/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_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:44:26,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:44:26,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:44:26,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:44:26,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:44:26,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:44:26,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:44:26,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:44:26,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:44:26,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:44:26,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:44:26,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:44:26,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:44:26,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:44:26,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:44:26,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:44:26,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:44:26,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:44:26,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:44:26,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:44:26,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:44:26,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:44:26,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:44:26,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:44:26,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:44:26,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:44:26,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:44:26,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:44:26,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:44:26,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-11 00:44:26,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:44:26,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:44:26,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:44:26,428 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 00:44:26,444 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:44:26,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:44:26,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:44:26,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:44:26,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:44:26,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:44:26,445 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:44:26,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:44:26,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:44:26,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:44:26,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:44:26,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:44:26,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:44:26,446 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:44:26,446 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:44:26,447 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:44:26,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:44:26,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:44:26,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:44:26,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:44:26,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:44:26,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:44:26,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:44:26,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:44:26,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:44:26,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:44:26,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:44:26,448 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:44:26,449 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:44:26,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:44:26,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:44:26,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:44:26,450 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:44:26,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:44:26,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:44:26,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:44:26,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:44:26,632 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:44:26,633 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:44:26,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 00:44:26,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcb77324/71016f2d2604479d9d172016c96f5827/FLAGcc7ec846f [2022-01-11 00:44:27,026 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:44:27,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 00:44:27,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcb77324/71016f2d2604479d9d172016c96f5827/FLAGcc7ec846f [2022-01-11 00:44:27,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcb77324/71016f2d2604479d9d172016c96f5827 [2022-01-11 00:44:27,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:44:27,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:44:27,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:44:27,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:44:27,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:44:27,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:44:27" (1/1) ... [2022-01-11 00:44:27,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f705418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27, skipping insertion in model container [2022-01-11 00:44:27,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:44:27" (1/1) ... [2022-01-11 00:44:27,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:44:27,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:44:27,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5377,5390] [2022-01-11 00:44:27,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:44:27,694 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:44:27,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5377,5390] [2022-01-11 00:44:27,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:44:27,735 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:44:27,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27 WrapperNode [2022-01-11 00:44:27,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:44:27,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:44:27,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:44:27,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:44:27,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27" (1/1) ... [2022-01-11 00:44:27,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27" (1/1) ... [2022-01-11 00:44:27,772 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 398 [2022-01-11 00:44:27,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:44:27,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:44:27,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:44:27,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:44:27,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27" (1/1) ... [2022-01-11 00:44:27,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27" (1/1) ... [2022-01-11 00:44:27,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27" (1/1) ... [2022-01-11 00:44:27,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27" (1/1) ... [2022-01-11 00:44:27,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27" (1/1) ... [2022-01-11 00:44:27,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27" (1/1) ... [2022-01-11 00:44:27,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27" (1/1) ... [2022-01-11 00:44:27,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:44:27,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:44:27,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:44:27,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:44:27,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27" (1/1) ... [2022-01-11 00:44:27,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:44:27,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:44:27,885 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 00:44:27,931 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 00:44:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:44:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:44:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:44:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:44:28,022 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:44:28,024 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:44:28,336 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:44:28,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:44:28,342 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:44:28,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:44:28 BoogieIcfgContainer [2022-01-11 00:44:28,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:44:28,356 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:44:28,356 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:44:28,357 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:44:28,360 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:44:28" (1/1) ... [2022-01-11 00:44:28,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:44:28 BasicIcfg [2022-01-11 00:44:28,722 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:44:28,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:44:28,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:44:28,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:44:28,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:44:27" (1/4) ... [2022-01-11 00:44:28,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6a1988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:44:28, skipping insertion in model container [2022-01-11 00:44:28,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:44:27" (2/4) ... [2022-01-11 00:44:28,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6a1988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:44:28, skipping insertion in model container [2022-01-11 00:44:28,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:44:28" (3/4) ... [2022-01-11 00:44:28,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6a1988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:44:28, skipping insertion in model container [2022-01-11 00:44:28,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:44:28" (4/4) ... [2022-01-11 00:44:28,732 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 00:44:28,743 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:44:28,743 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:44:28,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:44:28,796 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 00:44:28,796 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:44:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 105 states have (on average 1.6857142857142857) internal successors, (177), 106 states have internal predecessors, (177), 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 00:44:28,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-11 00:44:28,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:28,824 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] [2022-01-11 00:44:28,824 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:44:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:28,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1358638104, now seen corresponding path program 1 times [2022-01-11 00:44:28,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:28,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4692311] [2022-01-11 00:44:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:28,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:29,258 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 00:44:29,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:29,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4692311] [2022-01-11 00:44:29,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4692311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:44:29,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:44:29,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:44:29,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130875617] [2022-01-11 00:44:29,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:44:29,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:44:29,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:44:29,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:44:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:44:29,286 INFO L87 Difference]: Start difference. First operand has 107 states, 105 states have (on average 1.6857142857142857) internal successors, (177), 106 states have internal predecessors, (177), 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 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 00:44:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:44:29,343 INFO L93 Difference]: Finished difference Result 251 states and 401 transitions. [2022-01-11 00:44:29,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:44:29,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-01-11 00:44:29,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:44:29,356 INFO L225 Difference]: With dead ends: 251 [2022-01-11 00:44:29,357 INFO L226 Difference]: Without dead ends: 165 [2022-01-11 00:44:29,359 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 00:44:29,366 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 123 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:44:29,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 368 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:44:29,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-01-11 00:44:29,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2022-01-11 00:44:29,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5) internal successors, (243), 162 states have internal predecessors, (243), 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 00:44:29,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 243 transitions. [2022-01-11 00:44:29,440 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 243 transitions. Word has length 48 [2022-01-11 00:44:29,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:44:29,441 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 243 transitions. [2022-01-11 00:44:29,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 00:44:29,441 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 243 transitions. [2022-01-11 00:44:29,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-11 00:44:29,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:29,443 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] [2022-01-11 00:44:29,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:44:29,443 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:44:29,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:29,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2039198546, now seen corresponding path program 1 times [2022-01-11 00:44:29,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:29,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825923212] [2022-01-11 00:44:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:29,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:29,563 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 00:44:29,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:29,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825923212] [2022-01-11 00:44:29,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825923212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:44:29,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:44:29,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:44:29,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651229666] [2022-01-11 00:44:29,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:44:29,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:44:29,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:44:29,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:44:29,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:44:29,568 INFO L87 Difference]: Start difference. First operand 163 states and 243 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 00:44:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:44:29,592 INFO L93 Difference]: Finished difference Result 403 states and 623 transitions. [2022-01-11 00:44:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:44:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2022-01-11 00:44:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:44:29,594 INFO L225 Difference]: With dead ends: 403 [2022-01-11 00:44:29,594 INFO L226 Difference]: Without dead ends: 267 [2022-01-11 00:44:29,595 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 00:44:29,596 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 101 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:44:29,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 313 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:44:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-01-11 00:44:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2022-01-11 00:44:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.5303030303030303) internal successors, (404), 264 states have internal predecessors, (404), 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 00:44:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 404 transitions. [2022-01-11 00:44:29,610 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 404 transitions. Word has length 49 [2022-01-11 00:44:29,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:44:29,610 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 404 transitions. [2022-01-11 00:44:29,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 00:44:29,611 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 404 transitions. [2022-01-11 00:44:29,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-11 00:44:29,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:29,612 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] [2022-01-11 00:44:29,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:44:29,612 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:44:29,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1805967961, now seen corresponding path program 1 times [2022-01-11 00:44:29,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:29,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59009494] [2022-01-11 00:44:29,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:29,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:29,677 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 00:44:29,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:29,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59009494] [2022-01-11 00:44:29,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59009494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:44:29,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:44:29,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:44:29,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619164317] [2022-01-11 00:44:29,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:44:29,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:44:29,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:44:29,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:44:29,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:44:29,679 INFO L87 Difference]: Start difference. First operand 265 states and 404 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 00:44:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:44:29,693 INFO L93 Difference]: Finished difference Result 677 states and 1054 transitions. [2022-01-11 00:44:29,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:44:29,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2022-01-11 00:44:29,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:44:29,696 INFO L225 Difference]: With dead ends: 677 [2022-01-11 00:44:29,696 INFO L226 Difference]: Without dead ends: 439 [2022-01-11 00:44:29,696 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 00:44:29,697 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 96 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:44:29,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 298 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:44:29,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-01-11 00:44:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2022-01-11 00:44:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.5412844036697249) internal successors, (672), 436 states have internal predecessors, (672), 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 00:44:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 672 transitions. [2022-01-11 00:44:29,715 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 672 transitions. Word has length 50 [2022-01-11 00:44:29,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:44:29,716 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 672 transitions. [2022-01-11 00:44:29,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 00:44:29,716 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 672 transitions. [2022-01-11 00:44:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 00:44:29,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:29,717 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] [2022-01-11 00:44:29,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:44:29,717 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:44:29,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:29,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1245973427, now seen corresponding path program 1 times [2022-01-11 00:44:29,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:29,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131314444] [2022-01-11 00:44:29,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:29,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:29,850 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 00:44:29,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:29,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131314444] [2022-01-11 00:44:29,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131314444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:44:29,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:44:29,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:44:29,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652478151] [2022-01-11 00:44:29,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:44:29,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:44:29,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:44:29,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:44:29,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:44:29,853 INFO L87 Difference]: Start difference. First operand 437 states and 672 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 00:44:30,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:44:30,355 INFO L93 Difference]: Finished difference Result 2909 states and 4549 transitions. [2022-01-11 00:44:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:44:30,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 51 [2022-01-11 00:44:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:44:30,365 INFO L225 Difference]: With dead ends: 2909 [2022-01-11 00:44:30,365 INFO L226 Difference]: Without dead ends: 2499 [2022-01-11 00:44:30,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-11 00:44:30,374 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 797 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:44:30,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 1137 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:44:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2022-01-11 00:44:30,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 1529. [2022-01-11 00:44:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 1.557591623036649) internal successors, (2380), 1528 states have internal predecessors, (2380), 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 00:44:30,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 2380 transitions. [2022-01-11 00:44:30,564 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 2380 transitions. Word has length 51 [2022-01-11 00:44:30,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:44:30,565 INFO L470 AbstractCegarLoop]: Abstraction has 1529 states and 2380 transitions. [2022-01-11 00:44:30,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 00:44:30,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 2380 transitions. [2022-01-11 00:44:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 00:44:30,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:30,570 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] [2022-01-11 00:44:30,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:44:30,570 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:44:30,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:30,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1361514681, now seen corresponding path program 1 times [2022-01-11 00:44:30,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:30,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137654492] [2022-01-11 00:44:30,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:30,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:30,716 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 00:44:30,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:30,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137654492] [2022-01-11 00:44:30,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137654492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:44:30,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:44:30,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:44:30,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848771835] [2022-01-11 00:44:30,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:44:30,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:44:30,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:44:30,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:44:30,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:44:30,718 INFO L87 Difference]: Start difference. First operand 1529 states and 2380 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 00:44:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:44:30,977 INFO L93 Difference]: Finished difference Result 4117 states and 6414 transitions. [2022-01-11 00:44:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:44:30,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2022-01-11 00:44:30,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:44:30,987 INFO L225 Difference]: With dead ends: 4117 [2022-01-11 00:44:30,987 INFO L226 Difference]: Without dead ends: 2615 [2022-01-11 00:44:30,989 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 00:44:30,991 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 107 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:44:30,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 361 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:44:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2022-01-11 00:44:31,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2613. [2022-01-11 00:44:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2612 states have (on average 1.542113323124043) internal successors, (4028), 2612 states have internal predecessors, (4028), 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 00:44:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 4028 transitions. [2022-01-11 00:44:31,317 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 4028 transitions. Word has length 53 [2022-01-11 00:44:31,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:44:31,318 INFO L470 AbstractCegarLoop]: Abstraction has 2613 states and 4028 transitions. [2022-01-11 00:44:31,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 00:44:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 4028 transitions. [2022-01-11 00:44:31,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 00:44:31,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:31,324 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] [2022-01-11 00:44:31,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:44:31,325 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:44:31,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:31,325 INFO L85 PathProgramCache]: Analyzing trace with hash -462025765, now seen corresponding path program 1 times [2022-01-11 00:44:31,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:31,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242400689] [2022-01-11 00:44:31,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:31,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:31,626 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 00:44:31,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:31,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242400689] [2022-01-11 00:44:31,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242400689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:44:31,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:44:31,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:44:31,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551222241] [2022-01-11 00:44:31,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:44:31,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:44:31,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:44:31,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:44:31,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:44:31,628 INFO L87 Difference]: Start difference. First operand 2613 states and 4028 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 00:44:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:44:33,596 INFO L93 Difference]: Finished difference Result 13631 states and 21065 transitions. [2022-01-11 00:44:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:44:33,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2022-01-11 00:44:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:44:33,627 INFO L225 Difference]: With dead ends: 13631 [2022-01-11 00:44:33,627 INFO L226 Difference]: Without dead ends: 11045 [2022-01-11 00:44:33,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:44:33,632 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 858 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:44:33,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 1030 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:44:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11045 states. [2022-01-11 00:44:35,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11045 to 5197. [2022-01-11 00:44:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 1.5204003079291764) internal successors, (7900), 5196 states have internal predecessors, (7900), 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 00:44:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7900 transitions. [2022-01-11 00:44:35,181 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7900 transitions. Word has length 53 [2022-01-11 00:44:35,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:44:35,181 INFO L470 AbstractCegarLoop]: Abstraction has 5197 states and 7900 transitions. [2022-01-11 00:44:35,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 00:44:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7900 transitions. [2022-01-11 00:44:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 00:44:35,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:35,182 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] [2022-01-11 00:44:35,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:44:35,182 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:44:35,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:35,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1438883240, now seen corresponding path program 1 times [2022-01-11 00:44:35,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:35,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802825163] [2022-01-11 00:44:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:35,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:35,250 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 00:44:35,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:35,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802825163] [2022-01-11 00:44:35,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802825163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:44:35,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:44:35,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:44:35,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951893791] [2022-01-11 00:44:35,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:44:35,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:44:35,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:44:35,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:44:35,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:44:35,252 INFO L87 Difference]: Start difference. First operand 5197 states and 7900 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:44:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:44:37,775 INFO L93 Difference]: Finished difference Result 10118 states and 15319 transitions. [2022-01-11 00:44:37,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:44:37,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2022-01-11 00:44:37,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:44:37,802 INFO L225 Difference]: With dead ends: 10118 [2022-01-11 00:44:37,802 INFO L226 Difference]: Without dead ends: 10116 [2022-01-11 00:44:37,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:44:37,804 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 344 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:44:37,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 532 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:44:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2022-01-11 00:44:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 5453. [2022-01-11 00:44:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5453 states, 5452 states have (on average 1.495964783565664) internal successors, (8156), 5452 states have internal predecessors, (8156), 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 00:44:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 8156 transitions. [2022-01-11 00:44:39,263 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 8156 transitions. Word has length 54 [2022-01-11 00:44:39,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:44:39,264 INFO L470 AbstractCegarLoop]: Abstraction has 5453 states and 8156 transitions. [2022-01-11 00:44:39,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:44:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 8156 transitions. [2022-01-11 00:44:39,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 00:44:39,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:39,264 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] [2022-01-11 00:44:39,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:44:39,265 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:44:39,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:39,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1654697896, now seen corresponding path program 1 times [2022-01-11 00:44:39,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:39,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319284947] [2022-01-11 00:44:39,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:39,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:39,330 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 00:44:39,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:39,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319284947] [2022-01-11 00:44:39,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319284947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:44:39,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:44:39,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:44:39,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297641977] [2022-01-11 00:44:39,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:44:39,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:44:39,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:44:39,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:44:39,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:44:39,331 INFO L87 Difference]: Start difference. First operand 5453 states and 8156 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 00:44:41,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:44:41,422 INFO L93 Difference]: Finished difference Result 13563 states and 20288 transitions. [2022-01-11 00:44:41,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:44:41,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2022-01-11 00:44:41,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:44:41,444 INFO L225 Difference]: With dead ends: 13563 [2022-01-11 00:44:41,444 INFO L226 Difference]: Without dead ends: 8137 [2022-01-11 00:44:41,450 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 00:44:41,450 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 85 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:44:41,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 263 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:44:41,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8137 states. [2022-01-11 00:44:43,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8137 to 8071. [2022-01-11 00:44:43,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8071 states, 8070 states have (on average 1.4827757125154895) internal successors, (11966), 8070 states have internal predecessors, (11966), 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 00:44:43,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8071 states to 8071 states and 11966 transitions. [2022-01-11 00:44:43,503 INFO L78 Accepts]: Start accepts. Automaton has 8071 states and 11966 transitions. Word has length 55 [2022-01-11 00:44:43,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:44:43,503 INFO L470 AbstractCegarLoop]: Abstraction has 8071 states and 11966 transitions. [2022-01-11 00:44:43,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 00:44:43,504 INFO L276 IsEmpty]: Start isEmpty. Operand 8071 states and 11966 transitions. [2022-01-11 00:44:43,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:44:43,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:43,508 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:44:43,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:44:43,509 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:44:43,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:43,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1770675714, now seen corresponding path program 1 times [2022-01-11 00:44:43,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:43,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538846003] [2022-01-11 00:44:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:43,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:44:43,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:43,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538846003] [2022-01-11 00:44:43,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538846003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:44:43,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:44:43,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:44:43,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973685444] [2022-01-11 00:44:43,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:44:43,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:44:43,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:44:43,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:44:43,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:44:43,622 INFO L87 Difference]: Start difference. First operand 8071 states and 11966 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 00:44:45,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:44:45,063 INFO L93 Difference]: Finished difference Result 13640 states and 20288 transitions. [2022-01-11 00:44:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:44:45,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2022-01-11 00:44:45,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:44:45,081 INFO L225 Difference]: With dead ends: 13640 [2022-01-11 00:44:45,081 INFO L226 Difference]: Without dead ends: 5598 [2022-01-11 00:44:45,088 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 00:44:45,089 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 88 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:44:45,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 316 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:44:45,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5598 states. [2022-01-11 00:44:46,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5598 to 5596. [2022-01-11 00:44:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5595 states have (on average 1.4802502234137622) internal successors, (8282), 5595 states have internal predecessors, (8282), 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 00:44:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 8282 transitions. [2022-01-11 00:44:46,461 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 8282 transitions. Word has length 77 [2022-01-11 00:44:46,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:44:46,462 INFO L470 AbstractCegarLoop]: Abstraction has 5596 states and 8282 transitions. [2022-01-11 00:44:46,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 00:44:46,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 8282 transitions. [2022-01-11 00:44:46,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:44:46,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:46,464 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:44:46,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:44:46,464 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:44:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash 207444561, now seen corresponding path program 1 times [2022-01-11 00:44:46,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:46,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205517446] [2022-01-11 00:44:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:46,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:44:46,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:46,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205517446] [2022-01-11 00:44:46,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205517446] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:44:46,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301144305] [2022-01-11 00:44:46,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:46,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:44:46,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:44:46,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:44:46,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 00:44:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:46,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-11 00:44:46,944 INFO L286 TraceCheckSpWp]: Computing forward predicates...