2020-09-25 03:27:10,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-09-25 03:27:10,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-09-25 03:27:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 229. [2020-09-25 03:27:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-25 03:27:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 263 transitions. [2020-09-25 03:27:10,477 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 263 transitions. Word has length 62 [2020-09-25 03:27:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:10,478 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 263 transitions. [2020-09-25 03:27:10,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:27:10,479 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 263 transitions. [2020-09-25 03:27:10,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 03:27:10,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:10,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:10,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:27:10,483 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:10,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:10,486 INFO L82 PathProgramCache]: Analyzing trace with hash -53936734, now seen corresponding path program 1 times [2020-09-25 03:27:10,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:10,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956455600] [2020-09-25 03:27:10,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:10,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:10,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:10,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:10,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:11,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:11,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:11,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:15,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:15,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:27:15,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:27:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 03:27:15,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:27:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:27:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 03:27:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:15,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:15,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:15,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:15,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:27:15,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:15,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:27:15,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:15,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:15,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:15,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:15,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 03:27:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:15,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:15,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:15,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:15,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:15,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:15,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:15,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:15,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:27:15,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 03:27:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:15,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956455600] [2020-09-25 03:27:15,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:15,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:27:15,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695507889] [2020-09-25 03:27:15,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:27:15,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:15,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:27:15,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:27:15,737 INFO L87 Difference]: Start difference. First operand 229 states and 263 transitions. Second operand 8 states. [2020-09-25 03:27:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:16,433 INFO L93 Difference]: Finished difference Result 453 states and 518 transitions. [2020-09-25 03:27:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:27:16,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 03:27:16,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:16,438 INFO L225 Difference]: With dead ends: 453 [2020-09-25 03:27:16,438 INFO L226 Difference]: Without dead ends: 322 [2020-09-25 03:27:16,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:27:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-09-25 03:27:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 251. [2020-09-25 03:27:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-09-25 03:27:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 289 transitions. [2020-09-25 03:27:16,480 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 289 transitions. Word has length 63 [2020-09-25 03:27:16,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:16,484 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 289 transitions. [2020-09-25 03:27:16,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:27:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 289 transitions. [2020-09-25 03:27:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 03:27:16,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:16,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:16,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:27:16,490 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:16,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:16,491 INFO L82 PathProgramCache]: Analyzing trace with hash 322027262, now seen corresponding path program 1 times [2020-09-25 03:27:16,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:16,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379127615] [2020-09-25 03:27:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:16,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:16,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:16,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:16,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:16,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:16,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:18,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:21,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:21,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:27:21,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:27:21,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 03:27:21,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:21,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:27:21,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:27:21,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 03:27:21,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:21,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:21,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:21,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:21,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:27:21,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:21,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:27:21,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:21,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 03:27:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:21,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:21,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:21,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:21,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:27:21,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:21,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:27:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:21,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:21,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379127615] [2020-09-25 03:27:21,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:21,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:27:21,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036442200] [2020-09-25 03:27:21,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:27:21,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:21,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:27:21,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:27:21,652 INFO L87 Difference]: Start difference. First operand 251 states and 289 transitions. Second operand 8 states. [2020-09-25 03:27:22,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:22,061 INFO L93 Difference]: Finished difference Result 456 states and 525 transitions. [2020-09-25 03:27:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:27:22,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 03:27:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:22,069 INFO L225 Difference]: With dead ends: 456 [2020-09-25 03:27:22,069 INFO L226 Difference]: Without dead ends: 313 [2020-09-25 03:27:22,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:27:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-09-25 03:27:22,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 263. [2020-09-25 03:27:22,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-09-25 03:27:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 303 transitions. [2020-09-25 03:27:22,098 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 303 transitions. Word has length 63 [2020-09-25 03:27:22,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:22,100 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 303 transitions. [2020-09-25 03:27:22,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:27:22,101 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 303 transitions. [2020-09-25 03:27:22,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 03:27:22,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:22,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:22,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:27:22,114 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:22,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:22,114 INFO L82 PathProgramCache]: Analyzing trace with hash 2088092010, now seen corresponding path program 1 times [2020-09-25 03:27:22,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:22,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511993101] [2020-09-25 03:27:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:22,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:22,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:22,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:22,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:22,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:24,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:26,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:26,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:27,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:27,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 03:27:27,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 03:27:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:27:27,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:27:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:27:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 03:27:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:27,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:27,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:27,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:27:27,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:27:27,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:27,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 03:27:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:27,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:27,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:27,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:27,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:27:27,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:27:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:27,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:27,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511993101] [2020-09-25 03:27:27,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:27,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 03:27:27,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492678874] [2020-09-25 03:27:27,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:27:27,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:27,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:27:27,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:27:27,286 INFO L87 Difference]: Start difference. First operand 263 states and 303 transitions. Second operand 10 states. [2020-09-25 03:27:27,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:27,967 INFO L93 Difference]: Finished difference Result 464 states and 530 transitions. [2020-09-25 03:27:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:27:27,967 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-09-25 03:27:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:27,969 INFO L225 Difference]: With dead ends: 464 [2020-09-25 03:27:27,970 INFO L226 Difference]: Without dead ends: 321 [2020-09-25 03:27:27,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:27:27,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-25 03:27:27,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 263. [2020-09-25 03:27:27,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-09-25 03:27:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 302 transitions. [2020-09-25 03:27:27,990 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 302 transitions. Word has length 66 [2020-09-25 03:27:27,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:27,990 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 302 transitions. [2020-09-25 03:27:27,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:27:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 302 transitions. [2020-09-25 03:27:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 03:27:27,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:27,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:27,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:27:27,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:27,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:27,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1110941080, now seen corresponding path program 1 times [2020-09-25 03:27:27,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:27,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725036334] [2020-09-25 03:27:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:28,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:28,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:28,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:28,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:28,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:28,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:28,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:31,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:31,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:33,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:33,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 03:27:33,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:27:33,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 03:27:33,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:33,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:27:33,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:27:33,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:27:33,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:33,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:33,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:33,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:33,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:27:33,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:33,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:27:33,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:33,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 03:27:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:33,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:33,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:33,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:27:33,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:33,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:27:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:33,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725036334] [2020-09-25 03:27:33,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:33,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 03:27:33,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803544614] [2020-09-25 03:27:33,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:27:33,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:33,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:27:33,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:27:33,155 INFO L87 Difference]: Start difference. First operand 263 states and 302 transitions. Second operand 9 states. [2020-09-25 03:27:34,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:34,004 INFO L93 Difference]: Finished difference Result 651 states and 748 transitions. [2020-09-25 03:27:34,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:27:34,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 03:27:34,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:34,009 INFO L225 Difference]: With dead ends: 651 [2020-09-25 03:27:34,009 INFO L226 Difference]: Without dead ends: 520 [2020-09-25 03:27:34,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:27:34,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-09-25 03:27:34,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 281. [2020-09-25 03:27:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-09-25 03:27:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 323 transitions. [2020-09-25 03:27:34,027 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 323 transitions. Word has length 67 [2020-09-25 03:27:34,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:34,028 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 323 transitions. [2020-09-25 03:27:34,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:27:34,028 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 323 transitions. [2020-09-25 03:27:34,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 03:27:34,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:34,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:34,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:27:34,031 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:34,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:34,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1954483592, now seen corresponding path program 1 times [2020-09-25 03:27:34,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:34,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92436931] [2020-09-25 03:27:34,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:34,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:34,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:34,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:34,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:34,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:35,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:35,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:39,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:39,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 03:27:39,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:27:39,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:27:39,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:27:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:27:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:27:39,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:39,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:39,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:39,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:39,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:27:39,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:39,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:27:39,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:39,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:39,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 03:27:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:39,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:39,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:39,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:39,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:39,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:27:39,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:27:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:39,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:39,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92436931] [2020-09-25 03:27:39,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:39,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 03:27:39,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851550301] [2020-09-25 03:27:39,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:27:39,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:39,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:27:39,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:27:39,177 INFO L87 Difference]: Start difference. First operand 281 states and 323 transitions. Second operand 10 states. [2020-09-25 03:27:40,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:40,054 INFO L93 Difference]: Finished difference Result 604 states and 690 transitions. [2020-09-25 03:27:40,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 03:27:40,055 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 03:27:40,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:40,059 INFO L225 Difference]: With dead ends: 604 [2020-09-25 03:27:40,059 INFO L226 Difference]: Without dead ends: 442 [2020-09-25 03:27:40,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2020-09-25 03:27:40,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-09-25 03:27:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 290. [2020-09-25 03:27:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-09-25 03:27:40,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 333 transitions. [2020-09-25 03:27:40,075 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 333 transitions. Word has length 67 [2020-09-25 03:27:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:40,076 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 333 transitions. [2020-09-25 03:27:40,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:27:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 333 transitions. [2020-09-25 03:27:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 03:27:40,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:40,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:40,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:27:40,078 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:40,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:40,079 INFO L82 PathProgramCache]: Analyzing trace with hash -723132700, now seen corresponding path program 1 times [2020-09-25 03:27:40,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:40,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644830772] [2020-09-25 03:27:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:40,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:40,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:40,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:40,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:41,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:41,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:44,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:45,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:45,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 03:27:45,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:27:45,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 03:27:45,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:27:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:27:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:27:45,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:45,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:45,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:45,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:45,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:27:45,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:45,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:27:45,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:45,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:45,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 03:27:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:45,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:45,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:45,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:45,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:27:45,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:27:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:45,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:45,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644830772] [2020-09-25 03:27:45,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:45,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 03:27:45,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680139612] [2020-09-25 03:27:45,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:27:45,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:45,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:27:45,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:27:45,215 INFO L87 Difference]: Start difference. First operand 290 states and 333 transitions. Second operand 10 states. [2020-09-25 03:27:45,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:45,833 INFO L93 Difference]: Finished difference Result 495 states and 566 transitions. [2020-09-25 03:27:45,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:27:45,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-09-25 03:27:45,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:45,836 INFO L225 Difference]: With dead ends: 495 [2020-09-25 03:27:45,837 INFO L226 Difference]: Without dead ends: 342 [2020-09-25 03:27:45,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:27:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-09-25 03:27:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 302. [2020-09-25 03:27:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-09-25 03:27:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 345 transitions. [2020-09-25 03:27:45,856 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 345 transitions. Word has length 70 [2020-09-25 03:27:45,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:45,856 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 345 transitions. [2020-09-25 03:27:45,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:27:45,856 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 345 transitions. [2020-09-25 03:27:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 03:27:45,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:45,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:45,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:27:45,858 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:45,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:45,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1427185919, now seen corresponding path program 1 times [2020-09-25 03:27:45,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:45,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779303319] [2020-09-25 03:27:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:45,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:45,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:45,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:45,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking...