/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_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:06:50,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:06:50,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:06:50,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:06:50,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:06:50,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:06:50,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:06:50,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:06:50,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:06:50,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:06:50,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:06:50,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:06:50,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:06:50,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:06:50,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:06:50,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:06:50,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:06:50,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:06:50,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:06:50,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:06:50,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:06:50,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:06:50,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:06:50,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:06:50,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:06:50,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:06:50,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:06:50,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:06:50,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:06:50,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:06:50,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:06:50,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:06:50,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:06:50,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:06:50,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:06:50,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:06:50,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:06:50,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:06:50,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:06:50,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:06:50,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:06:50,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:06:50,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:06:50,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:06:50,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:06:50,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:06:50,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:06:50,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:06:50,648 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:06:50,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:06:50,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:06:50,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:06:50,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:06:50,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:06:50,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:06:50,649 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:06:50,649 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:06:50,649 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:06:50,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:06:50,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:06:50,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:06:50,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:06:50,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:06:50,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:06:50,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:06:50,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:06:50,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:06:50,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:06:50,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:06:50,650 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:06:50,651 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:06:50,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:06:50,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:06:50,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:06:50,652 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:06:50,652 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:06:50,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:06:50,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:06:50,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:06:50,871 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:06:50,871 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:06:50,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-01-10 13:06:50,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a54ed52d0/b1eaa98923f34e04a457747513e4dcee/FLAGbd65e0b52 [2022-01-10 13:06:51,336 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:06:51,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-01-10 13:06:51,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a54ed52d0/b1eaa98923f34e04a457747513e4dcee/FLAGbd65e0b52 [2022-01-10 13:06:51,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a54ed52d0/b1eaa98923f34e04a457747513e4dcee [2022-01-10 13:06:51,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:06:51,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:06:51,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:06:51,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:06:51,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:06:51,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:06:51" (1/1) ... [2022-01-10 13:06:51,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59bba6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51, skipping insertion in model container [2022-01-10 13:06:51,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:06:51" (1/1) ... [2022-01-10 13:06:51,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:06:51,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:06:51,633 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.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[11101,11114] [2022-01-10 13:06:51,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:06:51,691 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:06:51,736 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.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[11101,11114] [2022-01-10 13:06:51,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:06:51,781 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:06:51,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51 WrapperNode [2022-01-10 13:06:51,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:06:51,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:06:51,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:06:51,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:06:51,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51" (1/1) ... [2022-01-10 13:06:51,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51" (1/1) ... [2022-01-10 13:06:51,862 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1091 [2022-01-10 13:06:51,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:06:51,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:06:51,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:06:51,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:06:51,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51" (1/1) ... [2022-01-10 13:06:51,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51" (1/1) ... [2022-01-10 13:06:51,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51" (1/1) ... [2022-01-10 13:06:51,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51" (1/1) ... [2022-01-10 13:06:51,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51" (1/1) ... [2022-01-10 13:06:51,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51" (1/1) ... [2022-01-10 13:06:51,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51" (1/1) ... [2022-01-10 13:06:51,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:06:51,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:06:51,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:06:51,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:06:51,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51" (1/1) ... [2022-01-10 13:06:51,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:06:51,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:06:51,975 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) [2022-01-10 13:06:51,976 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 [2022-01-10 13:06:52,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:06:52,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:06:52,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:06:52,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:06:52,100 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:06:52,101 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:06:52,728 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:06:52,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:06:52,741 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:06:52,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:06:52 BoogieIcfgContainer [2022-01-10 13:06:52,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:06:52,745 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:06:52,745 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:06:52,746 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:06:52,748 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:06:52" (1/1) ... [2022-01-10 13:06:53,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:06:53 BasicIcfg [2022-01-10 13:06:53,340 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:06:53,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:06:53,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:06:53,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:06:53,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:06:51" (1/4) ... [2022-01-10 13:06:53,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132fd989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:06:53, skipping insertion in model container [2022-01-10 13:06:53,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:51" (2/4) ... [2022-01-10 13:06:53,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132fd989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:06:53, skipping insertion in model container [2022-01-10 13:06:53,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:06:52" (3/4) ... [2022-01-10 13:06:53,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132fd989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:06:53, skipping insertion in model container [2022-01-10 13:06:53,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:06:53" (4/4) ... [2022-01-10 13:06:53,345 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.cTransformedIcfg [2022-01-10 13:06:53,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:06:53,348 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:06:53,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:06:53,381 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 [2022-01-10 13:06:53,381 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:06:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 328 states have (on average 1.6524390243902438) internal successors, (542), 329 states have internal predecessors, (542), 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) [2022-01-10 13:06:53,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 13:06:53,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:53,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:53,410 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:53,414 INFO L85 PathProgramCache]: Analyzing trace with hash -879663746, now seen corresponding path program 1 times [2022-01-10 13:06:53,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:53,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929452914] [2022-01-10 13:06:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:53,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:53,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:53,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929452914] [2022-01-10 13:06:53,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929452914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:53,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:53,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:06:53,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763477887] [2022-01-10 13:06:53,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:53,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:06:53,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:53,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:06:53,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:06:53,846 INFO L87 Difference]: Start difference. First operand has 330 states, 328 states have (on average 1.6524390243902438) internal successors, (542), 329 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:53,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:53,954 INFO L93 Difference]: Finished difference Result 859 states and 1392 transitions. [2022-01-10 13:06:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:06:53,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 13:06:53,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:53,970 INFO L225 Difference]: With dead ends: 859 [2022-01-10 13:06:53,970 INFO L226 Difference]: Without dead ends: 572 [2022-01-10 13:06:53,973 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 [2022-01-10 13:06:53,974 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 472 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:53,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 971 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:06:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-01-10 13:06:54,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 570. [2022-01-10 13:06:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.6133567662565904) internal successors, (918), 569 states have internal predecessors, (918), 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) [2022-01-10 13:06:54,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 918 transitions. [2022-01-10 13:06:54,043 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 918 transitions. Word has length 79 [2022-01-10 13:06:54,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:54,044 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 918 transitions. [2022-01-10 13:06:54,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:54,045 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 918 transitions. [2022-01-10 13:06:54,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 13:06:54,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:54,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:54,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:06:54,050 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:54,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:54,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1712707724, now seen corresponding path program 1 times [2022-01-10 13:06:54,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:54,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7466142] [2022-01-10 13:06:54,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:54,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:54,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:54,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7466142] [2022-01-10 13:06:54,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7466142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:54,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:54,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:06:54,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839058167] [2022-01-10 13:06:54,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:54,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:06:54,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:54,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:06:54,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:06:54,227 INFO L87 Difference]: Start difference. First operand 570 states and 918 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:54,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:54,266 INFO L93 Difference]: Finished difference Result 1418 states and 2267 transitions. [2022-01-10 13:06:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:06:54,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 13:06:54,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:54,271 INFO L225 Difference]: With dead ends: 1418 [2022-01-10 13:06:54,271 INFO L226 Difference]: Without dead ends: 999 [2022-01-10 13:06:54,276 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 [2022-01-10 13:06:54,277 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 444 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:54,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 1106 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:06:54,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-01-10 13:06:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 997. [2022-01-10 13:06:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.5973895582329318) internal successors, (1591), 996 states have internal predecessors, (1591), 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) [2022-01-10 13:06:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1591 transitions. [2022-01-10 13:06:54,317 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1591 transitions. Word has length 80 [2022-01-10 13:06:54,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:54,318 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1591 transitions. [2022-01-10 13:06:54,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1591 transitions. [2022-01-10 13:06:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 13:06:54,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:54,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:54,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:06:54,324 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:54,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:54,328 INFO L85 PathProgramCache]: Analyzing trace with hash -305759907, now seen corresponding path program 1 times [2022-01-10 13:06:54,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:54,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693840814] [2022-01-10 13:06:54,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:54,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:54,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:54,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693840814] [2022-01-10 13:06:54,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693840814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:54,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:54,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:06:54,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127469854] [2022-01-10 13:06:54,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:54,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:06:54,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:54,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:06:54,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:06:54,471 INFO L87 Difference]: Start difference. First operand 997 states and 1591 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:54,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:54,522 INFO L93 Difference]: Finished difference Result 2380 states and 3783 transitions. [2022-01-10 13:06:54,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:06:54,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 13:06:54,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:54,531 INFO L225 Difference]: With dead ends: 2380 [2022-01-10 13:06:54,531 INFO L226 Difference]: Without dead ends: 1713 [2022-01-10 13:06:54,534 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 [2022-01-10 13:06:54,538 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 425 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:54,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 1133 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:06:54,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2022-01-10 13:06:54,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1711. [2022-01-10 13:06:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1710 states have (on average 1.5842105263157895) internal successors, (2709), 1710 states have internal predecessors, (2709), 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) [2022-01-10 13:06:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2709 transitions. [2022-01-10 13:06:54,576 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2709 transitions. Word has length 81 [2022-01-10 13:06:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:54,577 INFO L470 AbstractCegarLoop]: Abstraction has 1711 states and 2709 transitions. [2022-01-10 13:06:54,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:54,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2709 transitions. [2022-01-10 13:06:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 13:06:54,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:54,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:54,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:06:54,581 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:54,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:54,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1823563469, now seen corresponding path program 1 times [2022-01-10 13:06:54,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:54,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802677483] [2022-01-10 13:06:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:54,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:54,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:54,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802677483] [2022-01-10 13:06:54,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802677483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:54,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:54,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:06:54,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597377552] [2022-01-10 13:06:54,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:54,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:06:54,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:54,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:06:54,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:06:54,745 INFO L87 Difference]: Start difference. First operand 1711 states and 2709 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:54,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:54,840 INFO L93 Difference]: Finished difference Result 3929 states and 6203 transitions. [2022-01-10 13:06:54,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:06:54,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 13:06:54,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:54,849 INFO L225 Difference]: With dead ends: 3929 [2022-01-10 13:06:54,851 INFO L226 Difference]: Without dead ends: 2852 [2022-01-10 13:06:54,853 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 [2022-01-10 13:06:54,857 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 406 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:54,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 1160 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:06:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2022-01-10 13:06:54,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2850. [2022-01-10 13:06:54,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2849 states have (on average 1.5703755703755704) internal successors, (4474), 2849 states have internal predecessors, (4474), 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) [2022-01-10 13:06:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 4474 transitions. [2022-01-10 13:06:54,930 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 4474 transitions. Word has length 82 [2022-01-10 13:06:54,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:54,931 INFO L470 AbstractCegarLoop]: Abstraction has 2850 states and 4474 transitions. [2022-01-10 13:06:54,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:54,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 4474 transitions. [2022-01-10 13:06:54,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 13:06:54,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:54,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:54,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:06:54,938 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:54,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1388128196, now seen corresponding path program 1 times [2022-01-10 13:06:54,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:54,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053111642] [2022-01-10 13:06:54,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:54,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:55,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:55,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053111642] [2022-01-10 13:06:55,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053111642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:55,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:55,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:06:55,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052065685] [2022-01-10 13:06:55,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:55,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:06:55,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:55,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:06:55,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:06:55,037 INFO L87 Difference]: Start difference. First operand 2850 states and 4474 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:55,120 INFO L93 Difference]: Finished difference Result 6263 states and 9794 transitions. [2022-01-10 13:06:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:06:55,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 13:06:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:55,133 INFO L225 Difference]: With dead ends: 6263 [2022-01-10 13:06:55,134 INFO L226 Difference]: Without dead ends: 4556 [2022-01-10 13:06:55,138 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 [2022-01-10 13:06:55,139 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 388 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:55,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1059 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:06:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2022-01-10 13:06:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 4554. [2022-01-10 13:06:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4554 states, 4553 states have (on average 1.5519437733362618) internal successors, (7066), 4553 states have internal predecessors, (7066), 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) [2022-01-10 13:06:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 7066 transitions. [2022-01-10 13:06:55,298 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 7066 transitions. Word has length 83 [2022-01-10 13:06:55,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:55,299 INFO L470 AbstractCegarLoop]: Abstraction has 4554 states and 7066 transitions. [2022-01-10 13:06:55,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 7066 transitions. [2022-01-10 13:06:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 13:06:55,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:55,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:55,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:06:55,313 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:55,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:55,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1084870130, now seen corresponding path program 1 times [2022-01-10 13:06:55,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:55,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46170905] [2022-01-10 13:06:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:55,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:55,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:55,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46170905] [2022-01-10 13:06:55,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46170905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:55,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:55,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:06:55,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965756496] [2022-01-10 13:06:55,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:55,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:06:55,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:55,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:06:55,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:06:55,490 INFO L87 Difference]: Start difference. First operand 4554 states and 7066 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:55,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:55,598 INFO L93 Difference]: Finished difference Result 7203 states and 11192 transitions. [2022-01-10 13:06:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:06:55,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 13:06:55,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:55,606 INFO L225 Difference]: With dead ends: 7203 [2022-01-10 13:06:55,606 INFO L226 Difference]: Without dead ends: 2683 [2022-01-10 13:06:55,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:06:55,613 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 104 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:55,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1298 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:06:55,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2022-01-10 13:06:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2683. [2022-01-10 13:06:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 2682 states have (on average 1.5510812826249067) internal successors, (4160), 2682 states have internal predecessors, (4160), 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) [2022-01-10 13:06:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 4160 transitions. [2022-01-10 13:06:55,672 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 4160 transitions. Word has length 84 [2022-01-10 13:06:55,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:55,672 INFO L470 AbstractCegarLoop]: Abstraction has 2683 states and 4160 transitions. [2022-01-10 13:06:55,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 4160 transitions. [2022-01-10 13:06:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 13:06:55,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:55,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:55,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:06:55,677 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:55,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:55,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1420288778, now seen corresponding path program 1 times [2022-01-10 13:06:55,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:55,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280569334] [2022-01-10 13:06:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:55,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:55,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:55,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280569334] [2022-01-10 13:06:55,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280569334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:55,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:55,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:06:55,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970494511] [2022-01-10 13:06:55,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:55,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:06:55,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:55,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:06:55,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:06:55,852 INFO L87 Difference]: Start difference. First operand 2683 states and 4160 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-01-10 13:06:55,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:55,906 INFO L93 Difference]: Finished difference Result 5261 states and 8182 transitions. [2022-01-10 13:06:55,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:06:55,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 120 [2022-01-10 13:06:55,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:55,914 INFO L225 Difference]: With dead ends: 5261 [2022-01-10 13:06:55,915 INFO L226 Difference]: Without dead ends: 2683 [2022-01-10 13:06:55,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:06:55,918 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 1 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:55,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1342 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:06:55,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2022-01-10 13:06:55,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2683. [2022-01-10 13:06:55,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 2682 states have (on average 1.5503355704697988) internal successors, (4158), 2682 states have internal predecessors, (4158), 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) [2022-01-10 13:06:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 4158 transitions. [2022-01-10 13:06:55,976 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 4158 transitions. Word has length 120 [2022-01-10 13:06:55,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:55,977 INFO L470 AbstractCegarLoop]: Abstraction has 2683 states and 4158 transitions. [2022-01-10 13:06:55,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-01-10 13:06:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 4158 transitions. [2022-01-10 13:06:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 13:06:55,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:55,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:55,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:06:55,981 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:55,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:55,982 INFO L85 PathProgramCache]: Analyzing trace with hash -336090087, now seen corresponding path program 1 times [2022-01-10 13:06:55,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:55,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320742929] [2022-01-10 13:06:55,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:55,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:56,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:56,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320742929] [2022-01-10 13:06:56,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320742929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:56,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:56,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:06:56,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124384560] [2022-01-10 13:06:56,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:56,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:06:56,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:06:56,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:06:56,166 INFO L87 Difference]: Start difference. First operand 2683 states and 4158 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:57,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:57,799 INFO L93 Difference]: Finished difference Result 6932 states and 10674 transitions. [2022-01-10 13:06:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:06:57,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-01-10 13:06:57,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:57,813 INFO L225 Difference]: With dead ends: 6932 [2022-01-10 13:06:57,813 INFO L226 Difference]: Without dead ends: 5042 [2022-01-10 13:06:57,816 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 [2022-01-10 13:06:57,816 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 280 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:57,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 829 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 13:06:57,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5042 states. [2022-01-10 13:06:58,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5042 to 5040. [2022-01-10 13:06:58,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5040 states, 5039 states have (on average 1.5304623933320103) internal successors, (7712), 5039 states have internal predecessors, (7712), 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) [2022-01-10 13:06:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 7712 transitions. [2022-01-10 13:06:58,324 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 7712 transitions. Word has length 121 [2022-01-10 13:06:58,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:58,324 INFO L470 AbstractCegarLoop]: Abstraction has 5040 states and 7712 transitions. [2022-01-10 13:06:58,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:58,324 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 7712 transitions. [2022-01-10 13:06:58,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 13:06:58,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:58,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:58,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:06:58,332 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:58,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:58,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1466354422, now seen corresponding path program 1 times [2022-01-10 13:06:58,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:58,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404785992] [2022-01-10 13:06:58,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:58,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:58,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:58,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404785992] [2022-01-10 13:06:58,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404785992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:58,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:58,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:06:58,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322157930] [2022-01-10 13:06:58,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:58,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:06:58,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:58,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:06:58,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:06:58,479 INFO L87 Difference]: Start difference. First operand 5040 states and 7712 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2022-01-10 13:06:59,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:59,557 INFO L93 Difference]: Finished difference Result 11357 states and 17330 transitions. [2022-01-10 13:06:59,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:06:59,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 123 [2022-01-10 13:06:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:59,594 INFO L225 Difference]: With dead ends: 11357 [2022-01-10 13:06:59,594 INFO L226 Difference]: Without dead ends: 11355 [2022-01-10 13:06:59,597 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 [2022-01-10 13:06:59,613 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 449 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:59,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1636 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:06:59,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11355 states. [2022-01-10 13:07:00,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11355 to 5104. [2022-01-10 13:07:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5103 states have (on average 1.5238095238095237) internal successors, (7776), 5103 states have internal predecessors, (7776), 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) [2022-01-10 13:07:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 7776 transitions. [2022-01-10 13:07:00,174 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 7776 transitions. Word has length 123 [2022-01-10 13:07:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:00,174 INFO L470 AbstractCegarLoop]: Abstraction has 5104 states and 7776 transitions. [2022-01-10 13:07:00,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2022-01-10 13:07:00,174 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 7776 transitions. [2022-01-10 13:07:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:07:00,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:00,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:07:00,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:07:00,182 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:00,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:00,183 INFO L85 PathProgramCache]: Analyzing trace with hash -981273722, now seen corresponding path program 1 times [2022-01-10 13:07:00,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:00,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598426409] [2022-01-10 13:07:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:00,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:00,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:07:00,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:00,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598426409] [2022-01-10 13:07:00,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598426409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:00,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:00,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:00,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593714502] [2022-01-10 13:07:00,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:00,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:00,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:00,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:00,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:00,282 INFO L87 Difference]: Start difference. First operand 5104 states and 7776 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:01,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:01,172 INFO L93 Difference]: Finished difference Result 14711 states and 22407 transitions. [2022-01-10 13:07:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:07:01,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:07:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:01,189 INFO L225 Difference]: With dead ends: 14711 [2022-01-10 13:07:01,189 INFO L226 Difference]: Without dead ends: 9724 [2022-01-10 13:07:01,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:01,197 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 349 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:01,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 857 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:07:01,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9724 states. [2022-01-10 13:07:02,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9724 to 9722. [2022-01-10 13:07:02,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9722 states, 9721 states have (on average 1.5141446353255839) internal successors, (14719), 9721 states have internal predecessors, (14719), 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) [2022-01-10 13:07:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9722 states to 9722 states and 14719 transitions. [2022-01-10 13:07:02,187 INFO L78 Accepts]: Start accepts. Automaton has 9722 states and 14719 transitions. Word has length 124 [2022-01-10 13:07:02,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:02,187 INFO L470 AbstractCegarLoop]: Abstraction has 9722 states and 14719 transitions. [2022-01-10 13:07:02,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:02,188 INFO L276 IsEmpty]: Start isEmpty. Operand 9722 states and 14719 transitions. [2022-01-10 13:07:02,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:07:02,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:02,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:07:02,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:07:02,205 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:02,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:02,205 INFO L85 PathProgramCache]: Analyzing trace with hash -948503835, now seen corresponding path program 1 times [2022-01-10 13:07:02,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:02,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102899261] [2022-01-10 13:07:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:02,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:07:02,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:02,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102899261] [2022-01-10 13:07:02,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102899261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:02,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:02,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:02,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163248097] [2022-01-10 13:07:02,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:02,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:02,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:02,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:02,306 INFO L87 Difference]: Start difference. First operand 9722 states and 14719 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:04,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:04,207 INFO L93 Difference]: Finished difference Result 27923 states and 42207 transitions. [2022-01-10 13:07:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:07:04,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:07:04,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:04,237 INFO L225 Difference]: With dead ends: 27923 [2022-01-10 13:07:04,237 INFO L226 Difference]: Without dead ends: 18443 [2022-01-10 13:07:04,246 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 [2022-01-10 13:07:04,246 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 331 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:04,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 857 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:07:04,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18443 states. [2022-01-10 13:07:05,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18443 to 18441. [2022-01-10 13:07:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18441 states, 18440 states have (on average 1.5018980477223427) internal successors, (27695), 18440 states have internal predecessors, (27695), 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) [2022-01-10 13:07:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18441 states to 18441 states and 27695 transitions. [2022-01-10 13:07:06,028 INFO L78 Accepts]: Start accepts. Automaton has 18441 states and 27695 transitions. Word has length 124 [2022-01-10 13:07:06,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:06,028 INFO L470 AbstractCegarLoop]: Abstraction has 18441 states and 27695 transitions. [2022-01-10 13:07:06,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:06,028 INFO L276 IsEmpty]: Start isEmpty. Operand 18441 states and 27695 transitions. [2022-01-10 13:07:06,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:07:06,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:06,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:07:06,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:07:06,055 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:06,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1787184646, now seen corresponding path program 1 times [2022-01-10 13:07:06,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:06,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410336138] [2022-01-10 13:07:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:06,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:07:06,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:06,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410336138] [2022-01-10 13:07:06,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410336138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:06,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:06,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:06,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351003514] [2022-01-10 13:07:06,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:06,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:06,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:06,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:06,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:06,169 INFO L87 Difference]: Start difference. First operand 18441 states and 27695 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:09,597 INFO L93 Difference]: Finished difference Result 52517 states and 78627 transitions. [2022-01-10 13:07:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:07:09,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:07:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:09,652 INFO L225 Difference]: With dead ends: 52517 [2022-01-10 13:07:09,652 INFO L226 Difference]: Without dead ends: 34744 [2022-01-10 13:07:09,673 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 [2022-01-10 13:07:09,674 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 313 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:09,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 857 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:07:09,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34744 states. [2022-01-10 13:07:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34744 to 34742. [2022-01-10 13:07:13,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34742 states, 34741 states have (on average 1.486514492962206) internal successors, (51643), 34741 states have internal predecessors, (51643), 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) [2022-01-10 13:07:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34742 states to 34742 states and 51643 transitions. [2022-01-10 13:07:13,281 INFO L78 Accepts]: Start accepts. Automaton has 34742 states and 51643 transitions. Word has length 124 [2022-01-10 13:07:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:13,281 INFO L470 AbstractCegarLoop]: Abstraction has 34742 states and 51643 transitions. [2022-01-10 13:07:13,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 