/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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:03:22,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:03:22,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:03:22,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:03:22,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:03:22,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:03:22,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:03:22,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:03:22,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:03:22,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:03:22,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:03:22,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:03:22,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:03:22,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:03:22,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:03:22,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:03:22,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:03:22,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:03:22,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:03:22,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:03:22,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:03:22,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:03:22,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:03:22,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:03:22,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:03:22,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:03:22,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:03:22,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:03:22,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:03:22,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:03:22,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:03:22,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:03:22,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:03:22,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:03:22,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:03:22,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:03:22,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:03:22,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:03:22,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:03:22,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:03:22,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:03:22,573 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-VariableLbe.epf [2023-01-28 07:03:22,592 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:03:22,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:03:22,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:03:22,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:03:22,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:03:22,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:03:22,594 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:03:22,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:03:22,594 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:03:22,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:03:22,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:03:22,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:03:22,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:03:22,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:03:22,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:03:22,595 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:03:22,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:03:22,595 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:03:22,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:03:22,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:03:22,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:03:22,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:03:22,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:03:22,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:03:22,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:03:22,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:03:22,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:03:22,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:03:22,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:03:22,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:03:22,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:03:22,597 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:03:22,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:03:22,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:03:22,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:03:22,837 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:03:22,840 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:03:22,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2023-01-28 07:03:23,877 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:03:24,095 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:03:24,096 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2023-01-28 07:03:24,107 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dccd3a71c/1fe990c74f7d4e3fb0d4840a913f5255/FLAG09604e436 [2023-01-28 07:03:24,119 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dccd3a71c/1fe990c74f7d4e3fb0d4840a913f5255 [2023-01-28 07:03:24,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:03:24,122 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:03:24,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:03:24,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:03:24,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:03:24,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ca3921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24, skipping insertion in model container [2023-01-28 07:03:24,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:03:24,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:03:24,293 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i[945,958] [2023-01-28 07:03:24,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:03:24,432 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:03:24,440 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i[945,958] [2023-01-28 07:03:24,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:03:24,498 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:03:24,498 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:03:24,503 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:03:24,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24 WrapperNode [2023-01-28 07:03:24,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:03:24,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:03:24,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:03:24,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:03:24,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,550 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-01-28 07:03:24,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:03:24,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:03:24,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:03:24,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:03:24,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,578 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:03:24,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:03:24,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:03:24,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:03:24,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24" (1/1) ... [2023-01-28 07:03:24,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:03:24,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:03:24,622 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) [2023-01-28 07:03:24,630 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 [2023-01-28 07:03:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:03:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:03:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:03:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:03:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:03:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:03:24,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:03:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:03:24,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:03:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:03:24,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:03:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:03:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:03:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:03:24,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:03:24,650 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:03:24,795 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:03:24,796 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:03:24,915 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:03:24,919 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:03:24,919 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:03:24,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:03:24 BoogieIcfgContainer [2023-01-28 07:03:24,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:03:24,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:03:24,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:03:24,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:03:24,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:03:24" (1/3) ... [2023-01-28 07:03:24,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e770517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:03:24, skipping insertion in model container [2023-01-28 07:03:24,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:24" (2/3) ... [2023-01-28 07:03:24,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e770517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:03:24, skipping insertion in model container [2023-01-28 07:03:24,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:03:24" (3/3) ... [2023-01-28 07:03:24,926 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2023-01-28 07:03:24,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:03:24,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:03:24,938 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:03:24,973 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:03:24,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2023-01-28 07:03:25,041 INFO L130 PetriNetUnfolder]: 2/80 cut-off events. [2023-01-28 07:03:25,041 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:03:25,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-01-28 07:03:25,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2023-01-28 07:03:25,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2023-01-28 07:03:25,049 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:03:25,054 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 68 transitions, 145 flow [2023-01-28 07:03:25,056 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 68 transitions, 145 flow [2023-01-28 07:03:25,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 68 transitions, 145 flow [2023-01-28 07:03:25,069 INFO L130 PetriNetUnfolder]: 1/68 cut-off events. [2023-01-28 07:03:25,069 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:03:25,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 35 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-01-28 07:03:25,071 INFO L119 LiptonReduction]: Number of co-enabled transitions 974 [2023-01-28 07:03:26,606 INFO L134 LiptonReduction]: Checked pairs total: 1736 [2023-01-28 07:03:26,607 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-01-28 07:03:26,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:03:26,621 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3fb1aa3e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:03:26,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:03:26,623 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-01-28 07:03:26,624 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:03:26,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:26,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:26,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:26,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash 773119812, now seen corresponding path program 1 times [2023-01-28 07:03:26,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:26,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886079602] [2023-01-28 07:03:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:26,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:27,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:27,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886079602] [2023-01-28 07:03:27,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886079602] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:27,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:27,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:03:27,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295227229] [2023-01-28 07:03:27,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:27,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:03:27,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:27,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:03:27,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:03:27,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:03:27,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2023-01-28 07:03:27,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:27,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:03:27,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:27,168 INFO L130 PetriNetUnfolder]: 381/628 cut-off events. [2023-01-28 07:03:27,168 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 07:03:27,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 628 events. 381/628 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2533 event pairs, 117 based on Foata normal form. 26/654 useless extension candidates. Maximal degree in co-relation 1292. Up to 439 conditions per place. [2023-01-28 07:03:27,176 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 22 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2023-01-28 07:03:27,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 120 flow [2023-01-28 07:03:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:03:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:03:27,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-01-28 07:03:27,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-01-28 07:03:27,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-01-28 07:03:27,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-01-28 07:03:27,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:27,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-01-28 07:03:27,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-01-28 07:03:27,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-01-28 07:03:27,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-01-28 07:03:27,199 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 237 transitions. [2023-01-28 07:03:27,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 120 flow [2023-01-28 07:03:27,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:03:27,202 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 76 flow [2023-01-28 07:03:27,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-01-28 07:03:27,205 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-01-28 07:03:27,206 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 76 flow [2023-01-28 07:03:27,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2023-01-28 07:03:27,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:27,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:27,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:03:27,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:27,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:27,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1803090255, now seen corresponding path program 1 times [2023-01-28 07:03:27,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:27,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007109242] [2023-01-28 07:03:27,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:27,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:27,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:27,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007109242] [2023-01-28 07:03:27,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007109242] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:27,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:27,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:03:27,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790228922] [2023-01-28 07:03:27,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:27,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:27,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:27,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:27,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:27,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:03:27,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2023-01-28 07:03:27,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:27,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:03:27,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:27,499 INFO L130 PetriNetUnfolder]: 359/594 cut-off events. [2023-01-28 07:03:27,500 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2023-01-28 07:03:27,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 594 events. 359/594 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2286 event pairs, 99 based on Foata normal form. 8/602 useless extension candidates. Maximal degree in co-relation 1560. Up to 339 conditions per place. [2023-01-28 07:03:27,503 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-01-28 07:03:27,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 164 flow [2023-01-28 07:03:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:03:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:03:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2023-01-28 07:03:27,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407801418439716 [2023-01-28 07:03:27,507 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 305 transitions. [2023-01-28 07:03:27,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 305 transitions. [2023-01-28 07:03:27,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:27,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 305 transitions. [2023-01-28 07:03:27,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 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) [2023-01-28 07:03:27,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-01-28 07:03:27,511 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-01-28 07:03:27,512 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 76 flow. Second operand 4 states and 305 transitions. [2023-01-28 07:03:27,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 164 flow [2023-01-28 07:03:27,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:03:27,515 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 104 flow [2023-01-28 07:03:27,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-01-28 07:03:27,516 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-01-28 07:03:27,516 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 104 flow [2023-01-28 07:03:27,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2023-01-28 07:03:27,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:27,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:27,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:03:27,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:27,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1803090937, now seen corresponding path program 1 times [2023-01-28 07:03:27,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:27,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318590122] [2023-01-28 07:03:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:27,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:27,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:27,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318590122] [2023-01-28 07:03:27,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318590122] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:27,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:27,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:03:27,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347983343] [2023-01-28 07:03:27,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:27,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:27,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:27,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:27,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:03:27,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2023-01-28 07:03:27,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:27,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:03:27,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:27,717 INFO L130 PetriNetUnfolder]: 336/559 cut-off events. [2023-01-28 07:03:27,717 INFO L131 PetriNetUnfolder]: For 430/430 co-relation queries the response was YES. [2023-01-28 07:03:27,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 559 events. 336/559 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2191 event pairs, 73 based on Foata normal form. 6/565 useless extension candidates. Maximal degree in co-relation 1584. Up to 360 conditions per place. [2023-01-28 07:03:27,720 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 29 selfloop transitions, 11 changer transitions 0/40 dead transitions. [2023-01-28 07:03:27,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 246 flow [2023-01-28 07:03:27,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:03:27,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:03:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-01-28 07:03:27,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5549645390070922 [2023-01-28 07:03:27,721 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-01-28 07:03:27,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-01-28 07:03:27,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:27,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-01-28 07:03:27,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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) [2023-01-28 07:03:27,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-01-28 07:03:27,723 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-01-28 07:03:27,724 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 104 flow. Second operand 4 states and 313 transitions. [2023-01-28 07:03:27,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 246 flow [2023-01-28 07:03:27,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:03:27,728 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 167 flow [2023-01-28 07:03:27,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-01-28 07:03:27,729 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-01-28 07:03:27,731 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 167 flow [2023-01-28 07:03:27,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2023-01-28 07:03:27,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:27,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:27,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:03:27,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:27,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:27,732 INFO L85 PathProgramCache]: Analyzing trace with hash -61224390, now seen corresponding path program 1 times [2023-01-28 07:03:27,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:27,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634909155] [2023-01-28 07:03:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:27,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:27,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:27,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634909155] [2023-01-28 07:03:27,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634909155] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:27,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:27,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:03:27,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184917411] [2023-01-28 07:03:27,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:27,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:03:27,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:27,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:03:27,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:03:27,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-01-28 07:03:27,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2023-01-28 07:03:27,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:27,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-01-28 07:03:27,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:27,908 INFO L130 PetriNetUnfolder]: 185/345 cut-off events. [2023-01-28 07:03:27,908 INFO L131 PetriNetUnfolder]: For 491/516 co-relation queries the response was YES. [2023-01-28 07:03:27,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 345 events. 185/345 cut-off events. For 491/516 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1454 event pairs, 50 based on Foata normal form. 21/354 useless extension candidates. Maximal degree in co-relation 1082. Up to 271 conditions per place. [2023-01-28 07:03:27,910 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 30 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-01-28 07:03:27,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 305 flow [2023-01-28 07:03:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:03:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:03:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2023-01-28 07:03:27,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697399527186762 [2023-01-28 07:03:27,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2023-01-28 07:03:27,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2023-01-28 07:03:27,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:27,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2023-01-28 07:03:27,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2023-01-28 07:03:27,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-01-28 07:03:27,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-01-28 07:03:27,917 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 167 flow. Second operand 3 states and 241 transitions. [2023-01-28 07:03:27,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 305 flow [2023-01-28 07:03:27,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 303 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 07:03:27,921 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 191 flow [2023-01-28 07:03:27,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2023-01-28 07:03:27,922 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-01-28 07:03:27,922 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 191 flow [2023-01-28 07:03:27,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2023-01-28 07:03:27,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:27,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:27,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:03:27,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:27,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:27,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1120047546, now seen corresponding path program 1 times [2023-01-28 07:03:27,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:27,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554998243] [2023-01-28 07:03:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:27,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:28,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:28,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554998243] [2023-01-28 07:03:28,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554998243] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:28,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:28,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:03:28,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602556770] [2023-01-28 07:03:28,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:28,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:28,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:28,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:28,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:28,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-01-28 07:03:28,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2023-01-28 07:03:28,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:28,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-01-28 07:03:28,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:28,119 INFO L130 PetriNetUnfolder]: 113/232 cut-off events. [2023-01-28 07:03:28,119 INFO L131 PetriNetUnfolder]: For 339/381 co-relation queries the response was YES. [2023-01-28 07:03:28,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889 conditions, 232 events. 113/232 cut-off events. For 339/381 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 892 event pairs, 19 based on Foata normal form. 43/270 useless extension candidates. Maximal degree in co-relation 868. Up to 103 conditions per place. [2023-01-28 07:03:28,121 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 37 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2023-01-28 07:03:28,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 397 flow [2023-01-28 07:03:28,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:03:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:03:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-01-28 07:03:28,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2023-01-28 07:03:28,123 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-01-28 07:03:28,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-01-28 07:03:28,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:28,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-01-28 07:03:28,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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) [2023-01-28 07:03:28,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-01-28 07:03:28,125 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-01-28 07:03:28,125 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 191 flow. Second operand 4 states and 321 transitions. [2023-01-28 07:03:28,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 397 flow [2023-01-28 07:03:28,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:03:28,127 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 227 flow [2023-01-28 07:03:28,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-01-28 07:03:28,128 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-01-28 07:03:28,128 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 227 flow [2023-01-28 07:03:28,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2023-01-28 07:03:28,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:28,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:28,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:03:28,129 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:28,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1625474379, now seen corresponding path program 1 times [2023-01-28 07:03:28,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:28,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296016893] [2023-01-28 07:03:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:28,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:28,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:28,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296016893] [2023-01-28 07:03:28,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296016893] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:28,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:28,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:03:28,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212919250] [2023-01-28 07:03:28,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:28,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:03:28,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:28,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:03:28,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:03:28,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-01-28 07:03:28,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 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) [2023-01-28 07:03:28,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:28,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-01-28 07:03:28,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:28,266 INFO L130 PetriNetUnfolder]: 94/191 cut-off events. [2023-01-28 07:03:28,266 INFO L131 PetriNetUnfolder]: For 471/538 co-relation queries the response was YES. [2023-01-28 07:03:28,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 191 events. 94/191 cut-off events. For 471/538 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 706 event pairs, 15 based on Foata normal form. 50/237 useless extension candidates. Maximal degree in co-relation 795. Up to 79 conditions per place. [2023-01-28 07:03:28,267 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 32 selfloop transitions, 10 changer transitions 2/50 dead transitions. [2023-01-28 07:03:28,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 421 flow [2023-01-28 07:03:28,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:03:28,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:03:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 393 transitions. [2023-01-28 07:03:28,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2023-01-28 07:03:28,269 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 393 transitions. [2023-01-28 07:03:28,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 393 transitions. [2023-01-28 07:03:28,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:28,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 393 transitions. [2023-01-28 07:03:28,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 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) [2023-01-28 07:03:28,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-01-28 07:03:28,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-01-28 07:03:28,271 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 227 flow. Second operand 5 states and 393 transitions. [2023-01-28 07:03:28,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 421 flow [2023-01-28 07:03:28,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 395 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 07:03:28,273 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 233 flow [2023-01-28 07:03:28,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-01-28 07:03:28,274 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2023-01-28 07:03:28,274 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 233 flow [2023-01-28 07:03:28,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 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) [2023-01-28 07:03:28,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:28,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:28,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:03:28,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:28,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:28,275 INFO L85 PathProgramCache]: Analyzing trace with hash -37915969, now seen corresponding path program 1 times [2023-01-28 07:03:28,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:28,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616886826] [2023-01-28 07:03:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:28,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:28,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:28,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616886826] [2023-01-28 07:03:28,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616886826] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:28,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:28,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:03:28,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698709558] [2023-01-28 07:03:28,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:28,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:28,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:28,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:28,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:28,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-01-28 07:03:28,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-01-28 07:03:28,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:28,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-01-28 07:03:28,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:28,439 INFO L130 PetriNetUnfolder]: 135/264 cut-off events. [2023-01-28 07:03:28,439 INFO L131 PetriNetUnfolder]: For 737/737 co-relation queries the response was YES. [2023-01-28 07:03:28,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174 conditions, 264 events. 135/264 cut-off events. For 737/737 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 964 event pairs, 10 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 1151. Up to 127 conditions per place. [2023-01-28 07:03:28,441 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 29 selfloop transitions, 10 changer transitions 25/64 dead transitions. [2023-01-28 07:03:28,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 565 flow [2023-01-28 07:03:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:03:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:03:28,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 376 transitions. [2023-01-28 07:03:28,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-01-28 07:03:28,442 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 376 transitions. [2023-01-28 07:03:28,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 376 transitions. [2023-01-28 07:03:28,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:28,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 376 transitions. [2023-01-28 07:03:28,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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) [2023-01-28 07:03:28,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-01-28 07:03:28,444 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-01-28 07:03:28,444 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 233 flow. Second operand 5 states and 376 transitions. [2023-01-28 07:03:28,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 565 flow [2023-01-28 07:03:28,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 509 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-01-28 07:03:28,448 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 224 flow [2023-01-28 07:03:28,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2023-01-28 07:03:28,448 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2023-01-28 07:03:28,448 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 224 flow [2023-01-28 07:03:28,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-01-28 07:03:28,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:28,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:28,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:03:28,449 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:28,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:28,449 INFO L85 PathProgramCache]: Analyzing trace with hash -539530639, now seen corresponding path program 2 times [2023-01-28 07:03:28,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:28,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098522330] [2023-01-28 07:03:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:28,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:28,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:28,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098522330] [2023-01-28 07:03:28,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098522330] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:28,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:28,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:03:28,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091212413] [2023-01-28 07:03:28,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:28,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:03:28,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:28,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:03:28,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:03:28,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:03:28,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-01-28 07:03:28,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:28,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:03:28,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:28,592 INFO L130 PetriNetUnfolder]: 53/130 cut-off events. [2023-01-28 07:03:28,593 INFO L131 PetriNetUnfolder]: For 393/393 co-relation queries the response was YES. [2023-01-28 07:03:28,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 130 events. 53/130 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 401 event pairs, 8 based on Foata normal form. 1/131 useless extension candidates. Maximal degree in co-relation 582. Up to 56 conditions per place. [2023-01-28 07:03:28,594 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 25 selfloop transitions, 7 changer transitions 22/54 dead transitions. [2023-01-28 07:03:28,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 466 flow [2023-01-28 07:03:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:03:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:03:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 449 transitions. [2023-01-28 07:03:28,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307328605200946 [2023-01-28 07:03:28,595 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 449 transitions. [2023-01-28 07:03:28,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 449 transitions. [2023-01-28 07:03:28,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:28,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 449 transitions. [2023-01-28 07:03:28,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 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) [2023-01-28 07:03:28,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2023-01-28 07:03:28,598 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2023-01-28 07:03:28,598 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 224 flow. Second operand 6 states and 449 transitions. [2023-01-28 07:03:28,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 466 flow [2023-01-28 07:03:28,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 434 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-01-28 07:03:28,600 INFO L231 Difference]: Finished difference. Result has 47 places, 28 transitions, 191 flow [2023-01-28 07:03:28,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2023-01-28 07:03:28,601 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2023-01-28 07:03:28,601 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 191 flow [2023-01-28 07:03:28,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-01-28 07:03:28,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:28,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:28,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:03:28,602 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:28,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash -724282675, now seen corresponding path program 3 times [2023-01-28 07:03:28,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:28,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42357214] [2023-01-28 07:03:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:28,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:28,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:28,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42357214] [2023-01-28 07:03:28,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42357214] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:28,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:28,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:03:28,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551111040] [2023-01-28 07:03:28,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:28,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:03:28,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:28,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:03:28,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:03:28,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:03:28,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-01-28 07:03:28,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:28,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:03:28,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:28,755 INFO L130 PetriNetUnfolder]: 34/85 cut-off events. [2023-01-28 07:03:28,755 INFO L131 PetriNetUnfolder]: For 266/266 co-relation queries the response was YES. [2023-01-28 07:03:28,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 85 events. 34/85 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 211 event pairs, 13 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 384. Up to 60 conditions per place. [2023-01-28 07:03:28,756 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-01-28 07:03:28,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 257 flow [2023-01-28 07:03:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:03:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:03:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2023-01-28 07:03:28,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2023-01-28 07:03:28,757 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 294 transitions. [2023-01-28 07:03:28,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 294 transitions. [2023-01-28 07:03:28,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:28,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 294 transitions. [2023-01-28 07:03:28,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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) [2023-01-28 07:03:28,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-01-28 07:03:28,759 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-01-28 07:03:28,759 INFO L175 Difference]: Start difference. First operand has 47 places, 28 transitions, 191 flow. Second operand 4 states and 294 transitions. [2023-01-28 07:03:28,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 257 flow [2023-01-28 07:03:28,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 218 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-01-28 07:03:28,760 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-01-28 07:03:28,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-01-28 07:03:28,760 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-01-28 07:03:28,761 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-01-28 07:03:28,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-01-28 07:03:28,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:03:28,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 07:03:28,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 07:03:28,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 07:03:28,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:03:28,764 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:28,766 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:03:28,766 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:03:28,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:03:28 BasicIcfg [2023-01-28 07:03:28,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:03:28,768 INFO L158 Benchmark]: Toolchain (without parser) took 4645.88ms. Allocated memory was 381.7MB in the beginning and 459.3MB in the end (delta: 77.6MB). Free memory was 349.9MB in the beginning and 409.1MB in the end (delta: -59.2MB). Peak memory consumption was 20.8MB. Max. memory is 16.0GB. [2023-01-28 07:03:28,768 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:03:28,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.36ms. Allocated memory is still 381.7MB. Free memory was 349.9MB in the beginning and 329.8MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 07:03:28,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.72ms. Allocated memory is still 381.7MB. Free memory was 329.8MB in the beginning and 327.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:03:28,769 INFO L158 Benchmark]: Boogie Preprocessor took 28.52ms. Allocated memory is still 381.7MB. Free memory was 327.8MB in the beginning and 326.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:03:28,769 INFO L158 Benchmark]: RCFGBuilder took 340.43ms. Allocated memory is still 381.7MB. Free memory was 326.2MB in the beginning and 312.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 07:03:28,769 INFO L158 Benchmark]: TraceAbstraction took 3845.48ms. Allocated memory was 381.7MB in the beginning and 459.3MB in the end (delta: 77.6MB). Free memory was 312.0MB in the beginning and 409.1MB in the end (delta: -97.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:03:28,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 379.36ms. Allocated memory is still 381.7MB. Free memory was 349.9MB in the beginning and 329.8MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.72ms. Allocated memory is still 381.7MB. Free memory was 329.8MB in the beginning and 327.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.52ms. Allocated memory is still 381.7MB. Free memory was 327.8MB in the beginning and 326.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 340.43ms. Allocated memory is still 381.7MB. Free memory was 326.2MB in the beginning and 312.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3845.48ms. Allocated memory was 381.7MB in the beginning and 459.3MB in the end (delta: 77.6MB). Free memory was 312.0MB in the beginning and 409.1MB in the end (delta: -97.1MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 77 PlacesBefore, 26 PlacesAfterwards, 68 TransitionsBefore, 17 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 1736 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1002, independent: 933, independent conditional: 0, independent unconditional: 933, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 545, independent: 521, independent conditional: 0, independent unconditional: 521, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1002, independent: 412, independent conditional: 0, independent unconditional: 412, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 545, unknown conditional: 0, unknown unconditional: 545] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 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 7 procedures, 105 locations, 4 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: 3.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 111 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 111 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 332 IncrementalHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 15 mSDtfsCounter, 332 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=6, InterpolantAutomatonStates: 38, 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, 1.1s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 479 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2023-01-28 07:03:28,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...