/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_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:56:29,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:56:29,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:56:29,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:56:29,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:56:29,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:56:29,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:56:29,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:56:29,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:56:29,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:56:29,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:56:29,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:56:29,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:56:29,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:56:29,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:56:29,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:56:29,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:56:29,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:56:29,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:56:29,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:56:29,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:56:29,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:56:29,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:56:29,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:56:29,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:56:29,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:56:29,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:56:29,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:56:29,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:56:29,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:56:29,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:56:29,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:56:29,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:56:29,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:56:29,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:56:29,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:56:29,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:56:29,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:56:29,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:56:29,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:56:29,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:56:29,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:56:29,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:56:29,814 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:56:29,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:56:29,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:56:29,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:56:29,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:56:29,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:56:29,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:56:29,816 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:56:29,817 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:56:29,817 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:56:29,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:56:29,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:56:29,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:56:29,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:56:29,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:56:29,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:56:29,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:56:29,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:56:29,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:56:29,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:56:29,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:56:29,818 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:56:29,818 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:56:29,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:56:29,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:56:29,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:56:29,819 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:56:29,819 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:56:29,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:56:30,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:56:30,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:56:30,011 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:56:30,011 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:56:30,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 00:56:30,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d9961d67/06b5b1f498d14b60a5453e06616ebc6c/FLAG82b020c1c [2022-01-11 00:56:30,400 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:56:30,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 00:56:30,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d9961d67/06b5b1f498d14b60a5453e06616ebc6c/FLAG82b020c1c [2022-01-11 00:56:30,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d9961d67/06b5b1f498d14b60a5453e06616ebc6c [2022-01-11 00:56:30,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:56:30,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:56:30,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:56:30,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:56:30,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:56:30,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:56:30" (1/1) ... [2022-01-11 00:56:30,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170a84c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:30, skipping insertion in model container [2022-01-11 00:56:30,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:56:30" (1/1) ... [2022-01-11 00:56:30,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:56:30,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:56:31,021 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_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7752,7765] [2022-01-11 00:56:31,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:56:31,048 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:56:31,102 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_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7752,7765] [2022-01-11 00:56:31,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:56:31,130 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:56:31,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:31 WrapperNode [2022-01-11 00:56:31,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:56:31,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:56:31,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:56:31,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:56:31,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:31" (1/1) ... [2022-01-11 00:56:31,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:31" (1/1) ... [2022-01-11 00:56:31,181 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 602 [2022-01-11 00:56:31,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:56:31,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:56:31,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:56:31,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:56:31,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:31" (1/1) ... [2022-01-11 00:56:31,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:31" (1/1) ... [2022-01-11 00:56:31,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:31" (1/1) ... [2022-01-11 00:56:31,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:31" (1/1) ... [2022-01-11 00:56:31,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:31" (1/1) ... [2022-01-11 00:56:31,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:31" (1/1) ... [2022-01-11 00:56:31,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:31" (1/1) ... [2022-01-11 00:56:31,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:56:31,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:56:31,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:56:31,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:56:31,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:31" (1/1) ... [2022-01-11 00:56:31,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:56:31,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:56:31,267 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 00:56:31,268 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 00:56:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:56:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:56:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:56:31,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:56:31,426 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:56:31,427 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:56:31,868 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:56:31,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:56:31,876 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:56:31,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:56:31 BoogieIcfgContainer [2022-01-11 00:56:31,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:56:31,878 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:56:31,878 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:56:31,879 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:56:31,881 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:56:31" (1/1) ... [2022-01-11 00:56:32,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:56:32 BasicIcfg [2022-01-11 00:56:32,151 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:56:32,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:56:32,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:56:32,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:56:32,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:56:30" (1/4) ... [2022-01-11 00:56:32,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0b4fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:56:32, skipping insertion in model container [2022-01-11 00:56:32,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:31" (2/4) ... [2022-01-11 00:56:32,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0b4fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:56:32, skipping insertion in model container [2022-01-11 00:56:32,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:56:31" (3/4) ... [2022-01-11 00:56:32,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0b4fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:56:32, skipping insertion in model container [2022-01-11 00:56:32,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:56:32" (4/4) ... [2022-01-11 00:56:32,159 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 00:56:32,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:56:32,162 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:56:32,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:56:32,215 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 00:56:32,215 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:56:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7346938775510203) internal successors, (255), 148 states have internal predecessors, (255), 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 00:56:32,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 00:56:32,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:32,232 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] [2022-01-11 00:56:32,232 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:32,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1551330623, now seen corresponding path program 1 times [2022-01-11 00:56:32,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:32,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66349512] [2022-01-11 00:56:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:32,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:32,721 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 00:56:32,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:32,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66349512] [2022-01-11 00:56:32,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66349512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:32,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:32,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:32,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855182408] [2022-01-11 00:56:32,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:32,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:32,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:32,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:32,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:32,757 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7346938775510203) internal successors, (255), 148 states have internal predecessors, (255), 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 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 00:56:32,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:32,858 INFO L93 Difference]: Finished difference Result 335 states and 559 transitions. [2022-01-11 00:56:32,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:32,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2022-01-11 00:56:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:32,867 INFO L225 Difference]: With dead ends: 335 [2022-01-11 00:56:32,867 INFO L226 Difference]: Without dead ends: 231 [2022-01-11 00:56:32,869 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 00:56:32,871 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 151 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:32,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 448 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-01-11 00:56:32,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2022-01-11 00:56:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.5814977973568283) internal successors, (359), 227 states have internal predecessors, (359), 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 00:56:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 359 transitions. [2022-01-11 00:56:32,904 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 359 transitions. Word has length 56 [2022-01-11 00:56:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:32,904 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 359 transitions. [2022-01-11 00:56:32,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 00:56:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 359 transitions. [2022-01-11 00:56:32,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 00:56:32,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:32,907 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] [2022-01-11 00:56:32,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:56:32,909 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:32,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:32,909 INFO L85 PathProgramCache]: Analyzing trace with hash -949434905, now seen corresponding path program 1 times [2022-01-11 00:56:32,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:32,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139493452] [2022-01-11 00:56:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:32,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:33,027 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 00:56:33,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:33,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139493452] [2022-01-11 00:56:33,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139493452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:33,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:33,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:56:33,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672557328] [2022-01-11 00:56:33,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:33,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:56:33,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:56:33,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:56:33,031 INFO L87 Difference]: Start difference. First operand 228 states and 359 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 00:56:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:33,108 INFO L93 Difference]: Finished difference Result 641 states and 1004 transitions. [2022-01-11 00:56:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:56:33,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2022-01-11 00:56:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:33,112 INFO L225 Difference]: With dead ends: 641 [2022-01-11 00:56:33,113 INFO L226 Difference]: Without dead ends: 438 [2022-01-11 00:56:33,118 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 00:56:33,119 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 596 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:33,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 430 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-01-11 00:56:33,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 436. [2022-01-11 00:56:33,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 1.567816091954023) internal successors, (682), 435 states have internal predecessors, (682), 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 00:56:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 682 transitions. [2022-01-11 00:56:33,155 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 682 transitions. Word has length 58 [2022-01-11 00:56:33,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:33,155 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 682 transitions. [2022-01-11 00:56:33,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 00:56:33,155 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 682 transitions. [2022-01-11 00:56:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 00:56:33,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:33,162 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] [2022-01-11 00:56:33,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:56:33,163 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:33,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:33,163 INFO L85 PathProgramCache]: Analyzing trace with hash 886924206, now seen corresponding path program 1 times [2022-01-11 00:56:33,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:33,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767742507] [2022-01-11 00:56:33,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:33,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:33,292 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 00:56:33,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:33,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767742507] [2022-01-11 00:56:33,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767742507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:33,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:33,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:33,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260321817] [2022-01-11 00:56:33,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:33,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:33,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:33,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:33,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:33,294 INFO L87 Difference]: Start difference. First operand 436 states and 682 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 00:56:33,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:33,326 INFO L93 Difference]: Finished difference Result 940 states and 1512 transitions. [2022-01-11 00:56:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:33,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2022-01-11 00:56:33,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:33,328 INFO L225 Difference]: With dead ends: 940 [2022-01-11 00:56:33,328 INFO L226 Difference]: Without dead ends: 600 [2022-01-11 00:56:33,331 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 00:56:33,334 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 146 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:33,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 440 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:33,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-01-11 00:56:33,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 584. [2022-01-11 00:56:33,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 1.588336192109777) internal successors, (926), 583 states have internal predecessors, (926), 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 00:56:33,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 926 transitions. [2022-01-11 00:56:33,365 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 926 transitions. Word has length 59 [2022-01-11 00:56:33,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:33,366 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 926 transitions. [2022-01-11 00:56:33,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 00:56:33,366 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 926 transitions. [2022-01-11 00:56:33,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 00:56:33,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:33,367 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] [2022-01-11 00:56:33,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:56:33,367 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:33,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1751154026, now seen corresponding path program 1 times [2022-01-11 00:56:33,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:33,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105891109] [2022-01-11 00:56:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:33,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:33,429 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 00:56:33,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:33,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105891109] [2022-01-11 00:56:33,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105891109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:33,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:33,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:33,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787740330] [2022-01-11 00:56:33,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:33,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:33,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:33,431 INFO L87 Difference]: Start difference. First operand 584 states and 926 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 00:56:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:33,471 INFO L93 Difference]: Finished difference Result 1714 states and 2714 transitions. [2022-01-11 00:56:33,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:33,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2022-01-11 00:56:33,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:33,475 INFO L225 Difference]: With dead ends: 1714 [2022-01-11 00:56:33,475 INFO L226 Difference]: Without dead ends: 1158 [2022-01-11 00:56:33,476 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 00:56:33,480 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 216 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:33,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 658 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:33,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2022-01-11 00:56:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 586. [2022-01-11 00:56:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 1.5863247863247862) internal successors, (928), 585 states have internal predecessors, (928), 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 00:56:33,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 928 transitions. [2022-01-11 00:56:33,509 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 928 transitions. Word has length 59 [2022-01-11 00:56:33,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:33,510 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 928 transitions. [2022-01-11 00:56:33,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 00:56:33,510 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 928 transitions. [2022-01-11 00:56:33,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 00:56:33,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:33,511 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] [2022-01-11 00:56:33,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:56:33,511 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:33,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:33,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2034548126, now seen corresponding path program 1 times [2022-01-11 00:56:33,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:33,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76626013] [2022-01-11 00:56:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:33,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:33,639 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 00:56:33,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:33,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76626013] [2022-01-11 00:56:33,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76626013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:33,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:33,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:56:33,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395326852] [2022-01-11 00:56:33,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:33,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:56:33,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:33,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:56:33,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:56:33,641 INFO L87 Difference]: Start difference. First operand 586 states and 928 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 00:56:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:33,782 INFO L93 Difference]: Finished difference Result 2189 states and 3458 transitions. [2022-01-11 00:56:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:56:33,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2022-01-11 00:56:33,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:33,788 INFO L225 Difference]: With dead ends: 2189 [2022-01-11 00:56:33,788 INFO L226 Difference]: Without dead ends: 1615 [2022-01-11 00:56:33,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:56:33,789 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 594 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:33,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 929 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:33,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2022-01-11 00:56:33,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1057. [2022-01-11 00:56:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 1.566287878787879) internal successors, (1654), 1056 states have internal predecessors, (1654), 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 00:56:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1654 transitions. [2022-01-11 00:56:33,851 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1654 transitions. Word has length 60 [2022-01-11 00:56:33,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:33,853 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1654 transitions. [2022-01-11 00:56:33,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 00:56:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1654 transitions. [2022-01-11 00:56:33,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 00:56:33,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:33,860 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] [2022-01-11 00:56:33,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:56:33,860 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash -399115834, now seen corresponding path program 1 times [2022-01-11 00:56:33,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:33,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108752806] [2022-01-11 00:56:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:33,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:33,960 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 00:56:33,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:33,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108752806] [2022-01-11 00:56:33,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108752806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:33,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:33,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:33,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377883564] [2022-01-11 00:56:33,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:33,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:33,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:33,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:33,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:33,962 INFO L87 Difference]: Start difference. First operand 1057 states and 1654 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 00:56:34,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:34,106 INFO L93 Difference]: Finished difference Result 2724 states and 4358 transitions. [2022-01-11 00:56:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:34,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2022-01-11 00:56:34,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:34,112 INFO L225 Difference]: With dead ends: 2724 [2022-01-11 00:56:34,112 INFO L226 Difference]: Without dead ends: 1849 [2022-01-11 00:56:34,113 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 00:56:34,114 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 133 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:34,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 424 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:34,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2022-01-11 00:56:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1836. [2022-01-11 00:56:34,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1835 states have (on average 1.582016348773842) internal successors, (2903), 1835 states have internal predecessors, (2903), 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 00:56:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2903 transitions. [2022-01-11 00:56:34,216 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2903 transitions. Word has length 60 [2022-01-11 00:56:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:34,216 INFO L470 AbstractCegarLoop]: Abstraction has 1836 states and 2903 transitions. [2022-01-11 00:56:34,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 00:56:34,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2903 transitions. [2022-01-11 00:56:34,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 00:56:34,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:34,217 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] [2022-01-11 00:56:34,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:56:34,218 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:34,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:34,218 INFO L85 PathProgramCache]: Analyzing trace with hash -161867312, now seen corresponding path program 1 times [2022-01-11 00:56:34,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:34,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603290934] [2022-01-11 00:56:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:34,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:34,301 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 00:56:34,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:34,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603290934] [2022-01-11 00:56:34,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603290934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:34,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:34,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:56:34,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211138582] [2022-01-11 00:56:34,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:34,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:56:34,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:34,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:56:34,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:56:34,303 INFO L87 Difference]: Start difference. First operand 1836 states and 2903 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 00:56:34,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:34,551 INFO L93 Difference]: Finished difference Result 5294 states and 8359 transitions. [2022-01-11 00:56:34,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:56:34,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2022-01-11 00:56:34,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:34,561 INFO L225 Difference]: With dead ends: 5294 [2022-01-11 00:56:34,561 INFO L226 Difference]: Without dead ends: 3520 [2022-01-11 00:56:34,564 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 00:56:34,565 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 553 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:34,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 437 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2022-01-11 00:56:34,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 3518. [2022-01-11 00:56:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3518 states, 3517 states have (on average 1.5706568097810634) internal successors, (5524), 3517 states have internal predecessors, (5524), 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 00:56:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 5524 transitions. [2022-01-11 00:56:34,782 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 5524 transitions. Word has length 62 [2022-01-11 00:56:34,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:34,783 INFO L470 AbstractCegarLoop]: Abstraction has 3518 states and 5524 transitions. [2022-01-11 00:56:34,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 00:56:34,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 5524 transitions. [2022-01-11 00:56:34,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 00:56:34,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:34,785 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] [2022-01-11 00:56:34,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:56:34,785 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:34,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:34,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1530516426, now seen corresponding path program 1 times [2022-01-11 00:56:34,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:34,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100262594] [2022-01-11 00:56:34,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:34,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:34,846 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 00:56:34,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:34,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100262594] [2022-01-11 00:56:34,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100262594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:34,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:34,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:34,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11137265] [2022-01-11 00:56:34,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:34,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:34,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:34,848 INFO L87 Difference]: Start difference. First operand 3518 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 00:56:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:35,120 INFO L93 Difference]: Finished difference Result 8197 states and 13063 transitions. [2022-01-11 00:56:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:35,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-01-11 00:56:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:35,135 INFO L225 Difference]: With dead ends: 8197 [2022-01-11 00:56:35,135 INFO L226 Difference]: Without dead ends: 5009 [2022-01-11 00:56:35,139 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 00:56:35,140 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 140 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:35,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 432 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:35,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5009 states. [2022-01-11 00:56:35,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5009 to 4863. [2022-01-11 00:56:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 4862 states have (on average 1.5728095433977787) internal successors, (7647), 4862 states have internal predecessors, (7647), 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 00:56:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 7647 transitions. [2022-01-11 00:56:35,450 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 7647 transitions. Word has length 63 [2022-01-11 00:56:35,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:35,450 INFO L470 AbstractCegarLoop]: Abstraction has 4863 states and 7647 transitions. [2022-01-11 00:56:35,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 00:56:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 7647 transitions. [2022-01-11 00:56:35,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 00:56:35,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:35,452 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] [2022-01-11 00:56:35,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:56:35,453 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash 640135839, now seen corresponding path program 1 times [2022-01-11 00:56:35,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:35,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097342880] [2022-01-11 00:56:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:35,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:35,492 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 00:56:35,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:35,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097342880] [2022-01-11 00:56:35,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097342880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:35,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:35,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:35,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348983092] [2022-01-11 00:56:35,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:35,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:35,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:35,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:35,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:35,493 INFO L87 Difference]: Start difference. First operand 4863 states and 7647 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 00:56:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:35,986 INFO L93 Difference]: Finished difference Result 14465 states and 22739 transitions. [2022-01-11 00:56:35,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:35,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-01-11 00:56:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:36,014 INFO L225 Difference]: With dead ends: 14465 [2022-01-11 00:56:36,014 INFO L226 Difference]: Without dead ends: 9676 [2022-01-11 00:56:36,021 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 00:56:36,021 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 202 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:36,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 644 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:36,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9676 states. [2022-01-11 00:56:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9676 to 4871. [2022-01-11 00:56:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4871 states, 4870 states have (on average 1.5718685831622177) internal successors, (7655), 4870 states have internal predecessors, (7655), 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 00:56:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4871 states to 4871 states and 7655 transitions. [2022-01-11 00:56:36,410 INFO L78 Accepts]: Start accepts. Automaton has 4871 states and 7655 transitions. Word has length 63 [2022-01-11 00:56:36,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:36,411 INFO L470 AbstractCegarLoop]: Abstraction has 4871 states and 7655 transitions. [2022-01-11 00:56:36,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 00:56:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4871 states and 7655 transitions. [2022-01-11 00:56:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 00:56:36,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:36,413 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] [2022-01-11 00:56:36,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:56:36,414 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:36,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:36,414 INFO L85 PathProgramCache]: Analyzing trace with hash -340327157, now seen corresponding path program 1 times [2022-01-11 00:56:36,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:36,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812451454] [2022-01-11 00:56:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:36,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:36,502 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 00:56:36,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:36,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812451454] [2022-01-11 00:56:36,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812451454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:36,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:36,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:56:36,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914960358] [2022-01-11 00:56:36,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:36,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:56:36,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:36,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:56:36,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:56:36,503 INFO L87 Difference]: Start difference. First operand 4871 states and 7655 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 00:56:37,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:37,267 INFO L93 Difference]: Finished difference Result 18183 states and 28617 transitions. [2022-01-11 00:56:37,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:56:37,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2022-01-11 00:56:37,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:37,294 INFO L225 Difference]: With dead ends: 18183 [2022-01-11 00:56:37,294 INFO L226 Difference]: Without dead ends: 13370 [2022-01-11 00:56:37,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:56:37,301 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 578 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:37,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 913 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13370 states. [2022-01-11 00:56:37,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13370 to 8733. [2022-01-11 00:56:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8733 states, 8732 states have (on average 1.5527943197434724) internal successors, (13559), 8732 states have internal predecessors, (13559), 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 00:56:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8733 states to 8733 states and 13559 transitions. [2022-01-11 00:56:37,961 INFO L78 Accepts]: Start accepts. Automaton has 8733 states and 13559 transitions. Word has length 64 [2022-01-11 00:56:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:37,962 INFO L470 AbstractCegarLoop]: Abstraction has 8733 states and 13559 transitions. [2022-01-11 00:56:37,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 00:56:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 8733 states and 13559 transitions. [2022-01-11 00:56:37,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 00:56:37,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:37,965 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] [2022-01-11 00:56:37,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:56:37,966 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:37,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash -629127825, now seen corresponding path program 1 times [2022-01-11 00:56:37,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:37,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174140479] [2022-01-11 00:56:37,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:37,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:38,071 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 00:56:38,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:38,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174140479] [2022-01-11 00:56:38,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174140479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:38,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:38,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:38,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346362884] [2022-01-11 00:56:38,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:38,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:38,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:38,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:38,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:38,073 INFO L87 Difference]: Start difference. First operand 8733 states and 13559 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 00:56:39,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:39,141 INFO L93 Difference]: Finished difference Result 24101 states and 37857 transitions. [2022-01-11 00:56:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:39,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-01-11 00:56:39,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:39,169 INFO L225 Difference]: With dead ends: 24101 [2022-01-11 00:56:39,169 INFO L226 Difference]: Without dead ends: 15988 [2022-01-11 00:56:39,178 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 00:56:39,179 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 127 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:39,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 425 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:39,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15988 states. [2022-01-11 00:56:40,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15988 to 15865. [2022-01-11 00:56:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15865 states, 15864 states have (on average 1.5552824004034291) internal successors, (24673), 15864 states have internal predecessors, (24673), 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 00:56:40,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15865 states to 15865 states and 24673 transitions. [2022-01-11 00:56:40,205 INFO L78 Accepts]: Start accepts. Automaton has 15865 states and 24673 transitions. Word has length 64 [2022-01-11 00:56:40,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:40,205 INFO L470 AbstractCegarLoop]: Abstraction has 15865 states and 24673 transitions. [2022-01-11 00:56:40,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 00:56:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 15865 states and 24673 transitions. [2022-01-11 00:56:40,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 00:56:40,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:40,209 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] [2022-01-11 00:56:40,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:56:40,210 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:40,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:40,210 INFO L85 PathProgramCache]: Analyzing trace with hash -445501479, now seen corresponding path program 1 times [2022-01-11 00:56:40,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:40,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499154570] [2022-01-11 00:56:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:40,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:40,269 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 00:56:40,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:40,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499154570] [2022-01-11 00:56:40,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499154570] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:40,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:40,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:56:40,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253664780] [2022-01-11 00:56:40,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:40,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:56:40,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:40,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:56:40,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:56:40,271 INFO L87 Difference]: Start difference. First operand 15865 states and 24673 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 00:56:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:42,629 INFO L93 Difference]: Finished difference Result 45993 states and 71429 transitions. [2022-01-11 00:56:42,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:56:42,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-01-11 00:56:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:42,689 INFO L225 Difference]: With dead ends: 45993 [2022-01-11 00:56:42,689 INFO L226 Difference]: Without dead ends: 30292 [2022-01-11 00:56:42,710 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 00:56:42,711 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 520 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:42,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 440 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30292 states. [2022-01-11 00:56:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30292 to 30290. [2022-01-11 00:56:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30290 states, 30289 states have (on average 1.5404932483739973) internal successors, (46660), 30289 states have internal predecessors, (46660), 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 00:56:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30290 states to 30290 states and 46660 transitions. [2022-01-11 00:56:44,960 INFO L78 Accepts]: Start accepts. Automaton has 30290 states and 46660 transitions. Word has length 66 [2022-01-11 00:56:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:44,960 INFO L470 AbstractCegarLoop]: Abstraction has 30290 states and 46660 transitions. [2022-01-11 00:56:44,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 00:56:44,960 INFO L276 IsEmpty]: Start isEmpty. Operand 30290 states and 46660 transitions. [2022-01-11 00:56:44,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 00:56:44,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:44,969 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] [2022-01-11 00:56:44,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:56:44,969 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:44,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:44,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1651767742, now seen corresponding path program 1 times [2022-01-11 00:56:44,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:44,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586549820] [2022-01-11 00:56:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:44,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:45,020 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 00:56:45,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:45,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586549820] [2022-01-11 00:56:45,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586549820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:45,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:45,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:45,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840875298] [2022-01-11 00:56:45,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:45,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:45,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:45,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:45,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:45,021 INFO L87 Difference]: Start difference. First operand 30290 states and 46660 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 00:56:48,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:48,190 INFO L93 Difference]: Finished difference Result 72877 states and 113115 transitions. [2022-01-11 00:56:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:48,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-11 00:56:48,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:48,270 INFO L225 Difference]: With dead ends: 72877 [2022-01-11 00:56:48,270 INFO L226 Difference]: Without dead ends: 43687 [2022-01-11 00:56:48,305 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 00:56:48,306 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 134 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:48,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 433 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:48,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43687 states. [2022-01-11 00:56:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43687 to 42211. [2022-01-11 00:56:51,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42211 states, 42210 states have (on average 1.534304667140488) internal successors, (64763), 42210 states have internal predecessors, (64763), 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 00:56:51,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42211 states to 42211 states and 64763 transitions. [2022-01-11 00:56:51,758 INFO L78 Accepts]: Start accepts. Automaton has 42211 states and 64763 transitions. Word has length 67 [2022-01-11 00:56:51,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:51,758 INFO L470 AbstractCegarLoop]: Abstraction has 42211 states and 64763 transitions. [2022-01-11 00:56:51,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 00:56:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 42211 states and 64763 transitions. [2022-01-11 00:56:51,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 00:56:51,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:51,766 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] [2022-01-11 00:56:51,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:56:51,767 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:51,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:51,767 INFO L85 PathProgramCache]: Analyzing trace with hash -548799288, now seen corresponding path program 1 times [2022-01-11 00:56:51,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:51,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627874044] [2022-01-11 00:56:51,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:51,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:51,800 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 00:56:51,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:51,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627874044] [2022-01-11 00:56:51,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627874044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:51,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:51,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:51,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737705627] [2022-01-11 00:56:51,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:51,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:51,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:51,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:51,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:51,801 INFO L87 Difference]: Start difference. First operand 42211 states and 64763 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 00:56:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:57,604 INFO L93 Difference]: Finished difference Result 125713 states and 193115 transitions. [2022-01-11 00:56:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:57,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-11 00:56:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:57,761 INFO L225 Difference]: With dead ends: 125713 [2022-01-11 00:56:57,761 INFO L226 Difference]: Without dead ends: 84186 [2022-01-11 00:56:57,802 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 00:56:57,803 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 188 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:57,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 630 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84186 states. [2022-01-11 00:57:01,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84186 to 42243. [2022-01-11 00:57:01,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42243 states, 42242 states have (on average 1.5338999100421382) internal successors, (64795), 42242 states have internal predecessors, (64795), 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 00:57:01,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42243 states to 42243 states and 64795 transitions. [2022-01-11 00:57:01,709 INFO L78 Accepts]: Start accepts. Automaton has 42243 states and 64795 transitions. Word has length 67 [2022-01-11 00:57:01,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:57:01,709 INFO L470 AbstractCegarLoop]: Abstraction has 42243 states and 64795 transitions. [2022-01-11 00:57:01,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 00:57:01,709 INFO L276 IsEmpty]: Start isEmpty. Operand 42243 states and 64795 transitions. [2022-01-11 00:57:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 00:57:01,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:57:01,716 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] [2022-01-11 00:57:01,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:57:01,717 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:57:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:57:01,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1118251981, now seen corresponding path program 1 times [2022-01-11 00:57:01,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:57:01,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791213474] [2022-01-11 00:57:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:57:01,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:57:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:57:01,781 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 00:57:01,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:57:01,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791213474] [2022-01-11 00:57:01,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791213474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:57:01,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:57:01,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:57:01,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113694519] [2022-01-11 00:57:01,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:57:01,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:57:01,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:57:01,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:57:01,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:57:01,782 INFO L87 Difference]: Start difference. First operand 42243 states and 64795 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 00:57:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:57:11,520 INFO L93 Difference]: Finished difference Result 159004 states and 244094 transitions. [2022-01-11 00:57:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:57:11,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2022-01-11 00:57:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:57:11,731 INFO L225 Difference]: With dead ends: 159004 [2022-01-11 00:57:11,731 INFO L226 Difference]: Without dead ends: 117029 [2022-01-11 00:57:11,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:57:11,779 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 709 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:57:11,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 683 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:57:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117029 states. [2022-01-11 00:57:18,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117029 to 75604. [2022-01-11 00:57:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75604 states, 75603 states have (on average 1.5188682988770288) internal successors, (114831), 75603 states have internal predecessors, (114831), 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 00:57:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75604 states to 75604 states and 114831 transitions. [2022-01-11 00:57:19,133 INFO L78 Accepts]: Start accepts. Automaton has 75604 states and 114831 transitions. Word has length 68 [2022-01-11 00:57:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:57:19,133 INFO L470 AbstractCegarLoop]: Abstraction has 75604 states and 114831 transitions. [2022-01-11 00:57:19,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 00:57:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 75604 states and 114831 transitions. [2022-01-11 00:57:19,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 00:57:19,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:57:19,147 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] [2022-01-11 00:57:19,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:57:19,147 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:57:19,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:57:19,147 INFO L85 PathProgramCache]: Analyzing trace with hash -274316488, now seen corresponding path program 1 times [2022-01-11 00:57:19,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:57:19,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062019398] [2022-01-11 00:57:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:57:19,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:57:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:57:19,290 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 00:57:19,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:57:19,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062019398] [2022-01-11 00:57:19,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062019398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:57:19,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:57:19,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:57:19,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231440196] [2022-01-11 00:57:19,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:57:19,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:57:19,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:57:19,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:57:19,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:57:19,292 INFO L87 Difference]: Start difference. First operand 75604 states and 114831 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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)