34742 states and 51643 transitions. [2022-01-10 13:07:13,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:07:13,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:13,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:07:13,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:07:13,328 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:13,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1334687321, now seen corresponding path program 1 times [2022-01-10 13:07:13,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:13,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419532224] [2022-01-10 13:07:13,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:13,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:13,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:07:13,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:13,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419532224] [2022-01-10 13:07:13,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419532224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:13,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:13,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:13,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539606703] [2022-01-10 13:07:13,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:13,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:13,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:13,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:13,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:13,518 INFO L87 Difference]: Start difference. First operand 34742 states and 51643 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:19,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:19,559 INFO L93 Difference]: Finished difference Result 97131 states and 143587 transitions. [2022-01-10 13:07:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:07:19,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:07:19,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:19,672 INFO L225 Difference]: With dead ends: 97131 [2022-01-10 13:07:19,673 INFO L226 Difference]: Without dead ends: 64733 [2022-01-10 13:07:19,709 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 [2022-01-10 13:07:19,710 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 295 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:19,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 857 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:07:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64733 states. [2022-01-10 13:07:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64733 to 64731. [2022-01-10 13:07:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64731 states, 64730 states have (on average 1.4661980534528039) internal successors, (94907), 64730 states have internal predecessors, (94907), 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) [2022-01-10 13:07:26,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64731 states to 64731 states and 94907 transitions. [2022-01-10 13:07:26,669 INFO L78 Accepts]: Start accepts. Automaton has 64731 states and 94907 transitions. Word has length 124 [2022-01-10 13:07:26,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:26,670 INFO L470 AbstractCegarLoop]: Abstraction has 64731 states and 94907 transitions. [2022-01-10 13:07:26,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:26,670 INFO L276 IsEmpty]: Start isEmpty. Operand 64731 states and 94907 transitions. [2022-01-10 13:07:26,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:07:26,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:26,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:07:26,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:07:26,755 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:26,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1365984712, now seen corresponding path program 1 times [2022-01-10 13:07:26,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:26,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211275894] [2022-01-10 13:07:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:26,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:07:26,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:26,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211275894] [2022-01-10 13:07:26,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211275894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:26,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:26,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:26,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406492990] [2022-01-10 13:07:26,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:26,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:26,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:26,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:26,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:26,842 INFO L87 Difference]: Start difference. First operand 64731 states and 94907 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:38,251 INFO L93 Difference]: Finished difference Result 173677 states and 251843 transitions. [2022-01-10 13:07:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:07:38,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:07:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:38,491 INFO L225 Difference]: With dead ends: 173677 [2022-01-10 13:07:38,492 INFO L226 Difference]: Without dead ends: 118246 [2022-01-10 13:07:38,545 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 [2022-01-10 13:07:38,545 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 277 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:38,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 857 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:07:38,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118246 states. [2022-01-10 13:07:51,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118246 to 118244. [2022-01-10 13:07:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118244 states, 118243 states have (on average 1.4363894691440509) internal successors, (169843), 118243 states have internal predecessors, (169843), 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) [2022-01-10 13:07:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118244 states to 118244 states and 169843 transitions. [2022-01-10 13:07:51,639 INFO L78 Accepts]: Start accepts. Automaton has 118244 states and 169843 transitions. Word has length 124 [2022-01-10 13:07:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:51,639 INFO L470 AbstractCegarLoop]: Abstraction has 118244 states and 169843 transitions. [2022-01-10 13:07:51,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:51,640 INFO L276 IsEmpty]: Start isEmpty. Operand 118244 states and 169843 transitions. [2022-01-10 13:07:51,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:07:51,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:51,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:07:51,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:07:51,778 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:51,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:51,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1788663995, now seen corresponding path program 1 times [2022-01-10 13:07:51,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:51,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882441249] [2022-01-10 13:07:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:51,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:07:52,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:52,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882441249] [2022-01-10 13:07:52,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882441249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:52,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:52,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:52,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792231804] [2022-01-10 13:07:52,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:52,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:52,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:52,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:52,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:52,091 INFO L87 Difference]: Start difference. First operand 118244 states and 169843 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:54,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:07:58,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []