/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_unsafe-7.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 03:40:05,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 03:40:05,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 03:40:05,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 03:40:05,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 03:40:05,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 03:40:05,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 03:40:05,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 03:40:05,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 03:40:05,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 03:40:05,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 03:40:05,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 03:40:05,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 03:40:05,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 03:40:05,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 03:40:05,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 03:40:05,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 03:40:05,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 03:40:05,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 03:40:05,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 03:40:05,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 03:40:05,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 03:40:05,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 03:40:05,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 03:40:05,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 03:40:05,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 03:40:05,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 03:40:05,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 03:40:05,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 03:40:05,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 03:40:05,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 03:40:05,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 03:40:05,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 03:40:05,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 03:40:05,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 03:40:05,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 03:40:05,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 03:40:05,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 03:40:05,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 03:40:05,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 03:40:05,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 03:40:05,773 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 03:40:05,809 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 03:40:05,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 03:40:05,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 03:40:05,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 03:40:05,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 03:40:05,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 03:40:05,811 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 03:40:05,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 03:40:05,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 03:40:05,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 03:40:05,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 03:40:05,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 03:40:05,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 03:40:05,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 03:40:05,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 03:40:05,813 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 03:40:05,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 03:40:05,813 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 03:40:05,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 03:40:05,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 03:40:05,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 03:40:05,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 03:40:05,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 03:40:05,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 03:40:05,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 03:40:05,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 03:40:05,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 03:40:05,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 03:40:05,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 03:40:05,814 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 03:40:05,815 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 03:40:05,815 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 03:40:05,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 03:40:06,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 03:40:06,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 03:40:06,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 03:40:06,082 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 03:40:06,083 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 03:40:06,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-7.i [2022-01-19 03:40:06,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9928b0f7a/9a10a39a11a14edf804c849abece1096/FLAG61f2cbab7 [2022-01-19 03:40:06,560 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 03:40:06,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-7.i [2022-01-19 03:40:06,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9928b0f7a/9a10a39a11a14edf804c849abece1096/FLAG61f2cbab7 [2022-01-19 03:40:06,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9928b0f7a/9a10a39a11a14edf804c849abece1096 [2022-01-19 03:40:06,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 03:40:06,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 03:40:06,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 03:40:06,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 03:40:06,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 03:40:06,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 03:40:06" (1/1) ... [2022-01-19 03:40:06,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75125e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:06, skipping insertion in model container [2022-01-19 03:40:06,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 03:40:06" (1/1) ... [2022-01-19 03:40:06,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 03:40:06,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 03:40:07,010 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_unsafe-7.i[30811,30824] [2022-01-19 03:40:07,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 03:40:07,019 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 03:40:07,067 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_unsafe-7.i[30811,30824] [2022-01-19 03:40:07,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 03:40:07,100 INFO L208 MainTranslator]: Completed translation [2022-01-19 03:40:07,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:07 WrapperNode [2022-01-19 03:40:07,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 03:40:07,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 03:40:07,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 03:40:07,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 03:40:07,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:07" (1/1) ... [2022-01-19 03:40:07,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:07" (1/1) ... [2022-01-19 03:40:07,156 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-01-19 03:40:07,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 03:40:07,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 03:40:07,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 03:40:07,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 03:40:07,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:07" (1/1) ... [2022-01-19 03:40:07,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:07" (1/1) ... [2022-01-19 03:40:07,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:07" (1/1) ... [2022-01-19 03:40:07,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:07" (1/1) ... [2022-01-19 03:40:07,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:07" (1/1) ... [2022-01-19 03:40:07,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:07" (1/1) ... [2022-01-19 03:40:07,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:07" (1/1) ... [2022-01-19 03:40:07,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 03:40:07,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 03:40:07,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 03:40:07,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 03:40:07,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:07" (1/1) ... [2022-01-19 03:40:07,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 03:40:07,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 03:40:07,216 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 03:40:07,226 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 03:40:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-01-19 03:40:07,250 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-01-19 03:40:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-01-19 03:40:07,251 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-01-19 03:40:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 03:40:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 03:40:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 03:40:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 03:40:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 03:40:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 03:40:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 03:40:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 03:40:07,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 03:40:07,257 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 03:40:07,397 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 03:40:07,399 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 03:40:07,638 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 03:40:07,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 03:40:07,656 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 03:40:07,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 03:40:07 BoogieIcfgContainer [2022-01-19 03:40:07,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 03:40:07,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 03:40:07,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 03:40:07,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 03:40:07,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 03:40:06" (1/3) ... [2022-01-19 03:40:07,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c174d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 03:40:07, skipping insertion in model container [2022-01-19 03:40:07,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:40:07" (2/3) ... [2022-01-19 03:40:07,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c174d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 03:40:07, skipping insertion in model container [2022-01-19 03:40:07,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 03:40:07" (3/3) ... [2022-01-19 03:40:07,666 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_unsafe-7.i [2022-01-19 03:40:07,670 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 03:40:07,671 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 03:40:07,671 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 03:40:07,725 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,725 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,726 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,726 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,726 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,726 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,726 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,726 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,730 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,730 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,730 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,731 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,731 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,731 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,731 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,732 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,732 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,732 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,732 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,733 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,733 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,733 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,733 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,733 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,733 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,733 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,734 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,734 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,734 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,734 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,735 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,735 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,735 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,735 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,736 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,736 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,738 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,739 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,739 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,739 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,739 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,741 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,741 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,741 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,741 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,741 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 03:40:07,742 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 03:40:07,778 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 03:40:07,783 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 03:40:07,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 03:40:07,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 202 flow [2022-01-19 03:40:07,844 INFO L129 PetriNetUnfolder]: 7/94 cut-off events. [2022-01-19 03:40:07,844 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 03:40:07,848 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 03:40:07,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 202 flow [2022-01-19 03:40:07,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 94 transitions, 194 flow [2022-01-19 03:40:07,889 INFO L129 PetriNetUnfolder]: 7/85 cut-off events. [2022-01-19 03:40:07,889 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 03:40:07,890 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 03:40:07,890 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 03:40:07,891 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 03:40:07,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 03:40:07,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1927097680, now seen corresponding path program 1 times [2022-01-19 03:40:07,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 03:40:07,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078737193] [2022-01-19 03:40:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:40:07,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 03:40:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:40:08,114 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 03:40:08,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 03:40:08,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078737193] [2022-01-19 03:40:08,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078737193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 03:40:08,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 03:40:08,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 03:40:08,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668042769] [2022-01-19 03:40:08,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 03:40:08,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 03:40:08,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 03:40:08,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 03:40:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 03:40:08,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 96 [2022-01-19 03:40:08,166 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 03:40:08,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 03:40:08,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 96 [2022-01-19 03:40:08,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 03:40:08,217 INFO L129 PetriNetUnfolder]: 3/89 cut-off events. [2022-01-19 03:40:08,217 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 03:40:08,219 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 03:40:08,221 INFO L132 encePairwiseOnDemand]: 92/96 looper letters, 2 selfloop transitions, 0 changer transitions 0/89 dead transitions. [2022-01-19 03:40:08,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 188 flow [2022-01-19 03:40:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 03:40:08,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 03:40:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 184 transitions. [2022-01-19 03:40:08,236 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2022-01-19 03:40:08,242 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 184 transitions. [2022-01-19 03:40:08,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 184 transitions. [2022-01-19 03:40:08,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 03:40:08,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 184 transitions. [2022-01-19 03:40:08,252 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 03:40:08,257 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 03:40:08,258 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 03:40:08,259 INFO L186 Difference]: Start difference. First operand has 94 places, 94 transitions, 194 flow. Second operand 2 states and 184 transitions. [2022-01-19 03:40:08,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 188 flow [2022-01-19 03:40:08,263 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 03:40:08,267 INFO L242 Difference]: Finished difference. Result has 92 places, 89 transitions, 182 flow [2022-01-19 03:40:08,269 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 03:40:08,272 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2022-01-19 03:40:08,273 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 182 flow [2022-01-19 03:40:08,273 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 03:40:08,273 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 03:40:08,274 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 03:40:08,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 03:40:08,274 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 03:40:08,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 03:40:08,275 INFO L85 PathProgramCache]: Analyzing trace with hash 560415153, now seen corresponding path program 1 times [2022-01-19 03:40:08,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 03:40:08,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397666145] [2022-01-19 03:40:08,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:40:08,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 03:40:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:40:08,389 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 03:40:08,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 03:40:08,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397666145] [2022-01-19 03:40:08,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397666145] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 03:40:08,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 03:40:08,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 03:40:08,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390121262] [2022-01-19 03:40:08,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 03:40:08,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 03:40:08,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 03:40:08,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 03:40:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 03:40:08,393 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 96 [2022-01-19 03:40:08,393 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 03:40:08,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 03:40:08,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 96 [2022-01-19 03:40:08,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 03:40:08,421 INFO L129 PetriNetUnfolder]: 3/95 cut-off events. [2022-01-19 03:40:08,422 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 03:40:08,422 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 03:40:08,423 INFO L132 encePairwiseOnDemand]: 93/96 looper letters, 9 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2022-01-19 03:40:08,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 210 flow [2022-01-19 03:40:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 03:40:08,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 03:40:08,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2022-01-19 03:40:08,425 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.90625 [2022-01-19 03:40:08,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2022-01-19 03:40:08,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2022-01-19 03:40:08,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 03:40:08,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2022-01-19 03:40:08,427 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 03:40:08,428 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 03:40:08,428 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 03:40:08,428 INFO L186 Difference]: Start difference. First operand has 92 places, 89 transitions, 182 flow. Second operand 3 states and 261 transitions. [2022-01-19 03:40:08,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 210 flow [2022-01-19 03:40:08,429 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 03:40:08,431 INFO L242 Difference]: Finished difference. Result has 95 places, 90 transitions, 194 flow [2022-01-19 03:40:08,431 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 03:40:08,432 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 1 predicate places. [2022-01-19 03:40:08,432 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 194 flow [2022-01-19 03:40:08,433 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 03:40:08,433 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 03:40:08,433 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 03:40:08,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 03:40:08,433 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 03:40:08,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 03:40:08,434 INFO L85 PathProgramCache]: Analyzing trace with hash -951035470, now seen corresponding path program 1 times [2022-01-19 03:40:08,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 03:40:08,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722161384] [2022-01-19 03:40:08,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:40:08,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 03:40:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:40:08,501 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 03:40:08,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 03:40:08,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722161384] [2022-01-19 03:40:08,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722161384] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 03:40:08,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140651980] [2022-01-19 03:40:08,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:40:08,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 03:40:08,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 03:40:08,507 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 03:40:08,531 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 03:40:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:40:08,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-19 03:40:08,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 03:40:08,816 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 03:40:08,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 03:40:08,955 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 03:40:08,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140651980] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 03:40:08,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 03:40:08,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-19 03:40:08,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938910557] [2022-01-19 03:40:08,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 03:40:08,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 03:40:08,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 03:40:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 03:40:08,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-19 03:40:08,960 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 96 [2022-01-19 03:40:08,961 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 03:40:08,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 03:40:08,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 96 [2022-01-19 03:40:08,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 03:40:09,028 INFO L129 PetriNetUnfolder]: 3/104 cut-off events. [2022-01-19 03:40:09,028 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 03:40:09,029 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 03:40:09,030 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 10 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2022-01-19 03:40:09,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 250 flow [2022-01-19 03:40:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 03:40:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 03:40:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 750 transitions. [2022-01-19 03:40:09,034 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8680555555555556 [2022-01-19 03:40:09,034 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 750 transitions. [2022-01-19 03:40:09,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 750 transitions. [2022-01-19 03:40:09,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 03:40:09,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 750 transitions. [2022-01-19 03:40:09,036 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 03:40:09,039 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 03:40:09,039 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 03:40:09,039 INFO L186 Difference]: Start difference. First operand has 95 places, 90 transitions, 194 flow. Second operand 9 states and 750 transitions. [2022-01-19 03:40:09,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 250 flow [2022-01-19 03:40:09,041 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 03:40:09,042 INFO L242 Difference]: Finished difference. Result has 105 places, 96 transitions, 242 flow [2022-01-19 03:40:09,043 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 03:40:09,043 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2022-01-19 03:40:09,044 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 96 transitions, 242 flow [2022-01-19 03:40:09,044 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 03:40:09,044 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 03:40:09,044 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 03:40:09,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-19 03:40:09,259 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 03:40:09,260 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 03:40:09,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 03:40:09,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1666707666, now seen corresponding path program 2 times [2022-01-19 03:40:09,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 03:40:09,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385836455] [2022-01-19 03:40:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:40:09,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 03:40:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:40:09,353 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 03:40:09,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 03:40:09,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385836455] [2022-01-19 03:40:09,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385836455] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 03:40:09,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299224682] [2022-01-19 03:40:09,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 03:40:09,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 03:40:09,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 03:40:09,359 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 03:40:09,361 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 03:40:09,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 03:40:09,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 03:40:09,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 03:40:09,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 03:40:09,614 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 03:40:09,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 03:40:09,803 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 03:40:09,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299224682] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 03:40:09,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 03:40:09,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-19 03:40:09,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116628626] [2022-01-19 03:40:09,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 03:40:09,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 03:40:09,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 03:40:09,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 03:40:09,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-01-19 03:40:09,809 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 96 [2022-01-19 03:40:09,810 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 03:40:09,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 03:40:09,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 96 [2022-01-19 03:40:09,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 03:40:10,005 INFO L129 PetriNetUnfolder]: 3/132 cut-off events. [2022-01-19 03:40:10,005 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-01-19 03:40:10,008 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 03:40:10,008 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 14 selfloop transitions, 21 changer transitions 0/114 dead transitions. [2022-01-19 03:40:10,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 114 transitions, 408 flow [2022-01-19 03:40:10,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 03:40:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 03:40:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1740 transitions. [2022-01-19 03:40:10,013 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8630952380952381 [2022-01-19 03:40:10,013 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1740 transitions. [2022-01-19 03:40:10,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1740 transitions. [2022-01-19 03:40:10,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 03:40:10,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1740 transitions. [2022-01-19 03:40:10,019 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 03:40:10,022 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 03:40:10,023 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 03:40:10,023 INFO L186 Difference]: Start difference. First operand has 105 places, 96 transitions, 242 flow. Second operand 21 states and 1740 transitions. [2022-01-19 03:40:10,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 114 transitions, 408 flow [2022-01-19 03:40:10,027 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 03:40:10,030 INFO L242 Difference]: Finished difference. Result has 129 places, 109 transitions, 366 flow [2022-01-19 03:40:10,030 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 03:40:10,032 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 35 predicate places. [2022-01-19 03:40:10,032 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 109 transitions, 366 flow [2022-01-19 03:40:10,033 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 03:40:10,033 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 03:40:10,033 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 03:40:10,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 03:40:10,255 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 03:40:10,256 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 03:40:10,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 03:40:10,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1283180782, now seen corresponding path program 3 times [2022-01-19 03:40:10,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 03:40:10,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127354885] [2022-01-19 03:40:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:40:10,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 03:40:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:40:10,486 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 03:40:10,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 03:40:10,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127354885] [2022-01-19 03:40:10,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127354885] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 03:40:10,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621169214] [2022-01-19 03:40:10,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 03:40:10,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 03:40:10,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 03:40:10,492 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 03:40:10,493 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 03:40:10,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-01-19 03:40:10,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 03:40:10,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 03:40:10,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 03:40:10,770 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 03:40:10,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 03:40:11,163 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 03:40:11,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621169214] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 03:40:11,164 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 03:40:11,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-01-19 03:40:11,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224868679] [2022-01-19 03:40:11,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 03:40:11,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 03:40:11,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 03:40:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 03:40:11,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 03:40:11,169 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 96 [2022-01-19 03:40:11,171 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 03:40:11,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 03:40:11,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 96 [2022-01-19 03:40:11,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 03:40:11,718 INFO L129 PetriNetUnfolder]: 3/188 cut-off events. [2022-01-19 03:40:11,719 INFO L130 PetriNetUnfolder]: For 262/262 co-relation queries the response was YES. [2022-01-19 03:40:11,720 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 03:40:11,723 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 22 selfloop transitions, 45 changer transitions 0/146 dead transitions. [2022-01-19 03:40:11,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 146 transitions, 788 flow [2022-01-19 03:40:11,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 03:40:11,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 03:40:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3720 transitions. [2022-01-19 03:40:11,731 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8611111111111112 [2022-01-19 03:40:11,731 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3720 transitions. [2022-01-19 03:40:11,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3720 transitions. [2022-01-19 03:40:11,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 03:40:11,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3720 transitions. [2022-01-19 03:40:11,745 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 03:40:11,752 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 03:40:11,754 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 03:40:11,754 INFO L186 Difference]: Start difference. First operand has 129 places, 109 transitions, 366 flow. Second operand 45 states and 3720 transitions. [2022-01-19 03:40:11,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 146 transitions, 788 flow [2022-01-19 03:40:11,761 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 03:40:11,764 INFO L242 Difference]: Finished difference. Result has 176 places, 134 transitions, 644 flow [2022-01-19 03:40:11,765 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 03:40:11,768 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 82 predicate places. [2022-01-19 03:40:11,768 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 134 transitions, 644 flow [2022-01-19 03:40:11,770 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 03:40:11,770 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 03:40:11,770 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 03:40:11,795 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 03:40:11,994 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 03:40:11,995 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 03:40:11,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 03:40:11,995 INFO L85 PathProgramCache]: Analyzing trace with hash 835265426, now seen corresponding path program 4 times [2022-01-19 03:40:11,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 03:40:11,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414885924] [2022-01-19 03:40:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 03:40:11,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 03:40:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 03:40:12,415 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 03:40:12,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 03:40:12,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414885924] [2022-01-19 03:40:12,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414885924] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 03:40:12,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429904234] [2022-01-19 03:40:12,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 03:40:12,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 03:40:12,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 03:40:12,417 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 03:40:12,423 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 03:40:12,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 03:40:12,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 03:40:12,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-19 03:40:12,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 03:40:15,257 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 03:40:15,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 03:53:04,412 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 (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 aux_mod_v_~cur~0_22_51) 11 v_~i~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)) (>= 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) (+ 23 (* 2 v_~i~0_8) aux_mod_v_~cur~0_22_51 (* aux_mod_v_~next~0_20_56 2))) (> 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_div_v_~cur~0_22_51 (+ .cse1 v_~cur~0_28 v_~cur~0_30 1 c_~cur~0)) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 23 aux_mod_v_~cur~0_22_51 (* 2 v_~j~0_8) (* aux_mod_v_~next~0_20_56 2))) (>= 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)) (> 0 aux_mod_v_~next~0_20_56) (< (+ aux_mod_v_~next~0_20_56 (* 2 aux_mod_v_~cur~0_22_51) 11 v_~j~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)))))) (< v_~cur~0_30 (+ c_~prev~0 c_~cur~0)))) (not (<= v_~j~0_8 1)))) (not (<= v_~i~0_8 1)))) is different from false Received shutdown request... [2022-01-19 03:54:27,155 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-19 03:54:27,157 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 03:54:27,175 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 03:54:27,180 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 03:54:27,180 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 03:54:27,357 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 03:54:27,358 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 2ms.. [2022-01-19 03:54:27,359 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 03:54:27,360 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 03:54:27,366 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-01-19 03:54:27,368 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 03:54:27,368 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 03:54:27,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 03:54:27 BasicIcfg [2022-01-19 03:54:27,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 03:54:27,376 INFO L158 Benchmark]: Toolchain (without parser) took 860785.16ms. Allocated memory was 364.9MB in the beginning and 534.8MB in the end (delta: 169.9MB). Free memory was 310.9MB in the beginning and 400.3MB in the end (delta: -89.4MB). Peak memory consumption was 304.2MB. Max. memory is 16.0GB. [2022-01-19 03:54:27,376 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 364.9MB. Free memory was 329.4MB in the beginning and 329.3MB in the end (delta: 65.1kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 03:54:27,377 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.82ms. Allocated memory was 364.9MB in the beginning and 444.6MB in the end (delta: 79.7MB). Free memory was 310.7MB in the beginning and 408.5MB in the end (delta: -97.8MB). Peak memory consumption was 8.8MB. Max. memory is 16.0GB. [2022-01-19 03:54:27,377 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.37ms. Allocated memory is still 444.6MB. Free memory was 408.5MB in the beginning and 405.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 03:54:27,377 INFO L158 Benchmark]: Boogie Preprocessor took 20.50ms. Allocated memory is still 444.6MB. Free memory was 405.8MB in the beginning and 405.3MB in the end (delta: 479.7kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 03:54:27,378 INFO L158 Benchmark]: RCFGBuilder took 479.93ms. Allocated memory is still 444.6MB. Free memory was 405.3MB in the beginning and 389.6MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 03:54:27,378 INFO L158 Benchmark]: TraceAbstraction took 859710.46ms. Allocated memory was 444.6MB in the beginning and 534.8MB in the end (delta: 90.2MB). Free memory was 389.6MB in the beginning and 400.3MB in the end (delta: -10.7MB). Peak memory consumption was 302.4MB. Max. memory is 16.0GB. [2022-01-19 03:54:27,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 364.9MB. Free memory was 329.4MB in the beginning and 329.3MB in the end (delta: 65.1kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 513.82ms. Allocated memory was 364.9MB in the beginning and 444.6MB in the end (delta: 79.7MB). Free memory was 310.7MB in the beginning and 408.5MB in the end (delta: -97.8MB). Peak memory consumption was 8.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.37ms. Allocated memory is still 444.6MB. Free memory was 408.5MB in the beginning and 405.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.50ms. Allocated memory is still 444.6MB. Free memory was 405.8MB in the beginning and 405.3MB in the end (delta: 479.7kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 479.93ms. Allocated memory is still 444.6MB. Free memory was 405.3MB in the beginning and 389.6MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 859710.46ms. Allocated memory was 444.6MB in the beginning and 534.8MB in the end (delta: 90.2MB). Free memory was 389.6MB in the beginning and 400.3MB in the end (delta: -10.7MB). Peak memory consumption was 302.4MB. 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 SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 2ms.. - 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 SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 2ms.. - 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 SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 2ms.. - 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: 859.6s, OverallIterations: 6, TraceHistogramMax: 15, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, 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, 0.9s 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, 1.7s 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