/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_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:00:13,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:00:13,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:00:13,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:00:13,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:00:13,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:00:13,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:00:13,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:00:13,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:00:13,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:00:13,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:00:13,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:00:13,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:00:13,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:00:13,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:00:13,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:00:13,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:00:13,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:00:13,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:00:13,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:00:13,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:00:13,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:00:13,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:00:13,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:00:13,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:00:13,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 19:00:13,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 19:00:13,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 19:00:13,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 19:00:13,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 19:00:13,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 19:00:13,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 19:00:13,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 19:00:13,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:00:13,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:00:13,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:00:13,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:00:13,751 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:00:13,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:00:13,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:00:13,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:00:13,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:00:13,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:00:13,753 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:00:13,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:00:13,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:00:13,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:00:13,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:00:13,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:00:13,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:00:13,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:00:13,754 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:00:13,754 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:00:13,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:00:13,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:00:13,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:00:13,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:00:13,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:00:13,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:00:13,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:00:13,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:00:13,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:00:13,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:00:13,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:00:13,756 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:00:13,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:00:13,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:00:13,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:00:13,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:00:13,757 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:00:13,757 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:00:13,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:00:13,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:00:14,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:00:14,001 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:00:14,002 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:00:14,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-10 19:00:14,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9307fca4/6e90905b47aa4079b46e8f9fbfab1bfb/FLAG6f26ae2fa [2022-01-10 19:00:14,434 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:00:14,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-10 19:00:14,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9307fca4/6e90905b47aa4079b46e8f9fbfab1bfb/FLAG6f26ae2fa [2022-01-10 19:00:14,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9307fca4/6e90905b47aa4079b46e8f9fbfab1bfb [2022-01-10 19:00:14,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:00:14,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:00:14,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:00:14,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:00:14,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:00:14,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:00:14" (1/1) ... [2022-01-10 19:00:14,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@220ccea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14, skipping insertion in model container [2022-01-10 19:00:14,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:00:14" (1/1) ... [2022-01-10 19:00:14,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:00:14,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:00:14,674 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.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[6780,6793] [2022-01-10 19:00:14,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:00:14,709 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:00:14,748 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.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[6780,6793] [2022-01-10 19:00:14,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:00:14,773 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:00:14,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14 WrapperNode [2022-01-10 19:00:14,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:00:14,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:00:14,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:00:14,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:00:14,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14" (1/1) ... [2022-01-10 19:00:14,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14" (1/1) ... [2022-01-10 19:00:14,828 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 516 [2022-01-10 19:00:14,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:00:14,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:00:14,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:00:14,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:00:14,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14" (1/1) ... [2022-01-10 19:00:14,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14" (1/1) ... [2022-01-10 19:00:14,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14" (1/1) ... [2022-01-10 19:00:14,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14" (1/1) ... [2022-01-10 19:00:14,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14" (1/1) ... [2022-01-10 19:00:14,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14" (1/1) ... [2022-01-10 19:00:14,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14" (1/1) ... [2022-01-10 19:00:14,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:00:14,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:00:14,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:00:14,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:00:14,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14" (1/1) ... [2022-01-10 19:00:14,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:00:14,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:00:14,902 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 19:00:14,911 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 19:00:14,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:00:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:00:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:00:14,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:00:15,002 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:00:15,003 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:00:15,390 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:00:15,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:00:15,395 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 19:00:15,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:00:15 BoogieIcfgContainer [2022-01-10 19:00:15,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:00:15,397 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:00:15,397 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:00:15,403 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:00:15,405 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:00:15" (1/1) ... [2022-01-10 19:00:15,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:00:15 BasicIcfg [2022-01-10 19:00:15,746 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:00:15,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:00:15,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:00:15,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:00:15,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:00:14" (1/4) ... [2022-01-10 19:00:15,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b5c54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:00:15, skipping insertion in model container [2022-01-10 19:00:15,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:00:14" (2/4) ... [2022-01-10 19:00:15,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b5c54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:00:15, skipping insertion in model container [2022-01-10 19:00:15,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:00:15" (3/4) ... [2022-01-10 19:00:15,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b5c54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:00:15, skipping insertion in model container [2022-01-10 19:00:15,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:00:15" (4/4) ... [2022-01-10 19:00:15,753 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 19:00:15,759 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:00:15,759 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 19:00:15,805 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:00:15,811 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 19:00:15,811 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 19:00:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 121 states have (on average 1.7520661157024793) internal successors, (212), 122 states have internal predecessors, (212), 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 19:00:15,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 19:00:15,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:00:15,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:00:15,830 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:00:15,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:00:15,835 INFO L85 PathProgramCache]: Analyzing trace with hash -641070806, now seen corresponding path program 1 times [2022-01-10 19:00:15,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:00:15,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564003243] [2022-01-10 19:00:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:00:15,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:00:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:00:16,321 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 19:00:16,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:00:16,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564003243] [2022-01-10 19:00:16,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564003243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:00:16,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:00:16,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:00:16,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394851132] [2022-01-10 19:00:16,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:00:16,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:00:16,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:00:16,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:00:16,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:00:16,355 INFO L87 Difference]: Start difference. First operand has 123 states, 121 states have (on average 1.7520661157024793) internal successors, (212), 122 states have internal predecessors, (212), 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 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:00:16,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:00:16,688 INFO L93 Difference]: Finished difference Result 243 states and 400 transitions. [2022-01-10 19:00:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:00:16,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 19:00:16,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:00:16,697 INFO L225 Difference]: With dead ends: 243 [2022-01-10 19:00:16,697 INFO L226 Difference]: Without dead ends: 183 [2022-01-10 19:00:16,699 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 19:00:16,701 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 102 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 19:00:16,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 440 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 19:00:16,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-01-10 19:00:16,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2022-01-10 19:00:16,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4444444444444444) internal successors, (260), 180 states have internal predecessors, (260), 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 19:00:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 260 transitions. [2022-01-10 19:00:16,776 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 260 transitions. Word has length 62 [2022-01-10 19:00:16,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:00:16,777 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 260 transitions. [2022-01-10 19:00:16,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:00:16,777 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 260 transitions. [2022-01-10 19:00:16,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 19:00:16,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:00:16,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:00:16,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:00:16,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:00:16,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:00:16,783 INFO L85 PathProgramCache]: Analyzing trace with hash -497729653, now seen corresponding path program 1 times [2022-01-10 19:00:16,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:00:16,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124370654] [2022-01-10 19:00:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:00:16,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:00:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:00:17,237 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 19:00:17,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:00:17,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124370654] [2022-01-10 19:00:17,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124370654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:00:17,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:00:17,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:00:17,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570768614] [2022-01-10 19:00:17,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:00:17,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:00:17,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:00:17,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:00:17,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:00:17,241 INFO L87 Difference]: Start difference. First operand 181 states and 260 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:00:19,604 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 19:00:22,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:00:24,496 WARN L534 Checker$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 19:00:28,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:00:31,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:00:31,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:00:31,343 INFO L93 Difference]: Finished difference Result 1102 states and 1678 transitions. [2022-01-10 19:00:31,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:00:31,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 19:00:31,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:00:31,350 INFO L225 Difference]: With dead ends: 1102 [2022-01-10 19:00:31,351 INFO L226 Difference]: Without dead ends: 955 [2022-01-10 19:00:31,352 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 19:00:31,353 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 866 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 17 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-01-10 19:00:31,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 1118 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 724 Invalid, 5 Unknown, 0 Unchecked, 13.6s Time] [2022-01-10 19:00:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-01-10 19:00:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 647. [2022-01-10 19:00:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.5123839009287925) internal successors, (977), 646 states have internal predecessors, (977), 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 19:00:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 977 transitions. [2022-01-10 19:00:31,517 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 977 transitions. Word has length 64 [2022-01-10 19:00:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:00:31,517 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 977 transitions. [2022-01-10 19:00:31,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:00:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 977 transitions. [2022-01-10 19:00:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 19:00:31,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:00:31,519 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 19:00:31,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:00:31,523 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:00:31,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:00:31,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1718243941, now seen corresponding path program 1 times [2022-01-10 19:00:31,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:00:31,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984888085] [2022-01-10 19:00:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:00:31,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:00:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:00:31,992 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 19:00:31,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:00:31,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984888085] [2022-01-10 19:00:31,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984888085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:00:31,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:00:31,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:00:31,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189211442] [2022-01-10 19:00:31,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:00:31,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:00:31,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:00:31,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:00:31,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:00:31,994 INFO L87 Difference]: Start difference. First operand 647 states and 977 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 19:00:34,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:00:37,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:00:41,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:00:43,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:00:46,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:00:46,008 INFO L93 Difference]: Finished difference Result 3767 states and 5801 transitions. [2022-01-10 19:00:46,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:00:46,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 19:00:46,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:00:46,018 INFO L225 Difference]: With dead ends: 3767 [2022-01-10 19:00:46,018 INFO L226 Difference]: Without dead ends: 3239 [2022-01-10 19:00:46,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 19:00:46,021 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 616 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-01-10 19:00:46,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1413 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 768 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2022-01-10 19:00:46,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states. [2022-01-10 19:00:46,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 2007. [2022-01-10 19:00:46,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 2006 states have (on average 1.528913260219342) internal successors, (3067), 2006 states have internal predecessors, (3067), 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 19:00:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 3067 transitions. [2022-01-10 19:00:46,669 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 3067 transitions. Word has length 65 [2022-01-10 19:00:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:00:46,669 INFO L470 AbstractCegarLoop]: Abstraction has 2007 states and 3067 transitions. [2022-01-10 19:00:46,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 19:00:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 3067 transitions. [2022-01-10 19:00:46,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 19:00:46,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:00:46,671 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 19:00:46,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:00:46,671 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:00:46,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:00:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash -348547514, now seen corresponding path program 1 times [2022-01-10 19:00:46,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:00:46,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7207617] [2022-01-10 19:00:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:00:46,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:00:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:00:47,038 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 19:00:47,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:00:47,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7207617] [2022-01-10 19:00:47,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7207617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:00:47,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:00:47,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:00:47,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290804544] [2022-01-10 19:00:47,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:00:47,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:00:47,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:00:47,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:00:47,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:00:47,040 INFO L87 Difference]: Start difference. First operand 2007 states and 3067 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 19:00:49,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:00:52,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:00:54,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:00:59,022 WARN L534 Checker$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 19:01:01,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:01:04,720 WARN L534 Checker$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 19:01:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:05,226 INFO L93 Difference]: Finished difference Result 8651 states and 13334 transitions. [2022-01-10 19:01:05,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:01:05,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 19:01:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:05,245 INFO L225 Difference]: With dead ends: 8651 [2022-01-10 19:01:05,245 INFO L226 Difference]: Without dead ends: 6775 [2022-01-10 19:01:05,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 19:01:05,249 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1068 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 22 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:05,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 935 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 620 Invalid, 6 Unknown, 0 Unchecked, 15.4s Time] [2022-01-10 19:01:05,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6775 states. [2022-01-10 19:01:06,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6775 to 3603. [2022-01-10 19:01:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 3602 states have (on average 1.5360910605219322) internal successors, (5533), 3602 states have internal predecessors, (5533), 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 19:01:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 5533 transitions. [2022-01-10 19:01:06,581 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 5533 transitions. Word has length 65 [2022-01-10 19:01:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:06,582 INFO L470 AbstractCegarLoop]: Abstraction has 3603 states and 5533 transitions. [2022-01-10 19:01:06,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 19:01:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 5533 transitions. [2022-01-10 19:01:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:01:06,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:06,583 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 19:01:06,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:01:06,583 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:06,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:06,583 INFO L85 PathProgramCache]: Analyzing trace with hash -372842836, now seen corresponding path program 1 times [2022-01-10 19:01:06,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:06,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121568276] [2022-01-10 19:01:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:06,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:06,848 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 19:01:06,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:06,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121568276] [2022-01-10 19:01:06,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121568276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:06,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:06,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 19:01:06,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160123496] [2022-01-10 19:01:06,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:06,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 19:01:06,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:06,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 19:01:06,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:01:06,849 INFO L87 Difference]: Start difference. First operand 3603 states and 5533 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 19:01:09,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:01:11,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:01:14,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:01:16,823 WARN L534 Checker$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 19:01:23,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:01:26,103 WARN L534 Checker$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 19:01:28,242 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 []