/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:39:12,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:39:12,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:39:12,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:39:12,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:39:12,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:39:12,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:39:12,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:39:12,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:39:12,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:39:12,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:39:12,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:39:12,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:39:12,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:39:12,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:39:12,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:39:12,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:39:12,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:39:12,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:39:12,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:39:12,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:39:12,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:39:12,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:39:12,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:39:12,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:39:12,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:39:12,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:39:12,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:39:12,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:39:12,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:39:12,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:39:12,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:39:12,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:39:12,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:39:12,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:39:12,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:39:12,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:39:12,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:39:12,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:39:12,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:39:12,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:39:12,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:39:12,503 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:39:12,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:39:12,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:39:12,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:39:12,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:39:12,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:39:12,505 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:39:12,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:39:12,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:39:12,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:39:12,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:39:12,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:39:12,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:39:12,506 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:39:12,506 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:39:12,506 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:39:12,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:39:12,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:39:12,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:39:12,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:39:12,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:39:12,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:39:12,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:39:12,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:39:12,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:39:12,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:39:12,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:39:12,508 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:39:12,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:39:12,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:39:12,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:39:12,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:39:12,509 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:39:12,509 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:39:12,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:39:12,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:39:12,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:39:12,723 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:39:12,724 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:39:12,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-01-11 06:39:12,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33dd73320/713d4cbe226a4bb5b1c9b27561d5d4c0/FLAG3a4389100 [2022-01-11 06:39:13,179 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:39:13,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-01-11 06:39:13,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33dd73320/713d4cbe226a4bb5b1c9b27561d5d4c0/FLAG3a4389100 [2022-01-11 06:39:13,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33dd73320/713d4cbe226a4bb5b1c9b27561d5d4c0 [2022-01-11 06:39:13,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:39:13,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:39:13,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:39:13,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:39:13,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:39:13,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:39:13" (1/1) ... [2022-01-11 06:39:13,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf56f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13, skipping insertion in model container [2022-01-11 06:39:13,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:39:13" (1/1) ... [2022-01-11 06:39:13,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:39:13,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:39:13,472 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2022-01-11 06:39:13,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:39:13,537 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:39:13,601 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2022-01-11 06:39:13,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:39:13,662 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:39:13,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13 WrapperNode [2022-01-11 06:39:13,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:39:13,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:39:13,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:39:13,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:39:13,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13" (1/1) ... [2022-01-11 06:39:13,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13" (1/1) ... [2022-01-11 06:39:13,717 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 811 [2022-01-11 06:39:13,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:39:13,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:39:13,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:39:13,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:39:13,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13" (1/1) ... [2022-01-11 06:39:13,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13" (1/1) ... [2022-01-11 06:39:13,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13" (1/1) ... [2022-01-11 06:39:13,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13" (1/1) ... [2022-01-11 06:39:13,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13" (1/1) ... [2022-01-11 06:39:13,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13" (1/1) ... [2022-01-11 06:39:13,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13" (1/1) ... [2022-01-11 06:39:13,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:39:13,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:39:13,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:39:13,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:39:13,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13" (1/1) ... [2022-01-11 06:39:13,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:39:13,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:39:13,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:39:13,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:39:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:39:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:39:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:39:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:39:13,980 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:39:13,982 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:39:14,501 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:39:14,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:39:14,507 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:39:14,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:39:14 BoogieIcfgContainer [2022-01-11 06:39:14,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:39:14,509 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:39:14,509 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:39:14,510 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:39:14,512 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:39:14" (1/1) ... [2022-01-11 06:39:15,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:39:15 BasicIcfg [2022-01-11 06:39:15,022 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:39:15,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:39:15,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:39:15,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:39:15,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:39:13" (1/4) ... [2022-01-11 06:39:15,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1090bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:39:15, skipping insertion in model container [2022-01-11 06:39:15,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:13" (2/4) ... [2022-01-11 06:39:15,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1090bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:39:15, skipping insertion in model container [2022-01-11 06:39:15,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:39:14" (3/4) ... [2022-01-11 06:39:15,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1090bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:39:15, skipping insertion in model container [2022-01-11 06:39:15,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:39:15" (4/4) ... [2022-01-11 06:39:15,028 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.cTransformedIcfg [2022-01-11 06:39:15,032 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:39:15,033 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:39:15,069 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:39:15,074 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:39:15,074 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:39:15,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 213 states have (on average 1.676056338028169) internal successors, (357), 214 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 06:39:15,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:15,095 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:15,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:15,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:15,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1197643430, now seen corresponding path program 1 times [2022-01-11 06:39:15,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:15,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965586963] [2022-01-11 06:39:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:15,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:15,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:15,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965586963] [2022-01-11 06:39:15,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965586963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:15,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:15,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:15,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115924481] [2022-01-11 06:39:15,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:15,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:15,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:15,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:15,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:15,536 INFO L87 Difference]: Start difference. First operand has 215 states, 213 states have (on average 1.676056338028169) internal successors, (357), 214 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:15,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:15,660 INFO L93 Difference]: Finished difference Result 547 states and 891 transitions. [2022-01-11 06:39:15,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:15,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-11 06:39:15,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:15,676 INFO L225 Difference]: With dead ends: 547 [2022-01-11 06:39:15,676 INFO L226 Difference]: Without dead ends: 367 [2022-01-11 06:39:15,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:15,684 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 294 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:15,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 716 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:15,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-11 06:39:15,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2022-01-11 06:39:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.6181318681318682) internal successors, (589), 364 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:15,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 589 transitions. [2022-01-11 06:39:15,790 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 589 transitions. Word has length 79 [2022-01-11 06:39:15,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:15,790 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 589 transitions. [2022-01-11 06:39:15,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 589 transitions. [2022-01-11 06:39:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 06:39:15,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:15,794 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:15,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:39:15,794 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:15,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:15,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1121151334, now seen corresponding path program 1 times [2022-01-11 06:39:15,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:15,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112914719] [2022-01-11 06:39:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:15,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:15,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:15,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112914719] [2022-01-11 06:39:15,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112914719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:15,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:15,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:15,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064665589] [2022-01-11 06:39:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:15,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:15,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:15,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:15,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:15,992 INFO L87 Difference]: Start difference. First operand 365 states and 589 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:16,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:16,029 INFO L93 Difference]: Finished difference Result 899 states and 1436 transitions. [2022-01-11 06:39:16,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:16,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 06:39:16,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:16,032 INFO L225 Difference]: With dead ends: 899 [2022-01-11 06:39:16,032 INFO L226 Difference]: Without dead ends: 639 [2022-01-11 06:39:16,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:16,040 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 269 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:16,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 710 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:16,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-01-11 06:39:16,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 637. [2022-01-11 06:39:16,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 1.5959119496855345) internal successors, (1015), 636 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:16,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1015 transitions. [2022-01-11 06:39:16,065 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1015 transitions. Word has length 80 [2022-01-11 06:39:16,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:16,065 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 1015 transitions. [2022-01-11 06:39:16,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:16,066 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1015 transitions. [2022-01-11 06:39:16,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 06:39:16,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:16,074 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:16,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:39:16,076 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:16,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:16,081 INFO L85 PathProgramCache]: Analyzing trace with hash -848773304, now seen corresponding path program 1 times [2022-01-11 06:39:16,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:16,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895175999] [2022-01-11 06:39:16,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:16,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:16,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:16,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895175999] [2022-01-11 06:39:16,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895175999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:16,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:16,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:16,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011514220] [2022-01-11 06:39:16,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:16,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:16,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:16,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:16,215 INFO L87 Difference]: Start difference. First operand 637 states and 1015 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:16,271 INFO L93 Difference]: Finished difference Result 1527 states and 2422 transitions. [2022-01-11 06:39:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:16,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-11 06:39:16,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:16,276 INFO L225 Difference]: With dead ends: 1527 [2022-01-11 06:39:16,276 INFO L226 Difference]: Without dead ends: 1107 [2022-01-11 06:39:16,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:16,281 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 252 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:16,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 726 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-11 06:39:16,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1105. [2022-01-11 06:39:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 1.578804347826087) internal successors, (1743), 1104 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1743 transitions. [2022-01-11 06:39:16,305 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1743 transitions. Word has length 81 [2022-01-11 06:39:16,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:16,305 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 1743 transitions. [2022-01-11 06:39:16,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1743 transitions. [2022-01-11 06:39:16,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 06:39:16,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:16,308 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:16,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:39:16,308 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:16,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:16,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1697237124, now seen corresponding path program 1 times [2022-01-11 06:39:16,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:16,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701294577] [2022-01-11 06:39:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:16,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:16,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:16,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701294577] [2022-01-11 06:39:16,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701294577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:16,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:16,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:16,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860723372] [2022-01-11 06:39:16,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:16,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:16,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:16,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:16,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:16,421 INFO L87 Difference]: Start difference. First operand 1105 states and 1743 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:16,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:16,465 INFO L93 Difference]: Finished difference Result 2583 states and 4066 transitions. [2022-01-11 06:39:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:16,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-11 06:39:16,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:16,471 INFO L225 Difference]: With dead ends: 2583 [2022-01-11 06:39:16,471 INFO L226 Difference]: Without dead ends: 1889 [2022-01-11 06:39:16,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:16,476 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 235 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:16,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 742 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-01-11 06:39:16,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1887. [2022-01-11 06:39:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1886 states have (on average 1.5625662778366913) internal successors, (2947), 1886 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2947 transitions. [2022-01-11 06:39:16,516 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2947 transitions. Word has length 82 [2022-01-11 06:39:16,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:16,518 INFO L470 AbstractCegarLoop]: Abstraction has 1887 states and 2947 transitions. [2022-01-11 06:39:16,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2947 transitions. [2022-01-11 06:39:16,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 06:39:16,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:16,522 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:16,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:39:16,522 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1024249366, now seen corresponding path program 1 times [2022-01-11 06:39:16,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:16,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527102341] [2022-01-11 06:39:16,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:16,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:16,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:16,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527102341] [2022-01-11 06:39:16,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527102341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:16,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:16,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:16,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38641330] [2022-01-11 06:39:16,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:16,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:16,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:16,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:16,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:16,676 INFO L87 Difference]: Start difference. First operand 1887 states and 2947 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:16,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:16,747 INFO L93 Difference]: Finished difference Result 4289 states and 6686 transitions. [2022-01-11 06:39:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:16,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-11 06:39:16,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:16,766 INFO L225 Difference]: With dead ends: 4289 [2022-01-11 06:39:16,766 INFO L226 Difference]: Without dead ends: 3149 [2022-01-11 06:39:16,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:16,772 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 218 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:16,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 758 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:16,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2022-01-11 06:39:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 3147. [2022-01-11 06:39:16,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3147 states, 3146 states have (on average 1.5432294977749523) internal successors, (4855), 3146 states have internal predecessors, (4855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 4855 transitions. [2022-01-11 06:39:16,864 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 4855 transitions. Word has length 83 [2022-01-11 06:39:16,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:16,864 INFO L470 AbstractCegarLoop]: Abstraction has 3147 states and 4855 transitions. [2022-01-11 06:39:16,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:16,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 4855 transitions. [2022-01-11 06:39:16,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 06:39:16,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:16,869 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:16,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:39:16,869 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:16,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:16,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1063234978, now seen corresponding path program 1 times [2022-01-11 06:39:16,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:16,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646154967] [2022-01-11 06:39:16,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:16,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:17,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:17,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646154967] [2022-01-11 06:39:17,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646154967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:17,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:17,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:39:17,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806162295] [2022-01-11 06:39:17,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:17,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:39:17,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:17,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:39:17,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:39:17,037 INFO L87 Difference]: Start difference. First operand 3147 states and 4855 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:17,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:17,138 INFO L93 Difference]: Finished difference Result 5003 states and 7743 transitions. [2022-01-11 06:39:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:39:17,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-11 06:39:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:17,144 INFO L225 Difference]: With dead ends: 5003 [2022-01-11 06:39:17,144 INFO L226 Difference]: Without dead ends: 1889 [2022-01-11 06:39:17,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:39:17,148 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 53 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:17,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 825 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:17,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-01-11 06:39:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1889. [2022-01-11 06:39:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 1.5471398305084745) internal successors, (2921), 1888 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2921 transitions. [2022-01-11 06:39:17,192 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2921 transitions. Word has length 84 [2022-01-11 06:39:17,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:17,192 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 2921 transitions. [2022-01-11 06:39:17,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:17,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2921 transitions. [2022-01-11 06:39:17,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-11 06:39:17,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:17,195 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:17,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:39:17,195 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:17,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:17,196 INFO L85 PathProgramCache]: Analyzing trace with hash 22028217, now seen corresponding path program 1 times [2022-01-11 06:39:17,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:17,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506559188] [2022-01-11 06:39:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:17,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:17,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:17,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506559188] [2022-01-11 06:39:17,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506559188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:17,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:17,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:39:17,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906343523] [2022-01-11 06:39:17,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:17,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:39:17,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:17,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:39:17,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:39:17,530 INFO L87 Difference]: Start difference. First operand 1889 states and 2921 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:17,571 INFO L93 Difference]: Finished difference Result 3707 states and 5756 transitions. [2022-01-11 06:39:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:39:17,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-01-11 06:39:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:17,578 INFO L225 Difference]: With dead ends: 3707 [2022-01-11 06:39:17,578 INFO L226 Difference]: Without dead ends: 1889 [2022-01-11 06:39:17,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:39:17,581 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 1 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:17,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 819 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-01-11 06:39:17,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1889. [2022-01-11 06:39:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 1.5455508474576272) internal successors, (2918), 1888 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2918 transitions. [2022-01-11 06:39:17,624 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2918 transitions. Word has length 119 [2022-01-11 06:39:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:17,624 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 2918 transitions. [2022-01-11 06:39:17,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2918 transitions. [2022-01-11 06:39:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-11 06:39:17,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:17,630 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:17,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:39:17,630 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:17,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:17,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1784765163, now seen corresponding path program 1 times [2022-01-11 06:39:17,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:17,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667343028] [2022-01-11 06:39:17,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:17,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:17,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:17,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667343028] [2022-01-11 06:39:17,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667343028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:17,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:17,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:17,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434982927] [2022-01-11 06:39:17,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:17,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:17,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:17,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:17,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:17,784 INFO L87 Difference]: Start difference. First operand 1889 states and 2918 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:19,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:39:22,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:39:22,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:22,285 INFO L93 Difference]: Finished difference Result 4700 states and 7239 transitions. [2022-01-11 06:39:22,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:22,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-01-11 06:39:22,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:22,293 INFO L225 Difference]: With dead ends: 4700 [2022-01-11 06:39:22,294 INFO L226 Difference]: Without dead ends: 2882 [2022-01-11 06:39:22,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:22,296 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 167 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:22,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 670 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-01-11 06:39:22,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2022-01-11 06:39:22,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2880. [2022-01-11 06:39:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2879 states have (on average 1.4956582146578674) internal successors, (4306), 2879 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:22,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4306 transitions. [2022-01-11 06:39:22,395 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4306 transitions. Word has length 121 [2022-01-11 06:39:22,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:22,395 INFO L470 AbstractCegarLoop]: Abstraction has 2880 states and 4306 transitions. [2022-01-11 06:39:22,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:22,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4306 transitions. [2022-01-11 06:39:22,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-11 06:39:22,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:22,399 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:22,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:39:22,400 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:22,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:22,400 INFO L85 PathProgramCache]: Analyzing trace with hash 643810842, now seen corresponding path program 1 times [2022-01-11 06:39:22,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:22,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871592753] [2022-01-11 06:39:22,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:22,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:22,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:22,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871592753] [2022-01-11 06:39:22,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871592753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:22,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:22,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:22,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747801015] [2022-01-11 06:39:22,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:22,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:22,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:22,619 INFO L87 Difference]: Start difference. First operand 2880 states and 4306 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:24,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:24,767 INFO L93 Difference]: Finished difference Result 7159 states and 10627 transitions. [2022-01-11 06:39:24,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:24,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-01-11 06:39:24,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:24,781 INFO L225 Difference]: With dead ends: 7159 [2022-01-11 06:39:24,781 INFO L226 Difference]: Without dead ends: 5125 [2022-01-11 06:39:24,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:24,784 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 158 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:24,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 565 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-11 06:39:24,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2022-01-11 06:39:25,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 5123. [2022-01-11 06:39:25,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 1.4714955095665756) internal successors, (7537), 5122 states have internal predecessors, (7537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 7537 transitions. [2022-01-11 06:39:25,458 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 7537 transitions. Word has length 122 [2022-01-11 06:39:25,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:25,459 INFO L470 AbstractCegarLoop]: Abstraction has 5123 states and 7537 transitions. [2022-01-11 06:39:25,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:25,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 7537 transitions. [2022-01-11 06:39:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 06:39:25,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:25,467 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:25,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:39:25,467 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:25,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:25,467 INFO L85 PathProgramCache]: Analyzing trace with hash 204679678, now seen corresponding path program 1 times [2022-01-11 06:39:25,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:25,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681985771] [2022-01-11 06:39:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:25,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:25,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:25,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681985771] [2022-01-11 06:39:25,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681985771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:25,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:25,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:39:25,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001602354] [2022-01-11 06:39:25,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:25,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:39:25,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:39:25,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:39:25,659 INFO L87 Difference]: Start difference. First operand 5123 states and 7537 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:26,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:26,367 INFO L93 Difference]: Finished difference Result 8869 states and 13010 transitions. [2022-01-11 06:39:26,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:39:26,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-11 06:39:26,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:26,379 INFO L225 Difference]: With dead ends: 8869 [2022-01-11 06:39:26,379 INFO L226 Difference]: Without dead ends: 5031 [2022-01-11 06:39:26,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:39:26,383 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:26,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 810 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:26,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2022-01-11 06:39:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 4560. [2022-01-11 06:39:26,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4559 states have (on average 1.45689844264093) internal successors, (6642), 4559 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 6642 transitions. [2022-01-11 06:39:26,994 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 6642 transitions. Word has length 124 [2022-01-11 06:39:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:26,994 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 6642 transitions. [2022-01-11 06:39:26,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 6642 transitions. [2022-01-11 06:39:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:39:27,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:27,001 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:27,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:39:27,015 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:27,015 INFO L85 PathProgramCache]: Analyzing trace with hash 969193240, now seen corresponding path program 1 times [2022-01-11 06:39:27,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:27,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767984847] [2022-01-11 06:39:27,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:27,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:27,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:27,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767984847] [2022-01-11 06:39:27,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767984847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:27,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:27,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:27,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149923535] [2022-01-11 06:39:27,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:27,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:27,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:27,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:27,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:27,167 INFO L87 Difference]: Start difference. First operand 4560 states and 6642 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:29,177 INFO L93 Difference]: Finished difference Result 11551 states and 16872 transitions. [2022-01-11 06:39:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:29,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 06:39:29,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:29,192 INFO L225 Difference]: With dead ends: 11551 [2022-01-11 06:39:29,193 INFO L226 Difference]: Without dead ends: 7821 [2022-01-11 06:39:29,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:29,197 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 148 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:29,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 507 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 06:39:29,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7821 states. [2022-01-11 06:39:30,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7821 to 7596. [2022-01-11 06:39:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7596 states, 7595 states have (on average 1.4563528637261356) internal successors, (11061), 7595 states have internal predecessors, (11061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:30,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7596 states to 7596 states and 11061 transitions. [2022-01-11 06:39:30,664 INFO L78 Accepts]: Start accepts. Automaton has 7596 states and 11061 transitions. Word has length 127 [2022-01-11 06:39:30,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:30,664 INFO L470 AbstractCegarLoop]: Abstraction has 7596 states and 11061 transitions. [2022-01-11 06:39:30,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:30,664 INFO L276 IsEmpty]: Start isEmpty. Operand 7596 states and 11061 transitions. [2022-01-11 06:39:30,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:39:30,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:30,671 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:30,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:39:30,671 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:30,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1790268456, now seen corresponding path program 1 times [2022-01-11 06:39:30,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:30,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319229175] [2022-01-11 06:39:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:30,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:30,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:30,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:30,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319229175] [2022-01-11 06:39:30,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319229175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:30,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:30,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:30,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089565212] [2022-01-11 06:39:30,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:30,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:30,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:30,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:30,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:30,785 INFO L87 Difference]: Start difference. First operand 7596 states and 11061 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:31,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:31,998 INFO L93 Difference]: Finished difference Result 14050 states and 20531 transitions. [2022-01-11 06:39:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:31,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 06:39:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:32,010 INFO L225 Difference]: With dead ends: 14050 [2022-01-11 06:39:32,010 INFO L226 Difference]: Without dead ends: 7246 [2022-01-11 06:39:32,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:32,016 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 146 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:32,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 494 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:32,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7246 states. [2022-01-11 06:39:33,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7246 to 7244. [2022-01-11 06:39:33,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7244 states, 7243 states have (on average 1.447880712411984) internal successors, (10487), 7243 states have internal predecessors, (10487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:33,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7244 states to 7244 states and 10487 transitions. [2022-01-11 06:39:33,371 INFO L78 Accepts]: Start accepts. Automaton has 7244 states and 10487 transitions. Word has length 127 [2022-01-11 06:39:33,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:33,371 INFO L470 AbstractCegarLoop]: Abstraction has 7244 states and 10487 transitions. [2022-01-11 06:39:33,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:33,371 INFO L276 IsEmpty]: Start isEmpty. Operand 7244 states and 10487 transitions. [2022-01-11 06:39:33,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:39:33,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:33,375 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:33,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:39:33,376 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:33,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:33,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1510034784, now seen corresponding path program 1 times [2022-01-11 06:39:33,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:33,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850387048] [2022-01-11 06:39:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:33,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:33,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:33,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850387048] [2022-01-11 06:39:33,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850387048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:33,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:33,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:33,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863742748] [2022-01-11 06:39:33,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:33,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:33,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:33,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:33,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:33,486 INFO L87 Difference]: Start difference. First operand 7244 states and 10487 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:34,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:34,117 INFO L93 Difference]: Finished difference Result 10470 states and 15173 transitions. [2022-01-11 06:39:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:34,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 06:39:34,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:34,123 INFO L225 Difference]: With dead ends: 10470 [2022-01-11 06:39:34,123 INFO L226 Difference]: Without dead ends: 3746 [2022-01-11 06:39:34,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:34,129 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 129 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:34,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 465 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:34,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2022-01-11 06:39:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3744. [2022-01-11 06:39:34,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 1.4338765695965803) internal successors, (5367), 3743 states have internal predecessors, (5367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5367 transitions. [2022-01-11 06:39:34,719 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5367 transitions. Word has length 127 [2022-01-11 06:39:34,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:34,720 INFO L470 AbstractCegarLoop]: Abstraction has 3744 states and 5367 transitions. [2022-01-11 06:39:34,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:34,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5367 transitions. [2022-01-11 06:39:34,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:39:34,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:34,722 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:34,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:39:34,722 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:34,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:34,722 INFO L85 PathProgramCache]: Analyzing trace with hash 747286188, now seen corresponding path program 1 times [2022-01-11 06:39:34,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:34,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267899109] [2022-01-11 06:39:34,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:34,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:34,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:34,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267899109] [2022-01-11 06:39:34,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267899109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:34,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:34,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:34,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139506405] [2022-01-11 06:39:34,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:34,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:34,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:34,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:34,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:34,830 INFO L87 Difference]: Start difference. First operand 3744 states and 5367 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:35,183 INFO L93 Difference]: Finished difference Result 5350 states and 7677 transitions. [2022-01-11 06:39:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:35,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 06:39:35,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:35,186 INFO L225 Difference]: With dead ends: 5350 [2022-01-11 06:39:35,186 INFO L226 Difference]: Without dead ends: 1942 [2022-01-11 06:39:35,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:35,189 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 112 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:35,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 436 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:35,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2022-01-11 06:39:35,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1940. [2022-01-11 06:39:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1939 states have (on average 1.4187725631768953) internal successors, (2751), 1939 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2751 transitions. [2022-01-11 06:39:35,489 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2751 transitions. Word has length 127 [2022-01-11 06:39:35,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:35,489 INFO L470 AbstractCegarLoop]: Abstraction has 1940 states and 2751 transitions. [2022-01-11 06:39:35,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:35,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2751 transitions. [2022-01-11 06:39:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:39:35,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:35,490 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:35,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:39:35,490 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:35,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:35,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1721763748, now seen corresponding path program 1 times [2022-01-11 06:39:35,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:35,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488486886] [2022-01-11 06:39:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:35,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:35,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:35,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488486886] [2022-01-11 06:39:35,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488486886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:35,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:35,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:35,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386546999] [2022-01-11 06:39:35,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:35,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:35,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:35,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:35,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:35,609 INFO L87 Difference]: Start difference. First operand 1940 states and 2751 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:35,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:35,789 INFO L93 Difference]: Finished difference Result 2730 states and 3877 transitions. [2022-01-11 06:39:35,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:35,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 06:39:35,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:35,792 INFO L225 Difference]: With dead ends: 2730 [2022-01-11 06:39:35,792 INFO L226 Difference]: Without dead ends: 1010 [2022-01-11 06:39:35,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:35,795 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 95 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:35,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 407 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2022-01-11 06:39:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1008. [2022-01-11 06:39:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 1007 states have (on average 1.4011916583912611) internal successors, (1411), 1007 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1411 transitions. [2022-01-11 06:39:35,960 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1411 transitions. Word has length 127 [2022-01-11 06:39:35,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:35,961 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1411 transitions. [2022-01-11 06:39:35,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:35,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1411 transitions. [2022-01-11 06:39:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:39:35,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:35,962 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:35,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:39:35,962 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:35,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1409100496, now seen corresponding path program 1 times [2022-01-11 06:39:35,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:35,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15053055] [2022-01-11 06:39:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:35,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:36,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:36,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15053055] [2022-01-11 06:39:36,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15053055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:36,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:36,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:36,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406144371] [2022-01-11 06:39:36,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:36,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:36,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:36,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:36,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:36,072 INFO L87 Difference]: Start difference. First operand 1008 states and 1411 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:36,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:36,187 INFO L93 Difference]: Finished difference Result 1349 states and 1887 transitions. [2022-01-11 06:39:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:36,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 06:39:36,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:36,188 INFO L225 Difference]: With dead ends: 1349 [2022-01-11 06:39:36,188 INFO L226 Difference]: Without dead ends: 491 [2022-01-11 06:39:36,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:36,189 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 78 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:36,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 379 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:36,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-01-11 06:39:36,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 479. [2022-01-11 06:39:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.3640167364016735) internal successors, (652), 478 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 652 transitions. [2022-01-11 06:39:36,268 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 652 transitions. Word has length 127 [2022-01-11 06:39:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:36,268 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 652 transitions. [2022-01-11 06:39:36,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 652 transitions. [2022-01-11 06:39:36,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:39:36,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:36,269 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:36,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:39:36,269 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:36,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1768493296, now seen corresponding path program 1 times [2022-01-11 06:39:36,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:36,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148692050] [2022-01-11 06:39:36,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:36,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:36,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:36,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148692050] [2022-01-11 06:39:36,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148692050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:36,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:36,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:36,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965936313] [2022-01-11 06:39:36,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:36,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:36,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:36,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:36,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:36,430 INFO L87 Difference]: Start difference. First operand 479 states and 652 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:36,876 INFO L93 Difference]: Finished difference Result 990 states and 1364 transitions. [2022-01-11 06:39:36,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:36,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 06:39:36,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:36,878 INFO L225 Difference]: With dead ends: 990 [2022-01-11 06:39:36,879 INFO L226 Difference]: Without dead ends: 587 [2022-01-11 06:39:36,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:36,879 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 82 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:36,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 579 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 06:39:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-01-11 06:39:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 584. [2022-01-11 06:39:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 1.3619210977701544) internal successors, (794), 583 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 794 transitions. [2022-01-11 06:39:36,968 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 794 transitions. Word has length 127 [2022-01-11 06:39:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:36,968 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 794 transitions. [2022-01-11 06:39:36,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 794 transitions. [2022-01-11 06:39:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 06:39:36,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:36,969 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:36,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:39:36,969 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:36,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:36,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1218422144, now seen corresponding path program 1 times [2022-01-11 06:39:36,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:36,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224228192] [2022-01-11 06:39:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:36,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:37,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:37,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224228192] [2022-01-11 06:39:37,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224228192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:37,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:37,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:39:37,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069544773] [2022-01-11 06:39:37,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:37,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:39:37,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:37,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:39:37,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:39:37,156 INFO L87 Difference]: Start difference. First operand 584 states and 794 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:37,337 INFO L93 Difference]: Finished difference Result 792 states and 1079 transitions. [2022-01-11 06:39:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:39:37,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-11 06:39:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:37,338 INFO L225 Difference]: With dead ends: 792 [2022-01-11 06:39:37,338 INFO L226 Difference]: Without dead ends: 790 [2022-01-11 06:39:37,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:39:37,339 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 223 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:37,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 784 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:37,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-01-11 06:39:37,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 590. [2022-01-11 06:39:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 1.3565365025466893) internal successors, (799), 589 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:37,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 799 transitions. [2022-01-11 06:39:37,433 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 799 transitions. Word has length 128 [2022-01-11 06:39:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:37,434 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 799 transitions. [2022-01-11 06:39:37,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:37,434 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 799 transitions. [2022-01-11 06:39:37,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 06:39:37,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:37,435 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:37,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:39:37,436 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:37,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:37,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1218451935, now seen corresponding path program 1 times [2022-01-11 06:39:37,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:37,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337696140] [2022-01-11 06:39:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:37,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:37,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:37,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:37,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337696140] [2022-01-11 06:39:37,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337696140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:37,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:37,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:37,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491090044] [2022-01-11 06:39:37,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:37,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:37,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:37,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:37,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:37,609 INFO L87 Difference]: Start difference. First operand 590 states and 799 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:38,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:38,416 INFO L93 Difference]: Finished difference Result 1118 states and 1522 transitions. [2022-01-11 06:39:38,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:38,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-11 06:39:38,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:38,418 INFO L225 Difference]: With dead ends: 1118 [2022-01-11 06:39:38,418 INFO L226 Difference]: Without dead ends: 706 [2022-01-11 06:39:38,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:38,419 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 77 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:38,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 441 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 06:39:38,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-01-11 06:39:38,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 702. [2022-01-11 06:39:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.355206847360913) internal successors, (950), 701 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 950 transitions. [2022-01-11 06:39:38,566 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 950 transitions. Word has length 128 [2022-01-11 06:39:38,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:38,567 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 950 transitions. [2022-01-11 06:39:38,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:38,567 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 950 transitions. [2022-01-11 06:39:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 06:39:38,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:38,567 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:38,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:39:38,568 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1041524255, now seen corresponding path program 1 times [2022-01-11 06:39:38,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:38,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552266737] [2022-01-11 06:39:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:38,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:38,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:38,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552266737] [2022-01-11 06:39:38,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552266737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:38,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:38,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:38,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014974262] [2022-01-11 06:39:38,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:38,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:38,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:38,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:38,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:38,684 INFO L87 Difference]: Start difference. First operand 702 states and 950 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:40,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:39:42,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:39:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:43,131 INFO L93 Difference]: Finished difference Result 1276 states and 1732 transitions. [2022-01-11 06:39:43,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:43,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-11 06:39:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:43,134 INFO L225 Difference]: With dead ends: 1276 [2022-01-11 06:39:43,134 INFO L226 Difference]: Without dead ends: 679 [2022-01-11 06:39:43,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:43,136 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 103 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:43,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 365 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-11 06:39:43,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-01-11 06:39:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 666. [2022-01-11 06:39:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.344360902255639) internal successors, (894), 665 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 894 transitions. [2022-01-11 06:39:43,260 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 894 transitions. Word has length 128 [2022-01-11 06:39:43,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:43,260 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 894 transitions. [2022-01-11 06:39:43,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:43,260 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 894 transitions. [2022-01-11 06:39:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-11 06:39:43,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:43,261 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:43,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:39:43,261 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:43,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:43,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2022060435, now seen corresponding path program 1 times [2022-01-11 06:39:43,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:43,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377181736] [2022-01-11 06:39:43,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:43,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:45,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:45,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377181736] [2022-01-11 06:39:45,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377181736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:45,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:45,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-11 06:39:45,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935929603] [2022-01-11 06:39:45,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:45,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-11 06:39:45,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:45,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-11 06:39:45,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-11 06:39:45,248 INFO L87 Difference]: Start difference. First operand 666 states and 894 transitions. Second operand has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:48,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:19,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:21,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []