/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.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:14:58,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:14:58,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:14:58,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:14:58,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:14:58,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:14:58,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:14:58,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:14:58,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:14:58,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:14:58,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:14:58,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:14:58,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:14:58,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:14:58,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:14:58,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:14:58,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:14:58,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:14:58,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:14:58,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:14:58,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:14:58,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:14:58,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:14:58,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:14:58,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:14:58,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:14:58,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:14:58,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:14:58,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:14:58,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:14:58,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:14:58,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:14:58,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:14:58,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:14:58,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:14:58,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:14:58,370 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 13:14:58,394 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:14:58,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:14:58,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:14:58,395 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:14:58,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:14:58,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:14:58,396 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:14:58,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:14:58,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:14:58,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:14:58,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:14:58,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:14:58,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:14:58,397 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:14:58,397 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:14:58,397 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:14:58,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:14:58,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:14:58,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:14:58,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:14:58,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:14:58,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:14:58,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:14:58,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:14:58,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:14:58,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:14:58,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:14:58,406 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:14:58,406 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:14:58,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:14:58,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:14:58,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:14:58,409 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:14:58,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:14:58,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:14:58,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:14:58,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:14:58,635 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:14:58,635 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:14:58,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2022-01-10 13:14:58,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e77dae8/fc488cf39e2d4198b62986377328a6b1/FLAG9f9f34dd5 [2022-01-10 13:14:59,163 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:14:59,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2022-01-10 13:14:59,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e77dae8/fc488cf39e2d4198b62986377328a6b1/FLAG9f9f34dd5 [2022-01-10 13:14:59,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e77dae8/fc488cf39e2d4198b62986377328a6b1 [2022-01-10 13:14:59,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:14:59,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:14:59,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:14:59,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:14:59,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:14:59,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:14:59" (1/1) ... [2022-01-10 13:14:59,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed90300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59, skipping insertion in model container [2022-01-10 13:14:59,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:14:59" (1/1) ... [2022-01-10 13:14:59,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:14:59,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:14:59,505 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.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10527,10540] [2022-01-10 13:14:59,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:14:59,577 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:14:59,636 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.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10527,10540] [2022-01-10 13:14:59,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:14:59,683 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:14:59,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59 WrapperNode [2022-01-10 13:14:59,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:14:59,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:14:59,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:14:59,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:14:59,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59" (1/1) ... [2022-01-10 13:14:59,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59" (1/1) ... [2022-01-10 13:14:59,750 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 821 [2022-01-10 13:14:59,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:14:59,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:14:59,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:14:59,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:14:59,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59" (1/1) ... [2022-01-10 13:14:59,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59" (1/1) ... [2022-01-10 13:14:59,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59" (1/1) ... [2022-01-10 13:14:59,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59" (1/1) ... [2022-01-10 13:14:59,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59" (1/1) ... [2022-01-10 13:14:59,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59" (1/1) ... [2022-01-10 13:14:59,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59" (1/1) ... [2022-01-10 13:14:59,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:14:59,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:14:59,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:14:59,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:14:59,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59" (1/1) ... [2022-01-10 13:14:59,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:14:59,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:14:59,820 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 13:14:59,837 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 13:14:59,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:14:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:14:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:14:59,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:14:59,967 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:14:59,968 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:15:00,776 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:15:00,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:15:00,784 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:15:00,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:15:00 BoogieIcfgContainer [2022-01-10 13:15:00,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:15:00,791 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:15:00,791 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:15:00,792 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:15:00,794 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:15:00" (1/1) ... [2022-01-10 13:15:01,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:15:01 BasicIcfg [2022-01-10 13:15:01,423 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:15:01,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:15:01,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:15:01,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:15:01,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:14:59" (1/4) ... [2022-01-10 13:15:01,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dad1d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:15:01, skipping insertion in model container [2022-01-10 13:15:01,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:14:59" (2/4) ... [2022-01-10 13:15:01,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dad1d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:15:01, skipping insertion in model container [2022-01-10 13:15:01,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:15:00" (3/4) ... [2022-01-10 13:15:01,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dad1d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:15:01, skipping insertion in model container [2022-01-10 13:15:01,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:15:01" (4/4) ... [2022-01-10 13:15:01,431 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 13:15:01,436 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:15:01,436 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:15:01,492 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:15:01,499 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 13:15:01,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:15:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 200 states have (on average 1.765) internal successors, (353), 201 states have internal predecessors, (353), 0 states have call successors, (0), 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 13:15:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 13:15:01,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:15:01,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:15:01,532 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:15:01,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:15:01,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1897523168, now seen corresponding path program 1 times [2022-01-10 13:15:01,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:15:01,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579752738] [2022-01-10 13:15:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:15:01,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:15:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:15:02,391 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 13:15:02,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:15:02,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579752738] [2022-01-10 13:15:02,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579752738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:15:02,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:15:02,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:15:02,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965579705] [2022-01-10 13:15:02,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:15:02,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:15:02,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:15:02,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:15:02,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:15:02,446 INFO L87 Difference]: Start difference. First operand has 202 states, 200 states have (on average 1.765) internal successors, (353), 201 states have internal predecessors, (353), 0 states have call successors, (0), 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 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 13:15:04,874 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 13:15:05,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:15:05,454 INFO L93 Difference]: Finished difference Result 396 states and 663 transitions. [2022-01-10 13:15:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:15:05,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 13:15:05,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:15:05,471 INFO L225 Difference]: With dead ends: 396 [2022-01-10 13:15:05,471 INFO L226 Difference]: Without dead ends: 306 [2022-01-10 13:15:05,473 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 13:15:05,480 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 153 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 13:15:05,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 747 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 13:15:05,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-01-10 13:15:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2022-01-10 13:15:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.4455445544554455) internal successors, (438), 303 states have internal predecessors, (438), 0 states have call successors, (0), 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 13:15:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 438 transitions. [2022-01-10 13:15:05,566 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 438 transitions. Word has length 108 [2022-01-10 13:15:05,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:15:05,567 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 438 transitions. [2022-01-10 13:15:05,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 13:15:05,567 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 438 transitions. [2022-01-10 13:15:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 13:15:05,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:15:05,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:15:05,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:15:05,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:15:05,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:15:05,575 INFO L85 PathProgramCache]: Analyzing trace with hash -889551457, now seen corresponding path program 1 times [2022-01-10 13:15:05,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:15:05,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87341426] [2022-01-10 13:15:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:15:05,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:15:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:15:06,368 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 13:15:06,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:15:06,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87341426] [2022-01-10 13:15:06,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87341426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:15:06,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:15:06,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:15:06,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922244813] [2022-01-10 13:15:06,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:15:06,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:15:06,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:15:06,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:15:06,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:15:06,372 INFO L87 Difference]: Start difference. First operand 304 states and 438 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 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 13:15:09,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:15:11,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:15:14,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:15:18,833 WARN L534 Checker$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 13:15:20,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:15:23,165 WARN L534 Checker$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 13:15:25,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:15:27,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:15:31,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:15:33,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:15:36,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:15:37,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:15:37,352 INFO L93 Difference]: Finished difference Result 1781 states and 2756 transitions. [2022-01-10 13:15:37,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 13:15:37,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 13:15:37,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:15:37,362 INFO L225 Difference]: With dead ends: 1781 [2022-01-10 13:15:37,363 INFO L226 Difference]: Without dead ends: 1538 [2022-01-10 13:15:37,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 13:15:37,365 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 1291 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 16 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:15:37,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1291 Valid, 2145 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1069 Invalid, 11 Unknown, 0 Unchecked, 30.1s Time] [2022-01-10 13:15:37,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2022-01-10 13:15:37,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 666. [2022-01-10 13:15:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.5203007518796992) internal successors, (1011), 665 states have internal predecessors, (1011), 0 states have call successors, (0), 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 13:15:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1011 transitions. [2022-01-10 13:15:37,593 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1011 transitions. Word has length 110 [2022-01-10 13:15:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:15:37,595 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1011 transitions. [2022-01-10 13:15:37,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 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 13:15:37,595 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1011 transitions. [2022-01-10 13:15:37,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 13:15:37,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:15:37,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:15:37,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:15:37,601 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:15:37,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:15:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash -114722827, now seen corresponding path program 1 times [2022-01-10 13:15:37,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:15:37,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870914097] [2022-01-10 13:15:37,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:15:37,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:15:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:15:38,383 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 13:15:38,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:15:38,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870914097] [2022-01-10 13:15:38,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870914097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:15:38,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:15:38,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:15:38,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912057368] [2022-01-10 13:15:38,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:15:38,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:15:38,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:15:38,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:15:38,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:15:38,386 INFO L87 Difference]: Start difference. First operand 666 states and 1011 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 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 13:15:41,305 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 13:15:43,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:15:48,706 WARN L534 Checker$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 13:15:50,881 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:15:54,575 WARN L534 Checker$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 13:15:56,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:15:59,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:01,760 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:04,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:06,901 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:07,940 INFO L93 Difference]: Finished difference Result 4859 states and 7637 transitions. [2022-01-10 13:16:07,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 13:16:07,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 13:16:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:07,958 INFO L225 Difference]: With dead ends: 4859 [2022-01-10 13:16:07,958 INFO L226 Difference]: Without dead ends: 4261 [2022-01-10 13:16:07,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-01-10 13:16:07,961 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 1587 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 16 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:16:07,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 1993 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 953 Invalid, 10 Unknown, 0 Unchecked, 27.1s Time] [2022-01-10 13:16:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4261 states. [2022-01-10 13:16:08,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4261 to 1767. [2022-01-10 13:16:08,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 1.557757644394111) internal successors, (2751), 1766 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2751 transitions. [2022-01-10 13:16:08,691 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2751 transitions. Word has length 111 [2022-01-10 13:16:08,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:08,691 INFO L470 AbstractCegarLoop]: Abstraction has 1767 states and 2751 transitions. [2022-01-10 13:16:08,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 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 13:16:08,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2751 transitions. [2022-01-10 13:16:08,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 13:16:08,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:08,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:16:08,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:16:08,693 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:08,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:08,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1012055668, now seen corresponding path program 1 times [2022-01-10 13:16:08,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:08,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88353321] [2022-01-10 13:16:08,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:08,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:09,318 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 13:16:09,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:09,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88353321] [2022-01-10 13:16:09,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88353321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:09,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:09,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:16:09,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904945892] [2022-01-10 13:16:09,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:09,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:16:09,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:09,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:16:09,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:16:09,321 INFO L87 Difference]: Start difference. First operand 1767 states and 2751 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)