/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 22:53:28,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 22:53:28,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 22:53:28,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 22:53:28,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 22:53:28,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 22:53:28,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 22:53:28,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 22:53:28,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 22:53:28,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 22:53:28,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 22:53:28,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 22:53:28,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 22:53:28,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 22:53:28,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 22:53:28,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 22:53:28,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 22:53:28,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 22:53:28,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 22:53:28,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 22:53:28,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 22:53:28,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 22:53:28,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 22:53:28,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 22:53:28,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 22:53:28,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 22:53:28,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 22:53:28,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 22:53:28,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 22:53:28,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 22:53:28,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 22:53:28,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 22:53:28,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 22:53:28,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 22:53:28,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 22:53:28,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 22:53:28,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 22:53:28,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 22:53:28,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 22:53:28,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 22:53:28,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 22:53:28,690 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.epf [2022-01-18 22:53:28,719 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 22:53:28,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 22:53:28,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 22:53:28,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 22:53:28,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 22:53:28,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 22:53:28,721 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 22:53:28,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 22:53:28,721 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 22:53:28,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 22:53:28,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 22:53:28,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 22:53:28,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 22:53:28,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 22:53:28,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 22:53:28,722 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 22:53:28,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 22:53:28,722 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 22:53:28,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 22:53:28,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 22:53:28,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 22:53:28,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 22:53:28,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 22:53:28,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:53:28,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 22:53:28,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 22:53:28,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 22:53:28,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 22:53:28,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 22:53:28,725 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 22:53:28,725 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 22:53:28,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 22:53:28,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 22:53:28,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 22:53:28,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 22:53:28,990 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 22:53:28,991 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 22:53:28,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2022-01-18 22:53:29,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0caeb419/b69e36b552254499bd41923cdff369d2/FLAG7a2f96287 [2022-01-18 22:53:29,420 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 22:53:29,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2022-01-18 22:53:29,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0caeb419/b69e36b552254499bd41923cdff369d2/FLAG7a2f96287 [2022-01-18 22:53:29,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0caeb419/b69e36b552254499bd41923cdff369d2 [2022-01-18 22:53:29,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 22:53:29,770 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 22:53:29,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 22:53:29,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 22:53:29,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 22:53:29,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:53:29" (1/1) ... [2022-01-18 22:53:29,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d544972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:29, skipping insertion in model container [2022-01-18 22:53:29,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:53:29" (1/1) ... [2022-01-18 22:53:29,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 22:53:29,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 22:53:29,975 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-wmm/safe033_tso.i[945,958] [2022-01-18 22:53:30,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:53:30,135 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 22:53:30,146 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-wmm/safe033_tso.i[945,958] [2022-01-18 22:53:30,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:53:30,217 INFO L208 MainTranslator]: Completed translation [2022-01-18 22:53:30,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:30 WrapperNode [2022-01-18 22:53:30,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 22:53:30,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 22:53:30,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 22:53:30,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 22:53:30,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:30" (1/1) ... [2022-01-18 22:53:30,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:30" (1/1) ... [2022-01-18 22:53:30,274 INFO L137 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-01-18 22:53:30,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 22:53:30,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 22:53:30,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 22:53:30,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 22:53:30,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:30" (1/1) ... [2022-01-18 22:53:30,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:30" (1/1) ... [2022-01-18 22:53:30,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:30" (1/1) ... [2022-01-18 22:53:30,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:30" (1/1) ... [2022-01-18 22:53:30,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:30" (1/1) ... [2022-01-18 22:53:30,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:30" (1/1) ... [2022-01-18 22:53:30,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:30" (1/1) ... [2022-01-18 22:53:30,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 22:53:30,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 22:53:30,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 22:53:30,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 22:53:30,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:30" (1/1) ... [2022-01-18 22:53:30,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:53:30,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 22:53:30,344 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) [2022-01-18 22:53:30,371 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 [2022-01-18 22:53:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 22:53:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 22:53:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 22:53:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 22:53:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 22:53:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-18 22:53:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-18 22:53:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-18 22:53:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-18 22:53:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 22:53:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 22:53:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 22:53:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 22:53:30,389 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 22:53:30,512 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 22:53:30,513 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 22:53:30,663 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 22:53:30,669 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 22:53:30,669 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 22:53:30,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:53:30 BoogieIcfgContainer [2022-01-18 22:53:30,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 22:53:30,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 22:53:30,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 22:53:30,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 22:53:30,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 10:53:29" (1/3) ... [2022-01-18 22:53:30,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef6b585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:53:30, skipping insertion in model container [2022-01-18 22:53:30,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:30" (2/3) ... [2022-01-18 22:53:30,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef6b585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:53:30, skipping insertion in model container [2022-01-18 22:53:30,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:53:30" (3/3) ... [2022-01-18 22:53:30,677 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2022-01-18 22:53:30,681 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 22:53:30,682 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 22:53:30,682 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 22:53:30,706 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,706 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,706 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,706 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,706 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,707 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,707 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,707 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,707 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,707 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,708 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,708 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,708 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,708 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,708 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,708 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,709 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,709 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,709 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,709 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,709 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,709 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,710 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,710 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,712 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,713 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,713 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,713 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,715 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,715 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,715 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,715 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:30,716 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 22:53:30,755 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 22:53:30,760 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 [2022-01-18 22:53:30,761 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 22:53:30,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 74 transitions, 158 flow [2022-01-18 22:53:30,801 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2022-01-18 22:53:30,801 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:53:30,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2022-01-18 22:53:30,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 74 transitions, 158 flow [2022-01-18 22:53:30,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 60 transitions, 126 flow [2022-01-18 22:53:30,821 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2022-01-18 22:53:30,822 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:53:30,822 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:30,822 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] [2022-01-18 22:53:30,823 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 22:53:30,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1399573848, now seen corresponding path program 1 times [2022-01-18 22:53:30,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:30,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327145384] [2022-01-18 22:53:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:30,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:31,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:31,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327145384] [2022-01-18 22:53:31,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327145384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:31,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:31,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:53:31,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381259891] [2022-01-18 22:53:31,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:31,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:53:31,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:31,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:53:31,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:53:31,227 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 74 [2022-01-18 22:53:31,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 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) [2022-01-18 22:53:31,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:31,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 74 [2022-01-18 22:53:31,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:31,439 INFO L129 PetriNetUnfolder]: 25/140 cut-off events. [2022-01-18 22:53:31,439 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-18 22:53:31,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 140 events. 25/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 415 event pairs, 5 based on Foata normal form. 6/143 useless extension candidates. Maximal degree in co-relation 182. Up to 33 conditions per place. [2022-01-18 22:53:31,444 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 11 selfloop transitions, 3 changer transitions 19/81 dead transitions. [2022-01-18 22:53:31,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 237 flow [2022-01-18 22:53:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 22:53:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 22:53:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 568 transitions. [2022-01-18 22:53:31,465 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8528528528528528 [2022-01-18 22:53:31,469 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 568 transitions. [2022-01-18 22:53:31,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 568 transitions. [2022-01-18 22:53:31,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:31,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 568 transitions. [2022-01-18 22:53:31,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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) [2022-01-18 22:53:31,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2022-01-18 22:53:31,484 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2022-01-18 22:53:31,486 INFO L186 Difference]: Start difference. First operand has 66 places, 60 transitions, 126 flow. Second operand 9 states and 568 transitions. [2022-01-18 22:53:31,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 237 flow [2022-01-18 22:53:31,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-18 22:53:31,492 INFO L242 Difference]: Finished difference. Result has 79 places, 61 transitions, 165 flow [2022-01-18 22:53:31,494 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=165, PETRI_PLACES=79, PETRI_TRANSITIONS=61} [2022-01-18 22:53:31,500 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2022-01-18 22:53:31,501 INFO L470 AbstractCegarLoop]: Abstraction has has 79 places, 61 transitions, 165 flow [2022-01-18 22:53:31,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 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) [2022-01-18 22:53:31,508 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:31,508 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] [2022-01-18 22:53:31,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 22:53:31,508 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 22:53:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:31,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1506298105, now seen corresponding path program 1 times [2022-01-18 22:53:31,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:31,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043892110] [2022-01-18 22:53:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:31,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:31,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:31,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043892110] [2022-01-18 22:53:31,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043892110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:31,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:31,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:53:31,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252550746] [2022-01-18 22:53:31,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:31,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:53:31,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:31,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:53:31,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:53:31,680 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 74 [2022-01-18 22:53:31,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 61 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 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) [2022-01-18 22:53:31,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:31,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 74 [2022-01-18 22:53:31,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:31,830 INFO L129 PetriNetUnfolder]: 47/200 cut-off events. [2022-01-18 22:53:31,831 INFO L130 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2022-01-18 22:53:31,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 200 events. 47/200 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 829 event pairs, 4 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 353. Up to 34 conditions per place. [2022-01-18 22:53:31,834 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 16 selfloop transitions, 12 changer transitions 8/85 dead transitions. [2022-01-18 22:53:31,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 85 transitions, 287 flow [2022-01-18 22:53:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:53:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:53:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 628 transitions. [2022-01-18 22:53:31,837 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8486486486486486 [2022-01-18 22:53:31,837 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 628 transitions. [2022-01-18 22:53:31,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 628 transitions. [2022-01-18 22:53:31,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:31,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 628 transitions. [2022-01-18 22:53:31,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.8) internal successors, (628), 10 states have internal predecessors, (628), 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) [2022-01-18 22:53:31,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2022-01-18 22:53:31,842 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2022-01-18 22:53:31,842 INFO L186 Difference]: Start difference. First operand has 79 places, 61 transitions, 165 flow. Second operand 10 states and 628 transitions. [2022-01-18 22:53:31,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 85 transitions, 287 flow [2022-01-18 22:53:31,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 278 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-18 22:53:31,846 INFO L242 Difference]: Finished difference. Result has 84 places, 72 transitions, 242 flow [2022-01-18 22:53:31,846 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2022-01-18 22:53:31,847 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2022-01-18 22:53:31,847 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 242 flow [2022-01-18 22:53:31,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 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) [2022-01-18 22:53:31,848 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:31,848 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] [2022-01-18 22:53:31,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 22:53:31,848 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 22:53:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash 632693896, now seen corresponding path program 1 times [2022-01-18 22:53:31,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:31,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203548109] [2022-01-18 22:53:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:31,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:32,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:32,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203548109] [2022-01-18 22:53:32,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203548109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:32,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:32,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:53:32,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405344065] [2022-01-18 22:53:32,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:32,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:53:32,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:32,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:53:32,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:53:32,018 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 74 [2022-01-18 22:53:32,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 60.42857142857143) internal successors, (423), 7 states have internal predecessors, (423), 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) [2022-01-18 22:53:32,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:32,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 74 [2022-01-18 22:53:32,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:32,172 INFO L129 PetriNetUnfolder]: 24/155 cut-off events. [2022-01-18 22:53:32,172 INFO L130 PetriNetUnfolder]: For 137/143 co-relation queries the response was YES. [2022-01-18 22:53:32,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 155 events. 24/155 cut-off events. For 137/143 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 609 event pairs, 0 based on Foata normal form. 4/153 useless extension candidates. Maximal degree in co-relation 355. Up to 20 conditions per place. [2022-01-18 22:53:32,174 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 14 selfloop transitions, 15 changer transitions 13/91 dead transitions. [2022-01-18 22:53:32,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 91 transitions, 410 flow [2022-01-18 22:53:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:53:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:53:32,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 804 transitions. [2022-01-18 22:53:32,176 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8357588357588358 [2022-01-18 22:53:32,177 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 804 transitions. [2022-01-18 22:53:32,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 804 transitions. [2022-01-18 22:53:32,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:32,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 804 transitions. [2022-01-18 22:53:32,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.84615384615385) internal successors, (804), 13 states have internal predecessors, (804), 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) [2022-01-18 22:53:32,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 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) [2022-01-18 22:53:32,182 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 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) [2022-01-18 22:53:32,182 INFO L186 Difference]: Start difference. First operand has 84 places, 72 transitions, 242 flow. Second operand 13 states and 804 transitions. [2022-01-18 22:53:32,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 91 transitions, 410 flow [2022-01-18 22:53:32,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 388 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-01-18 22:53:32,186 INFO L242 Difference]: Finished difference. Result has 99 places, 74 transitions, 295 flow [2022-01-18 22:53:32,187 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=295, PETRI_PLACES=99, PETRI_TRANSITIONS=74} [2022-01-18 22:53:32,187 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 33 predicate places. [2022-01-18 22:53:32,188 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 74 transitions, 295 flow [2022-01-18 22:53:32,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.42857142857143) internal successors, (423), 7 states have internal predecessors, (423), 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) [2022-01-18 22:53:32,188 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:32,188 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] [2022-01-18 22:53:32,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 22:53:32,189 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 22:53:32,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:32,189 INFO L85 PathProgramCache]: Analyzing trace with hash -364611864, now seen corresponding path program 1 times [2022-01-18 22:53:32,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:32,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180981863] [2022-01-18 22:53:32,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:32,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:32,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:32,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180981863] [2022-01-18 22:53:32,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180981863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:32,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:32,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:53:32,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158850037] [2022-01-18 22:53:32,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:32,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:53:32,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:32,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:53:32,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:53:32,275 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 74 [2022-01-18 22:53:32,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 74 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 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) [2022-01-18 22:53:32,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:32,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 74 [2022-01-18 22:53:32,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:32,353 INFO L129 PetriNetUnfolder]: 9/169 cut-off events. [2022-01-18 22:53:32,354 INFO L130 PetriNetUnfolder]: For 222/225 co-relation queries the response was YES. [2022-01-18 22:53:32,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 169 events. 9/169 cut-off events. For 222/225 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 730 event pairs, 1 based on Foata normal form. 1/164 useless extension candidates. Maximal degree in co-relation 369. Up to 21 conditions per place. [2022-01-18 22:53:32,355 INFO L132 encePairwiseOnDemand]: 68/74 looper letters, 9 selfloop transitions, 2 changer transitions 18/78 dead transitions. [2022-01-18 22:53:32,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 78 transitions, 337 flow [2022-01-18 22:53:32,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 22:53:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-18 22:53:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 371 transitions. [2022-01-18 22:53:32,358 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8355855855855856 [2022-01-18 22:53:32,358 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 371 transitions. [2022-01-18 22:53:32,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 371 transitions. [2022-01-18 22:53:32,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:32,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 371 transitions. [2022-01-18 22:53:32,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2022-01-18 22:53:32,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2022-01-18 22:53:32,361 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2022-01-18 22:53:32,361 INFO L186 Difference]: Start difference. First operand has 99 places, 74 transitions, 295 flow. Second operand 6 states and 371 transitions. [2022-01-18 22:53:32,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 78 transitions, 337 flow [2022-01-18 22:53:32,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 78 transitions, 303 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-01-18 22:53:32,370 INFO L242 Difference]: Finished difference. Result has 95 places, 60 transitions, 189 flow [2022-01-18 22:53:32,370 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=95, PETRI_TRANSITIONS=60} [2022-01-18 22:53:32,371 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 29 predicate places. [2022-01-18 22:53:32,371 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 60 transitions, 189 flow [2022-01-18 22:53:32,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 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) [2022-01-18 22:53:32,372 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:32,372 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] [2022-01-18 22:53:32,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 22:53:32,372 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 22:53:32,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:32,374 INFO L85 PathProgramCache]: Analyzing trace with hash -67500082, now seen corresponding path program 2 times [2022-01-18 22:53:32,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:32,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698280460] [2022-01-18 22:53:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:32,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:32,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:32,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698280460] [2022-01-18 22:53:32,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698280460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:32,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:32,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:53:32,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144452010] [2022-01-18 22:53:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:32,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:53:32,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:53:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:53:32,510 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 74 [2022-01-18 22:53:32,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 60 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 59.714285714285715) internal successors, (418), 7 states have internal predecessors, (418), 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) [2022-01-18 22:53:32,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:32,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 74 [2022-01-18 22:53:32,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:32,573 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2022-01-18 22:53:32,574 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-01-18 22:53:32,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 60 events. 1/60 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2022-01-18 22:53:32,574 INFO L132 encePairwiseOnDemand]: 68/74 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2022-01-18 22:53:32,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 58 transitions, 205 flow [2022-01-18 22:53:32,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 22:53:32,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-18 22:53:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 418 transitions. [2022-01-18 22:53:32,576 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.806949806949807 [2022-01-18 22:53:32,576 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 418 transitions. [2022-01-18 22:53:32,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 418 transitions. [2022-01-18 22:53:32,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:32,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 418 transitions. [2022-01-18 22:53:32,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.714285714285715) internal successors, (418), 7 states have internal predecessors, (418), 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) [2022-01-18 22:53:32,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 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) [2022-01-18 22:53:32,579 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 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) [2022-01-18 22:53:32,579 INFO L186 Difference]: Start difference. First operand has 95 places, 60 transitions, 189 flow. Second operand 7 states and 418 transitions. [2022-01-18 22:53:32,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 58 transitions, 205 flow [2022-01-18 22:53:32,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 58 transitions, 154 flow, removed 12 selfloop flow, removed 16 redundant places. [2022-01-18 22:53:32,581 INFO L242 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2022-01-18 22:53:32,581 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2022-01-18 22:53:32,582 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2022-01-18 22:53:32,582 INFO L470 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2022-01-18 22:53:32,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.714285714285715) internal successors, (418), 7 states have internal predecessors, (418), 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) [2022-01-18 22:53:32,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 22:53:32,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 22:53:32,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 22:53:32,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 22:53:32,588 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-01-18 22:53:32,590 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 22:53:32,590 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 22:53:32,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:53:32 BasicIcfg [2022-01-18 22:53:32,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 22:53:32,594 INFO L158 Benchmark]: Toolchain (without parser) took 2823.33ms. Allocated memory is still 375.4MB. Free memory was 320.5MB in the beginning and 171.9MB in the end (delta: 148.6MB). Peak memory consumption was 146.0MB. Max. memory is 16.0GB. [2022-01-18 22:53:32,594 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 375.4MB. Free memory is still 338.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:53:32,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.83ms. Allocated memory is still 375.4MB. Free memory was 320.3MB in the beginning and 338.6MB in the end (delta: -18.3MB). Peak memory consumption was 16.0MB. Max. memory is 16.0GB. [2022-01-18 22:53:32,595 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.96ms. Allocated memory is still 375.4MB. Free memory was 338.6MB in the beginning and 336.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:53:32,595 INFO L158 Benchmark]: Boogie Preprocessor took 31.49ms. Allocated memory is still 375.4MB. Free memory was 336.5MB in the beginning and 335.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:53:32,596 INFO L158 Benchmark]: RCFGBuilder took 363.55ms. Allocated memory is still 375.4MB. Free memory was 335.5MB in the beginning and 321.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 22:53:32,596 INFO L158 Benchmark]: TraceAbstraction took 1920.86ms. Allocated memory is still 375.4MB. Free memory was 321.8MB in the beginning and 171.9MB in the end (delta: 149.9MB). Peak memory consumption was 148.9MB. Max. memory is 16.0GB. [2022-01-18 22:53:32,598 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 375.4MB. Free memory is still 338.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 446.83ms. Allocated memory is still 375.4MB. Free memory was 320.3MB in the beginning and 338.6MB in the end (delta: -18.3MB). Peak memory consumption was 16.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.96ms. Allocated memory is still 375.4MB. Free memory was 338.6MB in the beginning and 336.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.49ms. Allocated memory is still 375.4MB. Free memory was 336.5MB in the beginning and 335.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 363.55ms. Allocated memory is still 375.4MB. Free memory was 335.5MB in the beginning and 321.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 1920.86ms. Allocated memory is still 375.4MB. Free memory was 321.8MB in the beginning and 171.9MB in the end (delta: 149.9MB). Peak memory consumption was 148.9MB. 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 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 89 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: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 112 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 112 mSDsluCounter, 134 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 139 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 185 IncrementalHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 32 mSDtfsCounter, 185 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=295occurred in iteration=3, InterpolantAutomatonStates: 45, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 247 ConstructedInterpolants, 0 QuantifiedInterpolants, 635 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 22:53:32,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...