/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.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:03:37,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:03:37,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:03:37,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:03:37,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:03:37,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:03:37,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:03:37,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:03:37,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:03:37,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:03:37,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:03:37,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:03:37,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:03:37,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:03:37,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:03:37,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:03:37,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:03:37,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:03:37,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:03:37,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:03:37,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:03:37,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:03:37,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:03:37,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:03:37,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:03:37,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:03:37,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:03:37,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:03:37,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:03:37,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:03:37,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:03:37,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:03:37,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:03:37,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:03:37,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:03:37,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:03:37,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:03:37,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:03:37,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:03:37,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:03:37,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:03:37,481 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 13:03:37,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:03:37,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:03:37,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:03:37,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:03:37,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:03:37,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:03:37,523 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:03:37,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:03:37,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:03:37,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:03:37,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:03:37,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:03:37,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:03:37,524 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:03:37,524 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:03:37,524 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:03:37,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:03:37,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:03:37,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:03:37,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:03:37,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:03:37,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:03:37,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:03:37,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:03:37,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:03:37,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:03:37,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:03:37,526 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:03:37,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:03:37,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:03:37,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:03:37,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:03:37,527 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:03:37,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:03:37,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:03:37,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:03:37,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:03:37,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:03:37,708 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:03:37,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-10 13:03:37,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55df9da8c/5851e2a297974cb79de55223724ea7dc/FLAG6f0b913d1 [2022-01-10 13:03:38,174 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:03:38,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-10 13:03:38,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55df9da8c/5851e2a297974cb79de55223724ea7dc/FLAG6f0b913d1 [2022-01-10 13:03:38,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55df9da8c/5851e2a297974cb79de55223724ea7dc [2022-01-10 13:03:38,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:03:38,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:03:38,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:03:38,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:03:38,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:03:38,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:03:38" (1/1) ... [2022-01-10 13:03:38,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cfc265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38, skipping insertion in model container [2022-01-10 13:03:38,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:03:38" (1/1) ... [2022-01-10 13:03:38,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:03:38,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:03:38,798 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2022-01-10 13:03:38,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:03:38,833 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:03:38,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2022-01-10 13:03:38,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:03:38,925 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:03:38,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38 WrapperNode [2022-01-10 13:03:38,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:03:38,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:03:38,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:03:38,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:03:38,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38" (1/1) ... [2022-01-10 13:03:38,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38" (1/1) ... [2022-01-10 13:03:38,991 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 662 [2022-01-10 13:03:38,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:03:38,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:03:38,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:03:38,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:03:38,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38" (1/1) ... [2022-01-10 13:03:38,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38" (1/1) ... [2022-01-10 13:03:39,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38" (1/1) ... [2022-01-10 13:03:39,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38" (1/1) ... [2022-01-10 13:03:39,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38" (1/1) ... [2022-01-10 13:03:39,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38" (1/1) ... [2022-01-10 13:03:39,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38" (1/1) ... [2022-01-10 13:03:39,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:03:39,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:03:39,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:03:39,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:03:39,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38" (1/1) ... [2022-01-10 13:03:39,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:03:39,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:03:39,091 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 13:03:39,124 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 13:03:39,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:03:39,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:03:39,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:03:39,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:03:39,218 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:03:39,219 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:03:39,634 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:03:39,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:03:39,640 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:03:39,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:03:39 BoogieIcfgContainer [2022-01-10 13:03:39,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:03:39,642 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:03:39,643 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:03:39,643 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:03:39,645 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:03:39" (1/1) ... [2022-01-10 13:03:40,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:03:40 BasicIcfg [2022-01-10 13:03:40,026 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:03:40,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:03:40,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:03:40,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:03:40,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:03:38" (1/4) ... [2022-01-10 13:03:40,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e933233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:03:40, skipping insertion in model container [2022-01-10 13:03:40,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:03:38" (2/4) ... [2022-01-10 13:03:40,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e933233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:03:40, skipping insertion in model container [2022-01-10 13:03:40,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:03:39" (3/4) ... [2022-01-10 13:03:40,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e933233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:03:40, skipping insertion in model container [2022-01-10 13:03:40,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:03:40" (4/4) ... [2022-01-10 13:03:40,030 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 13:03:40,034 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:03:40,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:03:40,061 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:03:40,065 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 13:03:40,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:03:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 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 13:03:40,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 13:03:40,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:03:40,084 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] [2022-01-10 13:03:40,084 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:03:40,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:03:40,088 INFO L85 PathProgramCache]: Analyzing trace with hash 363378366, now seen corresponding path program 1 times [2022-01-10 13:03:40,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:03:40,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405794091] [2022-01-10 13:03:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:03:40,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:03:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:03:40,579 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 13:03:40,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:03:40,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405794091] [2022-01-10 13:03:40,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405794091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:03:40,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:03:40,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:03:40,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920603000] [2022-01-10 13:03:40,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:03:40,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:03:40,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:03:40,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:03:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:03:40,609 INFO L87 Difference]: Start difference. First operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 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 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 13:03:41,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:03:41,217 INFO L93 Difference]: Finished difference Result 365 states and 600 transitions. [2022-01-10 13:03:41,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:03:41,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 13:03:41,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:03:41,227 INFO L225 Difference]: With dead ends: 365 [2022-01-10 13:03:41,227 INFO L226 Difference]: Without dead ends: 275 [2022-01-10 13:03:41,229 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 13:03:41,231 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 156 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 13:03:41,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 568 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 13:03:41,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-01-10 13:03:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 273. [2022-01-10 13:03:41,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.5036764705882353) internal successors, (409), 272 states have internal predecessors, (409), 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 13:03:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 409 transitions. [2022-01-10 13:03:41,346 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 409 transitions. Word has length 65 [2022-01-10 13:03:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:03:41,347 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 409 transitions. [2022-01-10 13:03:41,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 13:03:41,347 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 409 transitions. [2022-01-10 13:03:41,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 13:03:41,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:03:41,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:03:41,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:03:41,351 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:03:41,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:03:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1621157669, now seen corresponding path program 1 times [2022-01-10 13:03:41,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:03:41,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57520876] [2022-01-10 13:03:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:03:41,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:03:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:03:41,585 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 13:03:41,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:03:41,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57520876] [2022-01-10 13:03:41,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57520876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:03:41,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:03:41,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:03:41,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959069738] [2022-01-10 13:03:41,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:03:41,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:03:41,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:03:41,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:03:41,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:03:41,588 INFO L87 Difference]: Start difference. First operand 273 states and 409 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:03:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:03:41,676 INFO L93 Difference]: Finished difference Result 417 states and 633 transitions. [2022-01-10 13:03:41,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:03:41,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 13:03:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:03:41,681 INFO L225 Difference]: With dead ends: 417 [2022-01-10 13:03:41,681 INFO L226 Difference]: Without dead ends: 415 [2022-01-10 13:03:41,685 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 13:03:41,686 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 362 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 647 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 13:03:41,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 647 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:03:41,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-01-10 13:03:41,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 275. [2022-01-10 13:03:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.5) internal successors, (411), 274 states have internal predecessors, (411), 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 13:03:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 411 transitions. [2022-01-10 13:03:41,723 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 411 transitions. Word has length 66 [2022-01-10 13:03:41,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:03:41,725 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 411 transitions. [2022-01-10 13:03:41,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:03:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 411 transitions. [2022-01-10 13:03:41,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 13:03:41,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:03:41,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:03:41,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:03:41,732 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:03:41,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:03:41,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1284700892, now seen corresponding path program 1 times [2022-01-10 13:03:41,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:03:41,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918092810] [2022-01-10 13:03:41,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:03:41,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:03:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:03:41,992 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 13:03:41,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:03:41,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918092810] [2022-01-10 13:03:41,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918092810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:03:41,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:03:41,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:03:41,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000328849] [2022-01-10 13:03:41,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:03:41,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:03:41,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:03:41,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:03:41,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:03:41,995 INFO L87 Difference]: Start difference. First operand 275 states and 411 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:03:42,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:03:42,538 INFO L93 Difference]: Finished difference Result 1530 states and 2367 transitions. [2022-01-10 13:03:42,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 13:03:42,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 13:03:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:03:42,543 INFO L225 Difference]: With dead ends: 1530 [2022-01-10 13:03:42,543 INFO L226 Difference]: Without dead ends: 1318 [2022-01-10 13:03:42,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-10 13:03:42,551 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 1120 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:03:42,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 2069 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 13:03:42,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-01-10 13:03:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 852. [2022-01-10 13:03:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.5311398354876615) internal successors, (1303), 851 states have internal predecessors, (1303), 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 13:03:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1303 transitions. [2022-01-10 13:03:42,727 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1303 transitions. Word has length 67 [2022-01-10 13:03:42,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:03:42,728 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1303 transitions. [2022-01-10 13:03:42,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:03:42,728 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1303 transitions. [2022-01-10 13:03:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 13:03:42,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:03:42,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:03:42,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:03:42,729 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:03:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:03:42,730 INFO L85 PathProgramCache]: Analyzing trace with hash -597360800, now seen corresponding path program 1 times [2022-01-10 13:03:42,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:03:42,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967412377] [2022-01-10 13:03:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:03:42,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:03:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:03:42,968 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 13:03:42,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:03:42,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967412377] [2022-01-10 13:03:42,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967412377] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:03:42,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:03:42,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:03:42,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339272026] [2022-01-10 13:03:42,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:03:42,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:03:42,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:03:42,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:03:42,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:03:42,970 INFO L87 Difference]: Start difference. First operand 852 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:03:45,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:03:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:03:45,327 INFO L93 Difference]: Finished difference Result 1916 states and 2965 transitions. [2022-01-10 13:03:45,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:03:45,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 13:03:45,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:03:45,331 INFO L225 Difference]: With dead ends: 1916 [2022-01-10 13:03:45,331 INFO L226 Difference]: Without dead ends: 1358 [2022-01-10 13:03:45,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:03:45,333 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 226 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:03:45,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 717 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 13:03:45,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-01-10 13:03:45,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1356. [2022-01-10 13:03:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 1.537269372693727) internal successors, (2083), 1355 states have internal predecessors, (2083), 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 13:03:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 2083 transitions. [2022-01-10 13:03:45,556 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 2083 transitions. Word has length 68 [2022-01-10 13:03:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:03:45,557 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 2083 transitions. [2022-01-10 13:03:45,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:03:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 2083 transitions. [2022-01-10 13:03:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 13:03:45,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:03:45,558 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] [2022-01-10 13:03:45,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:03:45,558 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:03:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:03:45,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1740142315, now seen corresponding path program 1 times [2022-01-10 13:03:45,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:03:45,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073353463] [2022-01-10 13:03:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:03:45,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:03:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:03:45,853 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 13:03:45,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:03:45,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073353463] [2022-01-10 13:03:45,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073353463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:03:45,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:03:45,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:03:45,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434708001] [2022-01-10 13:03:45,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:03:45,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:03:45,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:03:45,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:03:45,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:03:45,855 INFO L87 Difference]: Start difference. First operand 1356 states and 2083 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 13:03:48,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:03:51,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:03:55,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:03:58,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:04:00,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:04:00,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:00,802 INFO L93 Difference]: Finished difference Result 9236 states and 14349 transitions. [2022-01-10 13:04:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 13:04:00,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 69 [2022-01-10 13:04:00,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:00,828 INFO L225 Difference]: With dead ends: 9236 [2022-01-10 13:04:00,828 INFO L226 Difference]: Without dead ends: 7968 [2022-01-10 13:04:00,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 13:04:00,832 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1448 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 28 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:04:00,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 971 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 712 Invalid, 5 Unknown, 0 Unchecked, 13.0s Time] [2022-01-10 13:04:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2022-01-10 13:04:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 4776. [2022-01-10 13:04:01,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4776 states, 4775 states have (on average 1.5415706806282723) internal successors, (7361), 4775 states have internal predecessors, (7361), 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 13:04:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 7361 transitions. [2022-01-10 13:04:01,986 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 7361 transitions. Word has length 69 [2022-01-10 13:04:01,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:01,986 INFO L470 AbstractCegarLoop]: Abstraction has 4776 states and 7361 transitions. [2022-01-10 13:04:01,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 13:04:01,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 7361 transitions. [2022-01-10 13:04:01,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 13:04:01,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:01,987 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] [2022-01-10 13:04:01,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:04:01,988 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:01,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:01,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1918638426, now seen corresponding path program 1 times [2022-01-10 13:04:01,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:01,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22782770] [2022-01-10 13:04:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:01,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:02,054 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 13:04:02,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:02,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22782770] [2022-01-10 13:04:02,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22782770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:02,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:02,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:04:02,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776143943] [2022-01-10 13:04:02,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:02,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:04:02,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:02,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:04:02,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:04:02,056 INFO L87 Difference]: Start difference. First operand 4776 states and 7361 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 13:04:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:03,790 INFO L93 Difference]: Finished difference Result 12130 states and 18687 transitions. [2022-01-10 13:04:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:04:03,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-01-10 13:04:03,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:03,811 INFO L225 Difference]: With dead ends: 12130 [2022-01-10 13:04:03,811 INFO L226 Difference]: Without dead ends: 7666 [2022-01-10 13:04:03,816 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 13:04:03,816 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 171 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:04:03,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 478 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:04:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7666 states. [2022-01-10 13:04:05,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7666 to 7631. [2022-01-10 13:04:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7631 states, 7630 states have (on average 1.518348623853211) internal successors, (11585), 7630 states have internal predecessors, (11585), 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 13:04:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7631 states to 7631 states and 11585 transitions. [2022-01-10 13:04:05,701 INFO L78 Accepts]: Start accepts. Automaton has 7631 states and 11585 transitions. Word has length 69 [2022-01-10 13:04:05,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:05,701 INFO L470 AbstractCegarLoop]: Abstraction has 7631 states and 11585 transitions. [2022-01-10 13:04:05,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 13:04:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand 7631 states and 11585 transitions. [2022-01-10 13:04:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 13:04:05,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:05,703 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] [2022-01-10 13:04:05,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:04:05,704 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:05,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2130835253, now seen corresponding path program 1 times [2022-01-10 13:04:05,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:05,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028727635] [2022-01-10 13:04:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:05,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:05,776 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 13:04:05,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:05,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028727635] [2022-01-10 13:04:05,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028727635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:05,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:05,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:04:05,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961915197] [2022-01-10 13:04:05,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:05,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:04:05,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:05,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:04:05,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:04:05,781 INFO L87 Difference]: Start difference. First operand 7631 states and 11585 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 13:04:09,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:09,114 INFO L93 Difference]: Finished difference Result 20863 states and 31599 transitions. [2022-01-10 13:04:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:04:09,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-01-10 13:04:09,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:09,145 INFO L225 Difference]: With dead ends: 20863 [2022-01-10 13:04:09,146 INFO L226 Difference]: Without dead ends: 13809 [2022-01-10 13:04:09,152 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 13:04:09,153 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 158 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:04:09,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 474 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:04:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13809 states. [2022-01-10 13:04:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13809 to 13771. [2022-01-10 13:04:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13771 states, 13770 states have (on average 1.491285403050109) internal successors, (20535), 13770 states have internal predecessors, (20535), 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 13:04:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13771 states to 13771 states and 20535 transitions. [2022-01-10 13:04:12,549 INFO L78 Accepts]: Start accepts. Automaton has 13771 states and 20535 transitions. Word has length 69 [2022-01-10 13:04:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:12,549 INFO L470 AbstractCegarLoop]: Abstraction has 13771 states and 20535 transitions. [2022-01-10 13:04:12,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 13:04:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand 13771 states and 20535 transitions. [2022-01-10 13:04:12,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 13:04:12,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:12,566 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] [2022-01-10 13:04:12,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:04:12,566 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:12,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1310776327, now seen corresponding path program 1 times [2022-01-10 13:04:12,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:12,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957932601] [2022-01-10 13:04:12,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:12,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:12,666 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 13:04:12,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:12,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957932601] [2022-01-10 13:04:12,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957932601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:12,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:12,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:04:12,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765460437] [2022-01-10 13:04:12,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:12,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:04:12,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:12,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:04:12,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:04:12,668 INFO L87 Difference]: Start difference. First operand 13771 states and 20535 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 13:04:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:16,094 INFO L93 Difference]: Finished difference Result 18401 states and 27333 transitions. [2022-01-10 13:04:16,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:04:16,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-01-10 13:04:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:16,115 INFO L225 Difference]: With dead ends: 18401 [2022-01-10 13:04:16,116 INFO L226 Difference]: Without dead ends: 14561 [2022-01-10 13:04:16,123 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 13:04:16,124 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 145 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:04:16,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 474 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:04:16,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14561 states. [2022-01-10 13:04:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14561 to 14559. [2022-01-10 13:04:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14559 states, 14558 states have (on average 1.4594037642533315) internal successors, (21246), 14558 states have internal predecessors, (21246), 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 13:04:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14559 states to 14559 states and 21246 transitions. [2022-01-10 13:04:19,565 INFO L78 Accepts]: Start accepts. Automaton has 14559 states and 21246 transitions. Word has length 69 [2022-01-10 13:04:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:19,566 INFO L470 AbstractCegarLoop]: Abstraction has 14559 states and 21246 transitions. [2022-01-10 13:04:19,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 13:04:19,566 INFO L276 IsEmpty]: Start isEmpty. Operand 14559 states and 21246 transitions. [2022-01-10 13:04:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 13:04:19,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:19,569 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] [2022-01-10 13:04:19,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:04:19,569 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:19,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash 16147478, now seen corresponding path program 1 times [2022-01-10 13:04:19,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:19,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132629028] [2022-01-10 13:04:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:19,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:19,633 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 13:04:19,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:19,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132629028] [2022-01-10 13:04:19,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132629028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:19,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:19,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:04:19,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780143030] [2022-01-10 13:04:19,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:19,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:04:19,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:19,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:04:19,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:04:19,635 INFO L87 Difference]: Start difference. First operand 14559 states and 21246 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 13:04:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:23,676 INFO L93 Difference]: Finished difference Result 27397 states and 40049 transitions. [2022-01-10 13:04:23,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:04:23,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-01-10 13:04:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:23,699 INFO L225 Difference]: With dead ends: 27397 [2022-01-10 13:04:23,699 INFO L226 Difference]: Without dead ends: 17516 [2022-01-10 13:04:23,712 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 13:04:23,713 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 175 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:04:23,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 579 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:04:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17516 states. [2022-01-10 13:04:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17516 to 17470. [2022-01-10 13:04:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17470 states, 17469 states have (on average 1.4457038181922262) internal successors, (25255), 17469 states have internal predecessors, (25255), 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 13:04:27,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17470 states to 17470 states and 25255 transitions. [2022-01-10 13:04:27,932 INFO L78 Accepts]: Start accepts. Automaton has 17470 states and 25255 transitions. Word has length 69 [2022-01-10 13:04:27,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:27,932 INFO L470 AbstractCegarLoop]: Abstraction has 17470 states and 25255 transitions. [2022-01-10 13:04:27,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 13:04:27,933 INFO L276 IsEmpty]: Start isEmpty. Operand 17470 states and 25255 transitions. [2022-01-10 13:04:27,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 13:04:27,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:27,937 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] [2022-01-10 13:04:27,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:04:27,937 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:27,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:27,937 INFO L85 PathProgramCache]: Analyzing trace with hash -620039077, now seen corresponding path program 1 times [2022-01-10 13:04:27,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:27,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343510537] [2022-01-10 13:04:27,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:27,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:28,169 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 13:04:28,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:28,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343510537] [2022-01-10 13:04:28,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343510537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:28,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:28,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:04:28,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123234746] [2022-01-10 13:04:28,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:28,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:04:28,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:28,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:04:28,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:04:28,171 INFO L87 Difference]: Start difference. First operand 17470 states and 25255 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 13:04:32,758 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 []