/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_SUM.epf -i ../../../trunk/examples/svcomp/seq-pthread/cs_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:50:53,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:50:53,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:50:53,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 06:50:53,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:50:53,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:50:53,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:50:53,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:50:53,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:50:53,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:50:53,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:50:53,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:50:53,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:50:53,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:50:53,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:50:53,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:50:53,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 06:50:53,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:50:53,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:50:53,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:50:53,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:50:53,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:50:53,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:50:53,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:50:53,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:50:53,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:50:53,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:50:53,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:50:53,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:50:53,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:50:53,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:50:53,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:50:53,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:50:53,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:50:53,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:50:53,840 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:50:53,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:50:53,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:50:53,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:50:53,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:50:53,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:50:53,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:50:53,841 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:50:53,841 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:50:53,841 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:50:53,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:50:53,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:50:53,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:50:53,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:50:53,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:50:53,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:50:53,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:50:53,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:50:53,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:50:53,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:50:53,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:50:53,843 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:50:53,843 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:50:53,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:50:53,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:50:53,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:50:53,843 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:50:53,843 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:50:53,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:50:54,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:50:54,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:50:54,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:50:54,019 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:50:54,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_szymanski.i [2022-01-11 06:50:54,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0d5afb82/fcfb02576b914aefb76aa3495913e64c/FLAGedcf2666d [2022-01-11 06:50:54,503 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:50:54,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_szymanski.i [2022-01-11 06:50:54,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0d5afb82/fcfb02576b914aefb76aa3495913e64c/FLAGedcf2666d [2022-01-11 06:50:54,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0d5afb82/fcfb02576b914aefb76aa3495913e64c [2022-01-11 06:50:54,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:50:54,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:50:54,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:50:54,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:50:54,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:50:54,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:50:54" (1/1) ... [2022-01-11 06:50:54,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553b9bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:54, skipping insertion in model container [2022-01-11 06:50:54,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:50:54" (1/1) ... [2022-01-11 06:50:54,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:50:54,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:50:54,863 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-pthread/cs_szymanski.i[23606,23619] [2022-01-11 06:50:54,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:50:54,989 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:50:55,016 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-pthread/cs_szymanski.i[23606,23619] [2022-01-11 06:50:55,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:50:55,122 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:50:55,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:55 WrapperNode [2022-01-11 06:50:55,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:50:55,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:50:55,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:50:55,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:50:55,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:55" (1/1) ... [2022-01-11 06:50:55,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:55" (1/1) ... [2022-01-11 06:50:55,200 INFO L137 Inliner]: procedures = 149, calls = 289, calls flagged for inlining = 78, calls inlined = 75, statements flattened = 1092 [2022-01-11 06:50:55,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:50:55,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:50:55,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:50:55,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:50:55,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:55" (1/1) ... [2022-01-11 06:50:55,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:55" (1/1) ... [2022-01-11 06:50:55,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:55" (1/1) ... [2022-01-11 06:50:55,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:55" (1/1) ... [2022-01-11 06:50:55,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:55" (1/1) ... [2022-01-11 06:50:55,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:55" (1/1) ... [2022-01-11 06:50:55,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:55" (1/1) ... [2022-01-11 06:50:55,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:50:55,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:50:55,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:50:55,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:50:55,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:55" (1/1) ... [2022-01-11 06:50:55,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:50:55,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:50:55,317 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) [2022-01-11 06:50:55,335 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 [2022-01-11 06:50:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-01-11 06:50:55,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 06:50:55,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:50:55,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 06:50:55,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-11 06:50:55,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-11 06:50:55,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-01-11 06:50:55,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 06:50:55,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 06:50:55,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-11 06:50:55,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:50:55,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-11 06:50:55,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:50:55,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:50:55,506 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:50:55,507 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:50:59,434 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:50:59,441 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:50:59,441 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 06:50:59,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:50:59 BoogieIcfgContainer [2022-01-11 06:50:59,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:50:59,443 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:50:59,443 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:50:59,447 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:50:59,449 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:50:59" (1/1) ... [2022-01-11 06:50:59,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:50:59 BasicIcfg [2022-01-11 06:50:59,745 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:50:59,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:50:59,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:50:59,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:50:59,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:50:54" (1/4) ... [2022-01-11 06:50:59,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4753323b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:50:59, skipping insertion in model container [2022-01-11 06:50:59,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:50:55" (2/4) ... [2022-01-11 06:50:59,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4753323b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:50:59, skipping insertion in model container [2022-01-11 06:50:59,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:50:59" (3/4) ... [2022-01-11 06:50:59,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4753323b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:50:59, skipping insertion in model container [2022-01-11 06:50:59,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:50:59" (4/4) ... [2022-01-11 06:50:59,757 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_szymanski.iTransformedIcfg [2022-01-11 06:50:59,761 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:50:59,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:50:59,806 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:50:59,811 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 [2022-01-11 06:50:59,812 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:50:59,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 207 states have (on average 1.536231884057971) internal successors, (318), 208 states have internal predecessors, (318), 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) [2022-01-11 06:50:59,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-11 06:50:59,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:50:59,839 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] [2022-01-11 06:50:59,840 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:50:59,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:50:59,843 INFO L85 PathProgramCache]: Analyzing trace with hash 478971986, now seen corresponding path program 1 times [2022-01-11 06:50:59,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:50:59,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110203953] [2022-01-11 06:50:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:50:59,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:51:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:51:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:51:00,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:51:00,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110203953] [2022-01-11 06:51:00,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110203953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:51:00,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:51:00,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:51:00,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553168180] [2022-01-11 06:51:00,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:51:00,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 06:51:00,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:51:00,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 06:51:00,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:51:00,485 INFO L87 Difference]: Start difference. First operand has 209 states, 207 states have (on average 1.536231884057971) internal successors, (318), 208 states have internal predecessors, (318), 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 24.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2022-01-11 06:51:00,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:51:00,518 INFO L93 Difference]: Finished difference Result 416 states and 634 transitions. [2022-01-11 06:51:00,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 06:51:00,520 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 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 48 [2022-01-11 06:51:00,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:51:00,527 INFO L225 Difference]: With dead ends: 416 [2022-01-11 06:51:00,527 INFO L226 Difference]: Without dead ends: 205 [2022-01-11 06:51:00,530 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 [2022-01-11 06:51:00,584 INFO L933 BasicCegarLoop]: 276 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, 276 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 [2022-01-11 06:51:00,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:51:00,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-01-11 06:51:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-01-11 06:51:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.3333333333333333) internal successors, (272), 204 states have internal predecessors, (272), 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) [2022-01-11 06:51:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 272 transitions. [2022-01-11 06:51:00,618 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 272 transitions. Word has length 48 [2022-01-11 06:51:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:51:00,618 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 272 transitions. [2022-01-11 06:51:00,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2022-01-11 06:51:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 272 transitions. [2022-01-11 06:51:00,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-11 06:51:00,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:51:00,622 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] [2022-01-11 06:51:00,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:51:00,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:51:00,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:51:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash -666758623, now seen corresponding path program 1 times [2022-01-11 06:51:00,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:51:00,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366522561] [2022-01-11 06:51:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:51:00,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:51:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:51:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:51:03,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:51:03,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366522561] [2022-01-11 06:51:03,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366522561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:51:03,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:51:03,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:51:03,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253205010] [2022-01-11 06:51:03,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:51:03,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:51:03,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:51:03,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:51:03,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:51:03,261 INFO L87 Difference]: Start difference. First operand 205 states and 272 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-01-11 06:51:03,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:51:03,382 INFO L93 Difference]: Finished difference Result 374 states and 493 transitions. [2022-01-11 06:51:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:51:03,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-01-11 06:51:03,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:51:03,384 INFO L225 Difference]: With dead ends: 374 [2022-01-11 06:51:03,384 INFO L226 Difference]: Without dead ends: 322 [2022-01-11 06:51:03,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:51:03,386 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 213 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:51:03,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 919 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:51:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-01-11 06:51:03,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2022-01-11 06:51:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.3457943925233644) internal successors, (432), 321 states have internal predecessors, (432), 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) [2022-01-11 06:51:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 432 transitions. [2022-01-11 06:51:03,398 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 432 transitions. Word has length 48 [2022-01-11 06:51:03,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:51:03,399 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 432 transitions. [2022-01-11 06:51:03,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-01-11 06:51:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 432 transitions. [2022-01-11 06:51:03,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 06:51:03,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:51:03,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:51:03,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:51:03,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:51:03,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:51:03,402 INFO L85 PathProgramCache]: Analyzing trace with hash 174361051, now seen corresponding path program 1 times [2022-01-11 06:51:03,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:51:03,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975815905] [2022-01-11 06:51:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:51:03,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:51:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:51:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:51:04,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:51:04,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975815905] [2022-01-11 06:51:04,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975815905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:51:04,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:51:04,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:51:04,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680180373] [2022-01-11 06:51:04,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:51:04,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:51:04,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:51:04,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:51:04,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:51:04,602 INFO L87 Difference]: Start difference. First operand 322 states and 432 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:51:04,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:51:04,913 INFO L93 Difference]: Finished difference Result 653 states and 875 transitions. [2022-01-11 06:51:04,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:51:04,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-11 06:51:04,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:51:04,915 INFO L225 Difference]: With dead ends: 653 [2022-01-11 06:51:04,915 INFO L226 Difference]: Without dead ends: 346 [2022-01-11 06:51:04,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:51:04,917 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 38 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:51:04,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 509 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 06:51:04,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-01-11 06:51:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2022-01-11 06:51:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.336231884057971) internal successors, (461), 345 states have internal predecessors, (461), 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) [2022-01-11 06:51:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 461 transitions. [2022-01-11 06:51:04,927 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 461 transitions. Word has length 81 [2022-01-11 06:51:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:51:04,927 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 461 transitions. [2022-01-11 06:51:04,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:51:04,927 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 461 transitions. [2022-01-11 06:51:05,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 06:51:05,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:51:05,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:51:05,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:51:05,005 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:51:05,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:51:05,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1128589946, now seen corresponding path program 1 times [2022-01-11 06:51:05,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:51:05,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942329076] [2022-01-11 06:51:05,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:51:05,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:51:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:51:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:51:06,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:51:06,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942329076] [2022-01-11 06:51:06,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942329076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:51:06,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:51:06,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:51:06,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110485007] [2022-01-11 06:51:06,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:51:06,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:51:06,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:51:06,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:51:06,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:51:06,645 INFO L87 Difference]: Start difference. First operand 346 states and 461 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:51:07,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:51:07,052 INFO L93 Difference]: Finished difference Result 867 states and 1127 transitions. [2022-01-11 06:51:07,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:51:07,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-11 06:51:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:51:07,054 INFO L225 Difference]: With dead ends: 867 [2022-01-11 06:51:07,054 INFO L226 Difference]: Without dead ends: 541 [2022-01-11 06:51:07,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:51:07,056 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 457 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 06:51:07,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 610 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 06:51:07,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-11 06:51:07,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 415. [2022-01-11 06:51:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.2681159420289856) internal successors, (525), 414 states have internal predecessors, (525), 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) [2022-01-11 06:51:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 525 transitions. [2022-01-11 06:51:07,070 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 525 transitions. Word has length 81 [2022-01-11 06:51:07,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:51:07,071 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 525 transitions. [2022-01-11 06:51:07,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:51:07,071 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 525 transitions. [2022-01-11 06:51:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 06:51:07,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:51:07,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:51:07,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:51:07,072 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:51:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:51:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1423082199, now seen corresponding path program 1 times [2022-01-11 06:51:07,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:51:07,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165054856] [2022-01-11 06:51:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:51:07,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:51:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:51:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:51:08,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:51:08,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165054856] [2022-01-11 06:51:08,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165054856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:51:08,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:51:08,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:51:08,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942417835] [2022-01-11 06:51:08,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:51:08,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:51:08,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:51:08,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:51:08,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:51:08,626 INFO L87 Difference]: Start difference. First operand 415 states and 525 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:51:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:51:09,196 INFO L93 Difference]: Finished difference Result 820 states and 1038 transitions. [2022-01-11 06:51:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:51:09,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-11 06:51:09,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:51:09,199 INFO L225 Difference]: With dead ends: 820 [2022-01-11 06:51:09,199 INFO L226 Difference]: Without dead ends: 461 [2022-01-11 06:51:09,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:51:09,202 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 89 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 06:51:09,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 737 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 06:51:09,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-01-11 06:51:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2022-01-11 06:51:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.2543478260869565) internal successors, (577), 460 states have internal predecessors, (577), 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) [2022-01-11 06:51:09,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 577 transitions. [2022-01-11 06:51:09,215 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 577 transitions. Word has length 81 [2022-01-11 06:51:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:51:09,216 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 577 transitions. [2022-01-11 06:51:09,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:51:09,216 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 577 transitions. [2022-01-11 06:51:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 06:51:09,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:51:09,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:51:09,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:51:09,218 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:51:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:51:09,219 INFO L85 PathProgramCache]: Analyzing trace with hash -384765322, now seen corresponding path program 1 times [2022-01-11 06:51:09,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:51:09,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746211382] [2022-01-11 06:51:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:51:09,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:51:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:51:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:51:45,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:51:45,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746211382] [2022-01-11 06:51:45,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746211382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:51:45,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:51:45,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:51:45,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797685280] [2022-01-11 06:51:45,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:51:45,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:51:45,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:51:45,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:51:45,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:51:45,033 INFO L87 Difference]: Start difference. First operand 461 states and 577 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:51:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:51:45,111 INFO L93 Difference]: Finished difference Result 920 states and 1152 transitions. [2022-01-11 06:51:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:51:45,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-11 06:51:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:51:45,113 INFO L225 Difference]: With dead ends: 920 [2022-01-11 06:51:45,113 INFO L226 Difference]: Without dead ends: 465 [2022-01-11 06:51:45,114 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 [2022-01-11 06:51:45,116 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 4 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:51:45,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 532 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:51:45,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-01-11 06:51:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 462. [2022-01-11 06:51:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.2537960954446854) internal successors, (578), 461 states have internal predecessors, (578), 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) [2022-01-11 06:51:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 578 transitions. [2022-01-11 06:51:45,129 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 578 transitions. Word has length 81 [2022-01-11 06:51:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:51:45,129 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 578 transitions. [2022-01-11 06:51:45,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:51:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 578 transitions. [2022-01-11 06:51:45,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 06:51:45,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:51:45,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:51:45,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:51:45,135 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:51:45,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:51:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash -581136099, now seen corresponding path program 1 times [2022-01-11 06:51:45,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:51:45,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738547194] [2022-01-11 06:51:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:51:45,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms