/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_safe-12.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 03:25:34,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 03:25:34,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 03:25:34,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 03:25:34,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 03:25:34,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 03:25:34,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 03:25:34,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 03:25:34,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 03:25:34,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 03:25:34,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 03:25:34,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 03:25:34,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 03:25:34,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 03:25:34,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 03:25:34,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 03:25:34,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 03:25:34,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 03:25:34,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 03:25:34,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 03:25:34,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 03:25:34,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 03:25:34,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 03:25:34,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 03:25:34,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 03:25:34,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 03:25:34,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 03:25:34,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 03:25:34,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 03:25:34,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 03:25:34,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 03:25:34,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 03:25:34,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 03:25:34,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 03:25:34,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 03:25:34,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 03:25:34,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 03:25:34,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 03:25:34,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 03:25:34,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 03:25:34,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 03:25:34,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf [2022-01-19 03:25:34,177 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 03:25:34,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 03:25:34,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 03:25:34,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 03:25:34,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 03:25:34,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 03:25:34,178 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 03:25:34,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 03:25:34,179 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 03:25:34,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 03:25:34,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 03:25:34,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 03:25:34,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 03:25:34,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 03:25:34,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 03:25:34,179 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 03:25:34,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 03:25:34,180 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 03:25:34,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 03:25:34,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 03:25:34,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 03:25:34,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 03:25:34,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 03:25:34,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 03:25:34,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 03:25:34,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 03:25:34,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 03:25:34,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 03:25:34,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 03:25:34,181 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 03:25:34,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 03:25:34,181 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 03:25:34,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 03:25:34,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 03:25:34,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 03:25:34,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 03:25:34,381 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 03:25:34,381 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 03:25:34,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-12.i [2022-01-19 03:25:34,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b24e7ffd6/30541b9d543c47ffb85aea05d186d2fb/FLAG46dc00654 [2022-01-19 03:25:34,823 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 03:25:34,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-12.i [2022-01-19 03:25:34,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b24e7ffd6/30541b9d543c47ffb85aea05d186d2fb/FLAG46dc00654 [2022-01-19 03:25:34,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b24e7ffd6/30541b9d543c47ffb85aea05d186d2fb [2022-01-19 03:25:34,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 03:25:34,842 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 03:25:34,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 03:25:34,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 03:25:34,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 03:25:34,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 03:25:34" (1/1) ... [2022-01-19 03:25:34,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1273a975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:34, skipping insertion in model container [2022-01-19 03:25:34,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 03:25:34" (1/1) ... [2022-01-19 03:25:34,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 03:25:34,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 03:25:35,081 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-12.i[30815,30828] [2022-01-19 03:25:35,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 03:25:35,089 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 03:25:35,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-12.i[30815,30828] [2022-01-19 03:25:35,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 03:25:35,149 INFO L208 MainTranslator]: Completed translation [2022-01-19 03:25:35,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:35 WrapperNode [2022-01-19 03:25:35,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 03:25:35,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 03:25:35,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 03:25:35,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 03:25:35,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:35" (1/1) ... [2022-01-19 03:25:35,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:35" (1/1) ... [2022-01-19 03:25:35,176 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-01-19 03:25:35,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 03:25:35,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 03:25:35,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 03:25:35,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 03:25:35,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:35" (1/1) ... [2022-01-19 03:25:35,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:35" (1/1) ... [2022-01-19 03:25:35,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:35" (1/1) ... [2022-01-19 03:25:35,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:35" (1/1) ... [2022-01-19 03:25:35,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:35" (1/1) ... [2022-01-19 03:25:35,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:35" (1/1) ... [2022-01-19 03:25:35,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:35" (1/1) ... [2022-01-19 03:25:35,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 03:25:35,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 03:25:35,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 03:25:35,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 03:25:35,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:35" (1/1) ... [2022-01-19 03:25:35,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 03:25:35,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 03:25:35,226 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) [2022-01-19 03:25:35,236 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 [2022-01-19 03:25:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-01-19 03:25:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-01-19 03:25:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-01-19 03:25:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-01-19 03:25:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 03:25:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 03:25:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 03:25:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 03:25:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 03:25:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 03:25:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 03:25:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 03:25:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 03:25:35,270 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 03:25:35,391 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 03:25:35,392 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 03:25:35,529 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 03:25:35,534 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 03:25:35,535 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 03:25:35,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 03:25:35 BoogieIcfgContainer [2022-01-19 03:25:35,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 03:25:35,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 03:25:35,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 03:25:35,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 03:25:35,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 03:25:34" (1/3) ... [2022-01-19 03:25:35,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59652dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 03:25:35, skipping insertion in model container [2022-01-19 03:25:35,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:25:35" (2/3) ... [2022-01-19 03:25:35,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59652dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 03:25:35, skipping insertion in model container [2022-01-19 03:25:35,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 03:25:35" (3/3) ... [2022-01-19 03:25:35,543 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_safe-12.i [2022-01-19 03:25:35,547 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 03:25:35,547 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 03:25:35,547 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 03:25:35,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,593 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,593 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,594 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,594 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,594 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,595 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,595 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,595 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,595 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,595 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,595 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,595 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,596 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,597 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,597 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,597 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,598 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,598 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,598 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,598 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,598 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,598 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,598 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,599 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,599 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,600 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,600 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,601 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,601 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,602 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,602 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,602 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,602 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,605 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,606 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,606 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,606 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,606 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,608 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,608 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,608 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,608 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,609 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:25:35,609 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 03:25:35,654 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 03:25:35,658 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=false, 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 [2022-01-19 03:25:35,658 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 03:25:35,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 202 flow [2022-01-19 03:25:35,725 INFO L129 PetriNetUnfolder]: 7/94 cut-off events. [2022-01-19 03:25:35,725 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 03:25:35,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-01-19 03:25:35,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 202 flow [2022-01-19 03:25:35,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 94 transitions, 194 flow [2022-01-19 03:25:35,747 INFO L129 PetriNetUnfolder]: 7/85 cut-off events. [2022-01-19 03:25:35,747 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 03:25:35,748 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 03:25:35,748 INFO L254 CegarLoopForPetriNet]: 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] [2022-01-19 03:25:35,749 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 03:25:35,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 03:25:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1927097680, now seen corresponding path program 1 times [2022-01-19 03:25:35,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 03:25:35,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776813967] [2022-01-19 03:25:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:25:35,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 03:25:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:25:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:35,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 03:25:35,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776813967] [2022-01-19 03:25:35,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776813967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 03:25:35,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 03:25:35,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 03:25:35,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241013596] [2022-01-19 03:25:35,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 03:25:35,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 03:25:35,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 03:25:35,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 03:25:35,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 03:25:35,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 96 [2022-01-19 03:25:35,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 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) [2022-01-19 03:25:35,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 03:25:35,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 96 [2022-01-19 03:25:35,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 03:25:36,035 INFO L129 PetriNetUnfolder]: 3/89 cut-off events. [2022-01-19 03:25:36,035 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 03:25:36,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 3/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 5/90 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2022-01-19 03:25:36,037 INFO L132 encePairwiseOnDemand]: 92/96 looper letters, 2 selfloop transitions, 0 changer transitions 0/89 dead transitions. [2022-01-19 03:25:36,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 188 flow [2022-01-19 03:25:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 03:25:36,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 03:25:36,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 184 transitions. [2022-01-19 03:25:36,050 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2022-01-19 03:25:36,054 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 184 transitions. [2022-01-19 03:25:36,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 184 transitions. [2022-01-19 03:25:36,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 03:25:36,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 184 transitions. [2022-01-19 03:25:36,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 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) [2022-01-19 03:25:36,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-01-19 03:25:36,069 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-01-19 03:25:36,070 INFO L186 Difference]: Start difference. First operand has 94 places, 94 transitions, 194 flow. Second operand 2 states and 184 transitions. [2022-01-19 03:25:36,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 188 flow [2022-01-19 03:25:36,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 03:25:36,076 INFO L242 Difference]: Finished difference. Result has 92 places, 89 transitions, 182 flow [2022-01-19 03:25:36,077 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2022-01-19 03:25:36,081 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2022-01-19 03:25:36,081 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 182 flow [2022-01-19 03:25:36,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 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) [2022-01-19 03:25:36,082 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 03:25:36,082 INFO L254 CegarLoopForPetriNet]: 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] [2022-01-19 03:25:36,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 03:25:36,082 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 03:25:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 03:25:36,083 INFO L85 PathProgramCache]: Analyzing trace with hash 560415153, now seen corresponding path program 1 times [2022-01-19 03:25:36,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 03:25:36,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721494428] [2022-01-19 03:25:36,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:25:36,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 03:25:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:25:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:36,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 03:25:36,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721494428] [2022-01-19 03:25:36,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721494428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 03:25:36,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 03:25:36,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 03:25:36,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821287465] [2022-01-19 03:25:36,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 03:25:36,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 03:25:36,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 03:25:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 03:25:36,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 03:25:36,175 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 96 [2022-01-19 03:25:36,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2022-01-19 03:25:36,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 03:25:36,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 96 [2022-01-19 03:25:36,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 03:25:36,211 INFO L129 PetriNetUnfolder]: 3/95 cut-off events. [2022-01-19 03:25:36,211 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 03:25:36,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 95 events. 3/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2022-01-19 03:25:36,214 INFO L132 encePairwiseOnDemand]: 93/96 looper letters, 9 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2022-01-19 03:25:36,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 210 flow [2022-01-19 03:25:36,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 03:25:36,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 03:25:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2022-01-19 03:25:36,218 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.90625 [2022-01-19 03:25:36,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2022-01-19 03:25:36,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2022-01-19 03:25:36,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 03:25:36,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2022-01-19 03:25:36,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2022-01-19 03:25:36,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2022-01-19 03:25:36,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2022-01-19 03:25:36,222 INFO L186 Difference]: Start difference. First operand has 92 places, 89 transitions, 182 flow. Second operand 3 states and 261 transitions. [2022-01-19 03:25:36,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 210 flow [2022-01-19 03:25:36,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 03:25:36,225 INFO L242 Difference]: Finished difference. Result has 95 places, 90 transitions, 194 flow [2022-01-19 03:25:36,225 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2022-01-19 03:25:36,227 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 1 predicate places. [2022-01-19 03:25:36,227 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 194 flow [2022-01-19 03:25:36,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2022-01-19 03:25:36,227 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 03:25:36,227 INFO L254 CegarLoopForPetriNet]: 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] [2022-01-19 03:25:36,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 03:25:36,227 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 03:25:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 03:25:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash -951035470, now seen corresponding path program 1 times [2022-01-19 03:25:36,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 03:25:36,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875998371] [2022-01-19 03:25:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:25:36,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 03:25:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:25:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:36,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 03:25:36,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875998371] [2022-01-19 03:25:36,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875998371] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 03:25:36,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108111084] [2022-01-19 03:25:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:25:36,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 03:25:36,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 03:25:36,293 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) [2022-01-19 03:25:36,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 03:25:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:25:36,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-19 03:25:36,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 03:25:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:36,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 03:25:36,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:36,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108111084] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 03:25:36,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 03:25:36,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-19 03:25:36,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038062589] [2022-01-19 03:25:36,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 03:25:36,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 03:25:36,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 03:25:36,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 03:25:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-19 03:25:36,640 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 96 [2022-01-19 03:25:36,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 194 flow. Second operand has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2022-01-19 03:25:36,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 03:25:36,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 96 [2022-01-19 03:25:36,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 03:25:36,708 INFO L129 PetriNetUnfolder]: 3/104 cut-off events. [2022-01-19 03:25:36,708 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 03:25:36,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 104 events. 3/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 133. Up to 6 conditions per place. [2022-01-19 03:25:36,709 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 10 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2022-01-19 03:25:36,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 250 flow [2022-01-19 03:25:36,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 03:25:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 03:25:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 750 transitions. [2022-01-19 03:25:36,725 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8680555555555556 [2022-01-19 03:25:36,725 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 750 transitions. [2022-01-19 03:25:36,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 750 transitions. [2022-01-19 03:25:36,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 03:25:36,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 750 transitions. [2022-01-19 03:25:36,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.33333333333333) internal successors, (750), 9 states have internal predecessors, (750), 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) [2022-01-19 03:25:36,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2022-01-19 03:25:36,728 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2022-01-19 03:25:36,728 INFO L186 Difference]: Start difference. First operand has 95 places, 90 transitions, 194 flow. Second operand 9 states and 750 transitions. [2022-01-19 03:25:36,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 250 flow [2022-01-19 03:25:36,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 03:25:36,730 INFO L242 Difference]: Finished difference. Result has 105 places, 96 transitions, 242 flow [2022-01-19 03:25:36,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=242, PETRI_PLACES=105, PETRI_TRANSITIONS=96} [2022-01-19 03:25:36,731 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2022-01-19 03:25:36,731 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 96 transitions, 242 flow [2022-01-19 03:25:36,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2022-01-19 03:25:36,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 03:25:36,732 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 03:25:36,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 03:25:36,951 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 [2022-01-19 03:25:36,952 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 03:25:36,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 03:25:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1666707666, now seen corresponding path program 2 times [2022-01-19 03:25:36,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 03:25:36,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120999482] [2022-01-19 03:25:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:25:36,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 03:25:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:25:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:37,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 03:25:37,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120999482] [2022-01-19 03:25:37,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120999482] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 03:25:37,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774573237] [2022-01-19 03:25:37,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 03:25:37,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 03:25:37,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 03:25:37,051 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) [2022-01-19 03:25:37,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 03:25:37,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 03:25:37,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 03:25:37,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 03:25:37,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 03:25:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:37,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 03:25:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:37,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774573237] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 03:25:37,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 03:25:37,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-19 03:25:37,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096141860] [2022-01-19 03:25:37,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 03:25:37,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 03:25:37,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 03:25:37,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 03:25:37,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-01-19 03:25:37,369 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 96 [2022-01-19 03:25:37,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 96 transitions, 242 flow. Second operand has 18 states, 18 states have (on average 83.0) internal successors, (1494), 18 states have internal predecessors, (1494), 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) [2022-01-19 03:25:37,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 03:25:37,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 96 [2022-01-19 03:25:37,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 03:25:37,513 INFO L129 PetriNetUnfolder]: 3/132 cut-off events. [2022-01-19 03:25:37,513 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-01-19 03:25:37,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 132 events. 3/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 4/133 useless extension candidates. Maximal degree in co-relation 224. Up to 11 conditions per place. [2022-01-19 03:25:37,516 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 14 selfloop transitions, 21 changer transitions 0/114 dead transitions. [2022-01-19 03:25:37,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 114 transitions, 408 flow [2022-01-19 03:25:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 03:25:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 03:25:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1740 transitions. [2022-01-19 03:25:37,519 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8630952380952381 [2022-01-19 03:25:37,519 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1740 transitions. [2022-01-19 03:25:37,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1740 transitions. [2022-01-19 03:25:37,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 03:25:37,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1740 transitions. [2022-01-19 03:25:37,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 82.85714285714286) internal successors, (1740), 21 states have internal predecessors, (1740), 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) [2022-01-19 03:25:37,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 96.0) internal successors, (2112), 22 states have internal predecessors, (2112), 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) [2022-01-19 03:25:37,526 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 96.0) internal successors, (2112), 22 states have internal predecessors, (2112), 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) [2022-01-19 03:25:37,526 INFO L186 Difference]: Start difference. First operand has 105 places, 96 transitions, 242 flow. Second operand 21 states and 1740 transitions. [2022-01-19 03:25:37,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 114 transitions, 408 flow [2022-01-19 03:25:37,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 114 transitions, 394 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-19 03:25:37,532 INFO L242 Difference]: Finished difference. Result has 129 places, 109 transitions, 366 flow [2022-01-19 03:25:37,532 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=366, PETRI_PLACES=129, PETRI_TRANSITIONS=109} [2022-01-19 03:25:37,534 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 35 predicate places. [2022-01-19 03:25:37,534 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 109 transitions, 366 flow [2022-01-19 03:25:37,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 83.0) internal successors, (1494), 18 states have internal predecessors, (1494), 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) [2022-01-19 03:25:37,534 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 03:25:37,535 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 03:25:37,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-19 03:25:37,749 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 [2022-01-19 03:25:37,749 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 03:25:37,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 03:25:37,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1283180782, now seen corresponding path program 3 times [2022-01-19 03:25:37,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 03:25:37,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348605406] [2022-01-19 03:25:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:25:37,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 03:25:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:25:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:37,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 03:25:37,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348605406] [2022-01-19 03:25:37,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348605406] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 03:25:37,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284922833] [2022-01-19 03:25:37,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 03:25:37,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 03:25:37,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 03:25:37,944 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) [2022-01-19 03:25:37,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 03:25:38,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-01-19 03:25:38,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 03:25:38,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 03:25:38,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 03:25:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:38,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 03:25:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:38,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284922833] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 03:25:38,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 03:25:38,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-01-19 03:25:38,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094881151] [2022-01-19 03:25:38,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 03:25:38,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 03:25:38,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 03:25:38,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 03:25:38,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 03:25:38,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 96 [2022-01-19 03:25:38,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 109 transitions, 366 flow. Second operand has 34 states, 34 states have (on average 83.0) internal successors, (2822), 34 states have internal predecessors, (2822), 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) [2022-01-19 03:25:38,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 03:25:38,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 96 [2022-01-19 03:25:38,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 03:25:38,900 INFO L129 PetriNetUnfolder]: 3/188 cut-off events. [2022-01-19 03:25:38,900 INFO L130 PetriNetUnfolder]: For 262/262 co-relation queries the response was YES. [2022-01-19 03:25:38,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 188 events. 3/188 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 8/193 useless extension candidates. Maximal degree in co-relation 438. Up to 27 conditions per place. [2022-01-19 03:25:38,902 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 22 selfloop transitions, 45 changer transitions 0/146 dead transitions. [2022-01-19 03:25:38,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 146 transitions, 788 flow [2022-01-19 03:25:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 03:25:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 03:25:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3720 transitions. [2022-01-19 03:25:38,912 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8611111111111112 [2022-01-19 03:25:38,913 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3720 transitions. [2022-01-19 03:25:38,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3720 transitions. [2022-01-19 03:25:38,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 03:25:38,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3720 transitions. [2022-01-19 03:25:38,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 82.66666666666667) internal successors, (3720), 45 states have internal predecessors, (3720), 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) [2022-01-19 03:25:38,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 96.0) internal successors, (4416), 46 states have internal predecessors, (4416), 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) [2022-01-19 03:25:38,931 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 96.0) internal successors, (4416), 46 states have internal predecessors, (4416), 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) [2022-01-19 03:25:38,931 INFO L186 Difference]: Start difference. First operand has 129 places, 109 transitions, 366 flow. Second operand 45 states and 3720 transitions. [2022-01-19 03:25:38,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 146 transitions, 788 flow [2022-01-19 03:25:38,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 146 transitions, 748 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-01-19 03:25:38,939 INFO L242 Difference]: Finished difference. Result has 176 places, 134 transitions, 644 flow [2022-01-19 03:25:38,939 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=644, PETRI_PLACES=176, PETRI_TRANSITIONS=134} [2022-01-19 03:25:38,941 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 82 predicate places. [2022-01-19 03:25:38,942 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 134 transitions, 644 flow [2022-01-19 03:25:38,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 83.0) internal successors, (2822), 34 states have internal predecessors, (2822), 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) [2022-01-19 03:25:38,943 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 03:25:38,943 INFO L254 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 03:25:38,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 03:25:39,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 03:25:39,152 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 03:25:39,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 03:25:39,152 INFO L85 PathProgramCache]: Analyzing trace with hash 835265426, now seen corresponding path program 4 times [2022-01-19 03:25:39,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 03:25:39,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677273049] [2022-01-19 03:25:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:25:39,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 03:25:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:25:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:39,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 03:25:39,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677273049] [2022-01-19 03:25:39,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677273049] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 03:25:39,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5551922] [2022-01-19 03:25:39,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 03:25:39,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 03:25:39,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 03:25:39,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 03:25:39,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 03:25:39,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 03:25:39,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 03:25:39,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-19 03:25:39,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 03:25:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 572 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 03:25:41,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 03:38:25,937 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~i~0_8 Int)) (or (forall ((v_~j~0_8 Int)) (or (forall ((v_~cur~0_30 Int)) (or (< v_~cur~0_30 (+ c_~prev~0 c_~cur~0)) (and (forall ((v_~cur~0_28 Int) (aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse0 (* 2 v_~cur~0_26))) (or (< aux_div_v_~cur~0_22_51 (+ .cse0 v_~cur~0_28 v_~cur~0_30 1 c_~cur~0)) (>= aux_mod_v_~cur~0_22_51 2) (< v_~cur~0_26 (+ (* 2 v_~cur~0_28) v_~cur~0_30 c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 21 aux_mod_v_~cur~0_22_51 (* 2 v_~j~0_8) (* aux_mod_v_~next~0_20_56 2))) (> 0 aux_mod_v_~cur~0_22_51) (< v_~prev~0_24 (+ v_~cur~0_28 v_~cur~0_26 v_~cur~0_30 c_~cur~0)) (< v_~cur~0_28 (+ (* 2 v_~cur~0_30) c_~cur~0)) (< (+ aux_mod_v_~next~0_20_56 (* 2 aux_mod_v_~cur~0_22_51) 10 v_~j~0_8) (+ .cse0 (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) (* 2 aux_div_v_~next~0_20_56) v_~cur~0_28 v_~cur~0_30 c_~cur~0)) (> 0 aux_mod_v_~next~0_20_56)))) (forall ((v_~cur~0_28 Int) (aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse1 (* 2 v_~cur~0_26))) (or (< (+ aux_mod_v_~next~0_20_56 (* 2 aux_mod_v_~cur~0_22_51) 10 v_~i~0_8) (+ .cse1 (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) (* 2 aux_div_v_~next~0_20_56) v_~cur~0_28 v_~cur~0_30 c_~cur~0)) (< aux_div_v_~cur~0_22_51 (+ .cse1 v_~cur~0_28 v_~cur~0_30 1 c_~cur~0)) (>= aux_mod_v_~cur~0_22_51 2) (< v_~cur~0_26 (+ (* 2 v_~cur~0_28) v_~cur~0_30 c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (> 0 aux_mod_v_~cur~0_22_51) (< v_~prev~0_24 (+ v_~cur~0_28 v_~cur~0_26 v_~cur~0_30 c_~cur~0)) (< v_~cur~0_28 (+ (* 2 v_~cur~0_30) c_~cur~0)) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ (* 2 v_~i~0_8) 21 aux_mod_v_~cur~0_22_51 (* aux_mod_v_~next~0_20_56 2))) (> 0 aux_mod_v_~next~0_20_56))))))) (not (<= v_~j~0_8 1)))) (not (<= v_~i~0_8 1)))) is different from false Received shutdown request... [2022-01-19 03:40:04,044 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 03:40:04,062 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 03:40:04,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 03:40:04,065 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 03:40:04,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 03:40:04,244 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 10 xjuncts wrt. a ATOM-1 context. [2022-01-19 03:40:04,246 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 03:40:04,246 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 03:40:04,248 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-01-19 03:40:04,249 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 03:40:04,249 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 03:40:04,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 03:40:04 BasicIcfg [2022-01-19 03:40:04,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 03:40:04,251 INFO L158 Benchmark]: Toolchain (without parser) took 869409.80ms. Allocated memory was 423.6MB in the beginning and 740.3MB in the end (delta: 316.7MB). Free memory was 368.7MB in the beginning and 456.3MB in the end (delta: -87.6MB). Peak memory consumption was 422.3MB. Max. memory is 16.0GB. [2022-01-19 03:40:04,252 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 423.6MB. Free memory is still 386.3MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 03:40:04,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.05ms. Allocated memory was 423.6MB in the beginning and 616.6MB in the end (delta: 192.9MB). Free memory was 368.5MB in the beginning and 581.5MB in the end (delta: -213.0MB). Peak memory consumption was 7.0MB. Max. memory is 16.0GB. [2022-01-19 03:40:04,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.75ms. Allocated memory is still 616.6MB. Free memory was 581.5MB in the beginning and 579.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 03:40:04,252 INFO L158 Benchmark]: Boogie Preprocessor took 20.34ms. Allocated memory is still 616.6MB. Free memory was 579.4MB in the beginning and 578.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 03:40:04,252 INFO L158 Benchmark]: RCFGBuilder took 338.16ms. Allocated memory is still 616.6MB. Free memory was 578.0MB in the beginning and 564.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 03:40:04,253 INFO L158 Benchmark]: TraceAbstraction took 868713.87ms. Allocated memory was 616.6MB in the beginning and 740.3MB in the end (delta: 123.7MB). Free memory was 564.1MB in the beginning and 456.3MB in the end (delta: 107.7MB). Peak memory consumption was 426.6MB. Max. memory is 16.0GB. [2022-01-19 03:40:04,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 423.6MB. Free memory is still 386.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 307.05ms. Allocated memory was 423.6MB in the beginning and 616.6MB in the end (delta: 192.9MB). Free memory was 368.5MB in the beginning and 581.5MB in the end (delta: -213.0MB). Peak memory consumption was 7.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.75ms. Allocated memory is still 616.6MB. Free memory was 581.5MB in the beginning and 579.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.34ms. Allocated memory is still 616.6MB. Free memory was 579.4MB in the beginning and 578.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 338.16ms. Allocated memory is still 616.6MB. Free memory was 578.0MB in the beginning and 564.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 868713.87ms. Allocated memory was 616.6MB in the beginning and 740.3MB in the end (delta: 123.7MB). Free memory was 564.1MB in the beginning and 456.3MB in the end (delta: 107.7MB). Peak memory consumption was 426.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 726]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 10 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 10 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 10 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 868.6s, OverallIterations: 6, TraceHistogramMax: 15, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 104 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 236 IncrementalHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 19 mSDtfsCounter, 236 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 546 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=644occurred in iteration=5, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 578 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 803 ConstructedInterpolants, 0 QuantifiedInterpolants, 1285 SizeOfPredicates, 22 NumberOfNonLiveVariables, 552 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 0/537 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown