/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/array-examples/standard_init8_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:28:56,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:28:56,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:28:57,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 09:28:57,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:28:57,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:28:57,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:28:57,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:28:57,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:28:57,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:28:57,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:28:57,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:28:57,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:28:57,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:28:57,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:28:57,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:28:57,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 09:28:57,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 09:28:57,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 09:28:57,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 09:28:57,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 09:28:57,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 09:28:57,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 09:28:57,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 09:28:57,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 09:28:57,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 09:28:57,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 09:28:57,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 09:28:57,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 09:28:57,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 09:28:57,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:28:57,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:28:57,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:28:57,057 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 09:28:57,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:28:57,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:28:57,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:28:57,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:28:57,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:28:57,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:28:57,087 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:28:57,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:28:57,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:28:57,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:28:57,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:28:57,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:28:57,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:28:57,088 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:28:57,088 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:28:57,088 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:28:57,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:28:57,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:28:57,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:28:57,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:28:57,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:28:57,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:28:57,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:28:57,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:28:57,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:28:57,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:28:57,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:28:57,090 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:28:57,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:28:57,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:28:57,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:28:57,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:28:57,092 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:28:57,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:28:57,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:28:57,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:28:57,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:28:57,261 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:28:57,261 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:28:57,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init8_ground-2.i [2022-01-10 09:28:57,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c2abfbaa/090ed5b331dd4c38b4c0cd433f917e20/FLAGa6d89ea4b [2022-01-10 09:28:57,676 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:28:57,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init8_ground-2.i [2022-01-10 09:28:57,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c2abfbaa/090ed5b331dd4c38b4c0cd433f917e20/FLAGa6d89ea4b [2022-01-10 09:28:57,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c2abfbaa/090ed5b331dd4c38b4c0cd433f917e20 [2022-01-10 09:28:57,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:28:57,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:28:57,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:28:57,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:28:57,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:28:57,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:28:57" (1/1) ... [2022-01-10 09:28:57,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@becaac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57, skipping insertion in model container [2022-01-10 09:28:57,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:28:57" (1/1) ... [2022-01-10 09:28:57,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:28:57,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:28:57,854 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init8_ground-2.i[816,829] [2022-01-10 09:28:57,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:28:57,871 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:28:57,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init8_ground-2.i[816,829] [2022-01-10 09:28:57,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:28:57,894 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:28:57,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57 WrapperNode [2022-01-10 09:28:57,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:28:57,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:28:57,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:28:57,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:28:57,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57" (1/1) ... [2022-01-10 09:28:57,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57" (1/1) ... [2022-01-10 09:28:57,918 INFO L137 Inliner]: procedures = 17, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2022-01-10 09:28:57,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:28:57,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:28:57,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:28:57,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:28:57,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57" (1/1) ... [2022-01-10 09:28:57,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57" (1/1) ... [2022-01-10 09:28:57,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57" (1/1) ... [2022-01-10 09:28:57,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57" (1/1) ... [2022-01-10 09:28:57,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57" (1/1) ... [2022-01-10 09:28:57,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57" (1/1) ... [2022-01-10 09:28:57,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57" (1/1) ... [2022-01-10 09:28:57,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:28:57,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:28:57,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:28:57,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:28:57,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57" (1/1) ... [2022-01-10 09:28:57,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:28:57,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:28:57,972 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 09:28:57,987 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 09:28:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:28:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:28:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 09:28:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 09:28:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:28:58,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:28:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 09:28:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 09:28:58,050 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:28:58,051 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:28:58,195 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:28:58,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:28:58,199 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-10 09:28:58,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:28:58 BoogieIcfgContainer [2022-01-10 09:28:58,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:28:58,200 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:28:58,200 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:28:58,208 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:28:58,209 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:28:58" (1/1) ... [2022-01-10 09:28:58,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:28:58 BasicIcfg [2022-01-10 09:28:58,341 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:28:58,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:28:58,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:28:58,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:28:58,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:28:57" (1/4) ... [2022-01-10 09:28:58,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2419260d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:28:58, skipping insertion in model container [2022-01-10 09:28:58,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:28:57" (2/4) ... [2022-01-10 09:28:58,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2419260d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:28:58, skipping insertion in model container [2022-01-10 09:28:58,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:28:58" (3/4) ... [2022-01-10 09:28:58,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2419260d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:28:58, skipping insertion in model container [2022-01-10 09:28:58,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:28:58" (4/4) ... [2022-01-10 09:28:58,346 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-2.iTransformedIcfg [2022-01-10 09:28:58,365 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:28:58,365 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 09:28:58,402 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:28:58,409 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 09:28:58,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 09:28:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 27 states have internal predecessors, (46), 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 09:28:58,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 09:28:58,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:28:58,421 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] [2022-01-10 09:28:58,421 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:28:58,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:28:58,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1770509267, now seen corresponding path program 1 times [2022-01-10 09:28:58,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:28:58,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996618152] [2022-01-10 09:28:58,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:28:58,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:28:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:28:58,544 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 09:28:58,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:28:58,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996618152] [2022-01-10 09:28:58,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996618152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:28:58,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:28:58,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:28:58,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301090805] [2022-01-10 09:28:58,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:28:58,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:28:58,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:28:58,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:28:58,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:28:58,576 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 27 states have internal predecessors, (46), 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 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 09:28:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:28:58,598 INFO L93 Difference]: Finished difference Result 53 states and 87 transitions. [2022-01-10 09:28:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:28:58,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2022-01-10 09:28:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:28:58,605 INFO L225 Difference]: With dead ends: 53 [2022-01-10 09:28:58,605 INFO L226 Difference]: Without dead ends: 24 [2022-01-10 09:28:58,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:28:58,612 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:28:58,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:28:58,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-10 09:28:58,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-10 09:28:58,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 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 09:28:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-01-10 09:28:58,642 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 21 [2022-01-10 09:28:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:28:58,642 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-01-10 09:28:58,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 09:28:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2022-01-10 09:28:58,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 09:28:58,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:28:58,644 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] [2022-01-10 09:28:58,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:28:58,645 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:28:58,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:28:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash 777517275, now seen corresponding path program 1 times [2022-01-10 09:28:58,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:28:58,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90111561] [2022-01-10 09:28:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:28:58,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:28:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:28:58,812 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 09:28:58,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:28:58,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90111561] [2022-01-10 09:28:58,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90111561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:28:58,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:28:58,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 09:28:58,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583291587] [2022-01-10 09:28:58,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:28:58,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 09:28:58,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:28:58,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 09:28:58,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 09:28:58,816 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 09:28:58,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:28:58,876 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2022-01-10 09:28:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 09:28:58,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2022-01-10 09:28:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:28:58,877 INFO L225 Difference]: With dead ends: 53 [2022-01-10 09:28:58,877 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 09:28:58,880 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 09:28:58,881 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:28:58,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:28:58,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 09:28:58,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-01-10 09:28:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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 09:28:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-01-10 09:28:58,892 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 21 [2022-01-10 09:28:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:28:58,893 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-01-10 09:28:58,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 09:28:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-01-10 09:28:58,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 09:28:58,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:28:58,900 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] [2022-01-10 09:28:58,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 09:28:58,900 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:28:58,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:28:58,901 INFO L85 PathProgramCache]: Analyzing trace with hash -192732197, now seen corresponding path program 1 times [2022-01-10 09:28:58,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:28:58,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901870387] [2022-01-10 09:28:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:28:58,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:28:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:28:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 09:28:59,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:28:59,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901870387] [2022-01-10 09:28:59,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901870387] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:28:59,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121361972] [2022-01-10 09:28:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:28:59,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:28:59,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:28:59,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:28:59,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 09:28:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:28:59,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 09:28:59,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:28:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 09:28:59,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:28:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 09:28:59,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121361972] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:28:59,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 09:28:59,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 09:28:59,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918254073] [2022-01-10 09:28:59,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 09:28:59,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 09:28:59,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:28:59,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 09:28:59,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 09:28:59,469 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 09:28:59,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:28:59,913 INFO L93 Difference]: Finished difference Result 84 states and 123 transitions. [2022-01-10 09:28:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 09:28:59,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 29 [2022-01-10 09:28:59,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:28:59,914 INFO L225 Difference]: With dead ends: 84 [2022-01-10 09:28:59,914 INFO L226 Difference]: Without dead ends: 56 [2022-01-10 09:28:59,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 09:28:59,915 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 09:28:59,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 09:28:59,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-10 09:28:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-01-10 09:28:59,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 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 09:28:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-01-10 09:28:59,923 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 29 [2022-01-10 09:28:59,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:28:59,923 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-01-10 09:28:59,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 09:28:59,923 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-01-10 09:28:59,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 09:28:59,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:28:59,924 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:28:59,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 09:29:00,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:29:00,130 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:29:00,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:29:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1339298597, now seen corresponding path program 2 times [2022-01-10 09:29:00,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:29:00,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543627750] [2022-01-10 09:29:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:29:00,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:29:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:29:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-10 09:29:00,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:29:00,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543627750] [2022-01-10 09:29:00,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543627750] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:29:00,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500359683] [2022-01-10 09:29:00,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 09:29:00,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:29:00,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:29:00,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:29:00,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 09:29:00,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 09:29:00,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:29:00,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-10 09:29:00,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:29:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-01-10 09:29:22,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:29:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-10 09:29:23,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500359683] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:29:23,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 09:29:23,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2022-01-10 09:29:23,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736146818] [2022-01-10 09:29:23,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 09:29:23,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 09:29:23,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:29:23,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 09:29:23,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=175, Unknown=8, NotChecked=0, Total=272 [2022-01-10 09:29:23,954 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 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 09:29:39,332 WARN L228 SmtUtils]: Spent 8.98s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 09:29:47,484 WARN L228 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 46 DAG size of output: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 09:30:06,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:30:06,386 INFO L93 Difference]: Finished difference Result 148 states and 206 transitions. [2022-01-10 09:30:06,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 09:30:06,386 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 09:30:06,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:30:06,387 INFO L225 Difference]: With dead ends: 148 [2022-01-10 09:30:06,387 INFO L226 Difference]: Without dead ends: 99 [2022-01-10 09:30:06,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 58.3s TimeCoverageRelationStatistics Valid=202, Invalid=337, Unknown=13, NotChecked=0, Total=552 [2022-01-10 09:30:06,388 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-01-10 09:30:06,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 304 Invalid, 0 Unknown, 50 Unchecked, 6.8s Time] [2022-01-10 09:30:06,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-10 09:30:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-01-10 09:30:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0918367346938775) internal successors, (107), 98 states have internal predecessors, (107), 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 09:30:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2022-01-10 09:30:06,405 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 53 [2022-01-10 09:30:06,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:30:06,405 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2022-01-10 09:30:06,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 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 09:30:06,405 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2022-01-10 09:30:06,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 09:30:06,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:30:06,408 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:30:06,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 09:30:06,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 09:30:06,615 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:30:06,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:30:06,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1810875541, now seen corresponding path program 3 times [2022-01-10 09:30:06,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:30:06,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001988118] [2022-01-10 09:30:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:30:06,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:30:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:30:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-01-10 09:30:07,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:30:07,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001988118] [2022-01-10 09:30:07,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001988118] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:30:07,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111689596] [2022-01-10 09:30:07,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 09:30:07,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:30:07,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:30:07,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:30:07,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process