/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 05:00:30,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 05:00:30,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 05:00:30,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 05:00:30,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 05:00:30,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 05:00:30,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 05:00:30,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 05:00:30,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 05:00:30,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 05:00:30,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 05:00:30,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 05:00:30,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 05:00:30,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 05:00:30,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 05:00:30,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 05:00:30,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 05:00:30,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 05:00:30,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 05:00:30,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 05:00:30,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 05:00:30,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 05:00:30,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 05:00:30,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 05:00:30,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 05:00:30,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 05:00:30,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 05:00:30,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 05:00:30,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 05:00:30,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 05:00:30,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 05:00:30,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 05:00:30,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 05:00:30,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 05:00:30,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 05:00:30,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 05:00:30,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 05:00:30,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 05:00:30,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 05:00:30,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 05:00:30,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 05:00:30,486 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf [2022-01-19 05:00:30,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 05:00:30,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 05:00:30,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 05:00:30,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 05:00:30,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 05:00:30,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 05:00:30,521 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 05:00:30,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 05:00:30,521 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 05:00:30,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 05:00:30,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 05:00:30,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 05:00:30,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 05:00:30,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 05:00:30,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 05:00:30,522 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 05:00:30,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 05:00:30,523 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 05:00:30,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 05:00:30,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 05:00:30,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 05:00:30,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 05:00:30,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 05:00:30,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:00:30,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 05:00:30,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 05:00:30,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 05:00:30,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 05:00:30,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 05:00:30,524 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 05:00:30,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 05:00:30,525 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 05:00:30,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 05:00:30,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 05:00:30,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 05:00:30,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 05:00:30,775 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 05:00:30,779 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 05:00:30,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2022-01-19 05:00:30,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bea8dc93/96f56c17adb14c098e6099a661ad6070/FLAGf0942eed1 [2022-01-19 05:00:31,300 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 05:00:31,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2022-01-19 05:00:31,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bea8dc93/96f56c17adb14c098e6099a661ad6070/FLAGf0942eed1 [2022-01-19 05:00:31,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bea8dc93/96f56c17adb14c098e6099a661ad6070 [2022-01-19 05:00:31,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 05:00:31,339 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 05:00:31,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 05:00:31,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 05:00:31,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 05:00:31,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:00:31" (1/1) ... [2022-01-19 05:00:31,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518639e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31, skipping insertion in model container [2022-01-19 05:00:31,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:00:31" (1/1) ... [2022-01-19 05:00:31,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 05:00:31,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 05:00:31,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i[945,958] [2022-01-19 05:00:31,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:00:31,696 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 05:00:31,708 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i[945,958] [2022-01-19 05:00:31,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:00:31,791 INFO L208 MainTranslator]: Completed translation [2022-01-19 05:00:31,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31 WrapperNode [2022-01-19 05:00:31,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 05:00:31,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 05:00:31,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 05:00:31,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 05:00:31,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31" (1/1) ... [2022-01-19 05:00:31,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31" (1/1) ... [2022-01-19 05:00:31,836 INFO L137 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-01-19 05:00:31,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 05:00:31,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 05:00:31,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 05:00:31,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 05:00:31,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31" (1/1) ... [2022-01-19 05:00:31,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31" (1/1) ... [2022-01-19 05:00:31,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31" (1/1) ... [2022-01-19 05:00:31,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31" (1/1) ... [2022-01-19 05:00:31,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31" (1/1) ... [2022-01-19 05:00:31,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31" (1/1) ... [2022-01-19 05:00:31,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31" (1/1) ... [2022-01-19 05:00:31,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 05:00:31,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 05:00:31,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 05:00:31,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 05:00:31,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31" (1/1) ... [2022-01-19 05:00:31,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:00:31,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:00:31,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 05:00:31,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 05:00:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 05:00:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 05:00:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 05:00:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 05:00:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 05:00:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 05:00:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 05:00:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 05:00:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 05:00:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-19 05:00:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-19 05:00:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 05:00:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 05:00:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 05:00:31,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 05:00:31,940 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 05:00:32,067 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 05:00:32,068 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 05:00:32,270 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 05:00:32,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 05:00:32,277 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 05:00:32,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:00:32 BoogieIcfgContainer [2022-01-19 05:00:32,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 05:00:32,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 05:00:32,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 05:00:32,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 05:00:32,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 05:00:31" (1/3) ... [2022-01-19 05:00:32,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6d314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:00:32, skipping insertion in model container [2022-01-19 05:00:32,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:31" (2/3) ... [2022-01-19 05:00:32,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6d314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:00:32, skipping insertion in model container [2022-01-19 05:00:32,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:00:32" (3/3) ... [2022-01-19 05:00:32,288 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2022-01-19 05:00:32,292 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 05:00:32,292 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 05:00:32,293 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 05:00:32,344 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,344 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,344 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,344 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,348 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,349 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,349 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,349 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,350 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,350 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,351 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,351 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,352 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,352 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,352 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,352 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,352 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,352 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,353 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,353 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,353 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,353 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,354 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,354 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,356 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,356 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,356 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,356 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,357 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,357 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,358 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,358 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,358 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,359 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,360 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,360 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,367 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,367 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,367 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,368 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,370 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,370 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,371 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,371 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,372 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,372 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,372 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,373 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:32,374 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 05:00:32,425 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 05:00:32,436 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 05:00:32,437 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 05:00:32,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 195 flow [2022-01-19 05:00:32,512 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2022-01-19 05:00:32,512 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:00:32,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-01-19 05:00:32,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 195 flow [2022-01-19 05:00:32,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2022-01-19 05:00:32,545 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2022-01-19 05:00:32,546 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:00:32,546 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:32,547 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:32,547 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:32,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:32,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1419924202, now seen corresponding path program 1 times [2022-01-19 05:00:32,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:32,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042456000] [2022-01-19 05:00:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:32,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:33,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:33,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042456000] [2022-01-19 05:00:33,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042456000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:33,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:33,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:33,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466867175] [2022-01-19 05:00:33,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:33,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:33,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:33,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:33,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:33,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-01-19 05:00:33,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:33,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:33,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-01-19 05:00:33,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:33,430 INFO L129 PetriNetUnfolder]: 178/534 cut-off events. [2022-01-19 05:00:33,430 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-19 05:00:33,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 534 events. 178/534 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2896 event pairs, 26 based on Foata normal form. 19/531 useless extension candidates. Maximal degree in co-relation 845. Up to 117 conditions per place. [2022-01-19 05:00:33,441 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 19 selfloop transitions, 5 changer transitions 35/115 dead transitions. [2022-01-19 05:00:33,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 357 flow [2022-01-19 05:00:33,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 05:00:33,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 05:00:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 975 transitions. [2022-01-19 05:00:33,472 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-01-19 05:00:33,473 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 975 transitions. [2022-01-19 05:00:33,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 975 transitions. [2022-01-19 05:00:33,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:33,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 975 transitions. [2022-01-19 05:00:33,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.0) internal successors, (975), 13 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:33,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:33,494 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:33,495 INFO L186 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 13 states and 975 transitions. [2022-01-19 05:00:33,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 357 flow [2022-01-19 05:00:33,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 115 transitions, 354 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 05:00:33,501 INFO L242 Difference]: Finished difference. Result has 103 places, 75 transitions, 222 flow [2022-01-19 05:00:33,503 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=222, PETRI_PLACES=103, PETRI_TRANSITIONS=75} [2022-01-19 05:00:33,506 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 21 predicate places. [2022-01-19 05:00:33,506 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 75 transitions, 222 flow [2022-01-19 05:00:33,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:33,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:33,507 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:33,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 05:00:33,508 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:33,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:33,508 INFO L85 PathProgramCache]: Analyzing trace with hash 273314153, now seen corresponding path program 1 times [2022-01-19 05:00:33,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:33,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477021417] [2022-01-19 05:00:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:33,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:33,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:33,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477021417] [2022-01-19 05:00:33,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477021417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:33,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:33,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:33,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387105450] [2022-01-19 05:00:33,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:33,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:33,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:33,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:33,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:33,684 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-01-19 05:00:33,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 75 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:33,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:33,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-01-19 05:00:33,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:33,944 INFO L129 PetriNetUnfolder]: 99/391 cut-off events. [2022-01-19 05:00:33,944 INFO L130 PetriNetUnfolder]: For 830/961 co-relation queries the response was YES. [2022-01-19 05:00:33,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 391 events. 99/391 cut-off events. For 830/961 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1965 event pairs, 10 based on Foata normal form. 12/392 useless extension candidates. Maximal degree in co-relation 1125. Up to 95 conditions per place. [2022-01-19 05:00:33,948 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 21 selfloop transitions, 12 changer transitions 34/123 dead transitions. [2022-01-19 05:00:33,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 123 transitions, 704 flow [2022-01-19 05:00:33,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 05:00:33,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 05:00:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 977 transitions. [2022-01-19 05:00:33,954 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8350427350427351 [2022-01-19 05:00:33,954 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 977 transitions. [2022-01-19 05:00:33,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 977 transitions. [2022-01-19 05:00:33,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:33,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 977 transitions. [2022-01-19 05:00:33,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.15384615384616) internal successors, (977), 13 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:33,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:33,961 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:33,961 INFO L186 Difference]: Start difference. First operand has 103 places, 75 transitions, 222 flow. Second operand 13 states and 977 transitions. [2022-01-19 05:00:33,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 123 transitions, 704 flow [2022-01-19 05:00:33,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 123 transitions, 652 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-01-19 05:00:33,968 INFO L242 Difference]: Finished difference. Result has 113 places, 80 transitions, 311 flow [2022-01-19 05:00:33,968 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=311, PETRI_PLACES=113, PETRI_TRANSITIONS=80} [2022-01-19 05:00:33,969 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 31 predicate places. [2022-01-19 05:00:33,969 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 80 transitions, 311 flow [2022-01-19 05:00:33,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:33,970 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:33,970 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:33,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 05:00:33,970 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:33,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:33,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1950295604, now seen corresponding path program 1 times [2022-01-19 05:00:33,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:33,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738808781] [2022-01-19 05:00:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:33,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:34,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:34,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738808781] [2022-01-19 05:00:34,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738808781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:34,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:34,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:34,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807700897] [2022-01-19 05:00:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:34,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:34,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:34,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:34,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:34,094 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 90 [2022-01-19 05:00:34,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 80 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:34,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:34,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 90 [2022-01-19 05:00:34,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:34,228 INFO L129 PetriNetUnfolder]: 62/351 cut-off events. [2022-01-19 05:00:34,228 INFO L130 PetriNetUnfolder]: For 1076/1308 co-relation queries the response was YES. [2022-01-19 05:00:34,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 351 events. 62/351 cut-off events. For 1076/1308 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1940 event pairs, 24 based on Foata normal form. 8/335 useless extension candidates. Maximal degree in co-relation 1025. Up to 67 conditions per place. [2022-01-19 05:00:34,233 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 15 selfloop transitions, 6 changer transitions 15/95 dead transitions. [2022-01-19 05:00:34,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 95 transitions, 512 flow [2022-01-19 05:00:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 05:00:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 05:00:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2022-01-19 05:00:34,235 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8507936507936508 [2022-01-19 05:00:34,235 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2022-01-19 05:00:34,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2022-01-19 05:00:34,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:34,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2022-01-19 05:00:34,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:34,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:34,238 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:34,238 INFO L186 Difference]: Start difference. First operand has 113 places, 80 transitions, 311 flow. Second operand 7 states and 536 transitions. [2022-01-19 05:00:34,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 95 transitions, 512 flow [2022-01-19 05:00:34,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 470 flow, removed 21 selfloop flow, removed 12 redundant places. [2022-01-19 05:00:34,248 INFO L242 Difference]: Finished difference. Result has 102 places, 78 transitions, 288 flow [2022-01-19 05:00:34,248 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=288, PETRI_PLACES=102, PETRI_TRANSITIONS=78} [2022-01-19 05:00:34,250 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 20 predicate places. [2022-01-19 05:00:34,250 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 78 transitions, 288 flow [2022-01-19 05:00:34,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:34,251 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:34,251 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:34,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 05:00:34,255 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:34,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:34,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2131656236, now seen corresponding path program 2 times [2022-01-19 05:00:34,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:34,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87035601] [2022-01-19 05:00:34,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:34,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:34,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:34,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87035601] [2022-01-19 05:00:34,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87035601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:34,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:34,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:00:34,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925476609] [2022-01-19 05:00:34,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:34,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:00:34,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:34,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:00:34,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:00:34,420 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-19 05:00:34,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 78 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:34,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:34,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-19 05:00:34,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:34,627 INFO L129 PetriNetUnfolder]: 374/995 cut-off events. [2022-01-19 05:00:34,627 INFO L130 PetriNetUnfolder]: For 624/644 co-relation queries the response was YES. [2022-01-19 05:00:34,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 995 events. 374/995 cut-off events. For 624/644 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6945 event pairs, 26 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 2089. Up to 246 conditions per place. [2022-01-19 05:00:34,637 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 29 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2022-01-19 05:00:34,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 110 transitions, 448 flow [2022-01-19 05:00:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 05:00:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 05:00:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-01-19 05:00:34,639 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8644444444444445 [2022-01-19 05:00:34,639 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-01-19 05:00:34,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-01-19 05:00:34,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:34,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-01-19 05:00:34,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:34,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:34,643 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:34,643 INFO L186 Difference]: Start difference. First operand has 102 places, 78 transitions, 288 flow. Second operand 10 states and 778 transitions. [2022-01-19 05:00:34,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 110 transitions, 448 flow [2022-01-19 05:00:34,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 110 transitions, 413 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-01-19 05:00:34,650 INFO L242 Difference]: Finished difference. Result has 107 places, 93 transitions, 373 flow [2022-01-19 05:00:34,651 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=373, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2022-01-19 05:00:34,652 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 25 predicate places. [2022-01-19 05:00:34,652 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 373 flow [2022-01-19 05:00:34,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:34,652 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:34,652 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:34,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 05:00:34,653 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:34,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash 243950234, now seen corresponding path program 1 times [2022-01-19 05:00:34,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:34,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835523746] [2022-01-19 05:00:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:34,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:34,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:34,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835523746] [2022-01-19 05:00:34,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835523746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:34,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:34,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:34,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555831671] [2022-01-19 05:00:34,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:34,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:34,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:34,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:34,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:34,801 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-19 05:00:34,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 373 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:34,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:34,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-19 05:00:34,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:35,023 INFO L129 PetriNetUnfolder]: 332/917 cut-off events. [2022-01-19 05:00:35,023 INFO L130 PetriNetUnfolder]: For 2156/2286 co-relation queries the response was YES. [2022-01-19 05:00:35,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 917 events. 332/917 cut-off events. For 2156/2286 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6643 event pairs, 4 based on Foata normal form. 56/912 useless extension candidates. Maximal degree in co-relation 3036. Up to 338 conditions per place. [2022-01-19 05:00:35,031 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 26 selfloop transitions, 32 changer transitions 9/131 dead transitions. [2022-01-19 05:00:35,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 131 transitions, 743 flow [2022-01-19 05:00:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 05:00:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 05:00:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1012 transitions. [2022-01-19 05:00:35,034 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.864957264957265 [2022-01-19 05:00:35,034 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1012 transitions. [2022-01-19 05:00:35,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1012 transitions. [2022-01-19 05:00:35,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:35,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1012 transitions. [2022-01-19 05:00:35,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.84615384615384) internal successors, (1012), 13 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,042 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,042 INFO L186 Difference]: Start difference. First operand has 107 places, 93 transitions, 373 flow. Second operand 13 states and 1012 transitions. [2022-01-19 05:00:35,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 131 transitions, 743 flow [2022-01-19 05:00:35,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 131 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 05:00:35,049 INFO L242 Difference]: Finished difference. Result has 122 places, 113 transitions, 614 flow [2022-01-19 05:00:35,050 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=614, PETRI_PLACES=122, PETRI_TRANSITIONS=113} [2022-01-19 05:00:35,052 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 40 predicate places. [2022-01-19 05:00:35,052 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 113 transitions, 614 flow [2022-01-19 05:00:35,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,052 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:35,052 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:35,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 05:00:35,053 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:35,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:35,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1857817141, now seen corresponding path program 1 times [2022-01-19 05:00:35,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:35,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537828103] [2022-01-19 05:00:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:35,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:35,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:35,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537828103] [2022-01-19 05:00:35,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537828103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:35,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:35,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 05:00:35,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649237819] [2022-01-19 05:00:35,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:35,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 05:00:35,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:35,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 05:00:35,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 05:00:35,178 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-19 05:00:35,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 113 transitions, 614 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:35,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-19 05:00:35,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:35,437 INFO L129 PetriNetUnfolder]: 259/796 cut-off events. [2022-01-19 05:00:35,437 INFO L130 PetriNetUnfolder]: For 3199/3365 co-relation queries the response was YES. [2022-01-19 05:00:35,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 796 events. 259/796 cut-off events. For 3199/3365 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6012 event pairs, 0 based on Foata normal form. 61/799 useless extension candidates. Maximal degree in co-relation 3165. Up to 269 conditions per place. [2022-01-19 05:00:35,445 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 22 selfloop transitions, 36 changer transitions 20/142 dead transitions. [2022-01-19 05:00:35,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 142 transitions, 956 flow [2022-01-19 05:00:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 05:00:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 05:00:35,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1230 transitions. [2022-01-19 05:00:35,448 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8541666666666666 [2022-01-19 05:00:35,448 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1230 transitions. [2022-01-19 05:00:35,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1230 transitions. [2022-01-19 05:00:35,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:35,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1230 transitions. [2022-01-19 05:00:35,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 76.875) internal successors, (1230), 16 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 90.0) internal successors, (1530), 17 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,455 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 90.0) internal successors, (1530), 17 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,455 INFO L186 Difference]: Start difference. First operand has 122 places, 113 transitions, 614 flow. Second operand 16 states and 1230 transitions. [2022-01-19 05:00:35,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 142 transitions, 956 flow [2022-01-19 05:00:35,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 142 transitions, 793 flow, removed 67 selfloop flow, removed 7 redundant places. [2022-01-19 05:00:35,477 INFO L242 Difference]: Finished difference. Result has 137 places, 113 transitions, 601 flow [2022-01-19 05:00:35,478 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=601, PETRI_PLACES=137, PETRI_TRANSITIONS=113} [2022-01-19 05:00:35,480 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 55 predicate places. [2022-01-19 05:00:35,480 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 113 transitions, 601 flow [2022-01-19 05:00:35,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,480 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:35,481 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:35,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 05:00:35,481 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:35,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:35,482 INFO L85 PathProgramCache]: Analyzing trace with hash -290666129, now seen corresponding path program 1 times [2022-01-19 05:00:35,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:35,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564023075] [2022-01-19 05:00:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:35,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:35,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:35,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564023075] [2022-01-19 05:00:35,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564023075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:35,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:35,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:35,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409572204] [2022-01-19 05:00:35,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:35,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:35,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:35,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:35,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:35,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-19 05:00:35,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 113 transitions, 601 flow. Second operand has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:35,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-19 05:00:35,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:35,698 INFO L129 PetriNetUnfolder]: 180/778 cut-off events. [2022-01-19 05:00:35,698 INFO L130 PetriNetUnfolder]: For 1682/1719 co-relation queries the response was YES. [2022-01-19 05:00:35,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2289 conditions, 778 events. 180/778 cut-off events. For 1682/1719 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6489 event pairs, 0 based on Foata normal form. 1/731 useless extension candidates. Maximal degree in co-relation 2231. Up to 103 conditions per place. [2022-01-19 05:00:35,704 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2022-01-19 05:00:35,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 114 transitions, 647 flow [2022-01-19 05:00:35,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 05:00:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 05:00:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 527 transitions. [2022-01-19 05:00:35,705 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8365079365079365 [2022-01-19 05:00:35,705 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 527 transitions. [2022-01-19 05:00:35,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 527 transitions. [2022-01-19 05:00:35,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:35,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 527 transitions. [2022-01-19 05:00:35,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,709 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,709 INFO L186 Difference]: Start difference. First operand has 137 places, 113 transitions, 601 flow. Second operand 7 states and 527 transitions. [2022-01-19 05:00:35,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 114 transitions, 647 flow [2022-01-19 05:00:35,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 114 transitions, 572 flow, removed 13 selfloop flow, removed 14 redundant places. [2022-01-19 05:00:35,731 INFO L242 Difference]: Finished difference. Result has 124 places, 0 transitions, 0 flow [2022-01-19 05:00:35,732 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=124, PETRI_TRANSITIONS=0} [2022-01-19 05:00:35,732 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 42 predicate places. [2022-01-19 05:00:35,732 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 0 transitions, 0 flow [2022-01-19 05:00:35,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:35,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 05:00:35,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 05:00:35,736 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 05:00:35,736 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 05:00:35,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 05:00:35,739 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-01-19 05:00:35,741 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 05:00:35,741 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 05:00:35,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 05:00:35 BasicIcfg [2022-01-19 05:00:35,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 05:00:35,744 INFO L158 Benchmark]: Toolchain (without parser) took 4405.23ms. Allocated memory was 379.6MB in the beginning and 484.4MB in the end (delta: 104.9MB). Free memory was 323.6MB in the beginning and 207.7MB in the end (delta: 115.9MB). Peak memory consumption was 222.4MB. Max. memory is 16.0GB. [2022-01-19 05:00:35,748 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 379.6MB. Free memory is still 341.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 05:00:35,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.13ms. Allocated memory was 379.6MB in the beginning and 484.4MB in the end (delta: 104.9MB). Free memory was 323.3MB in the beginning and 446.8MB in the end (delta: -123.4MB). Peak memory consumption was 7.3MB. Max. memory is 16.0GB. [2022-01-19 05:00:35,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.54ms. Allocated memory is still 484.4MB. Free memory was 446.8MB in the beginning and 444.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:00:35,751 INFO L158 Benchmark]: Boogie Preprocessor took 32.55ms. Allocated memory is still 484.4MB. Free memory was 444.6MB in the beginning and 443.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:00:35,751 INFO L158 Benchmark]: RCFGBuilder took 408.86ms. Allocated memory is still 484.4MB. Free memory was 443.1MB in the beginning and 428.9MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 05:00:35,751 INFO L158 Benchmark]: TraceAbstraction took 3463.13ms. Allocated memory is still 484.4MB. Free memory was 428.9MB in the beginning and 207.7MB in the end (delta: 221.3MB). Peak memory consumption was 224.4MB. Max. memory is 16.0GB. [2022-01-19 05:00:35,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 379.6MB. Free memory is still 341.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 452.13ms. Allocated memory was 379.6MB in the beginning and 484.4MB in the end (delta: 104.9MB). Free memory was 323.3MB in the beginning and 446.8MB in the end (delta: -123.4MB). Peak memory consumption was 7.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.54ms. Allocated memory is still 484.4MB. Free memory was 446.8MB in the beginning and 444.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.55ms. Allocated memory is still 484.4MB. Free memory was 444.6MB in the beginning and 443.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 408.86ms. Allocated memory is still 484.4MB. Free memory was 443.1MB in the beginning and 428.9MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3463.13ms. Allocated memory is still 484.4MB. Free memory was 428.9MB in the beginning and 207.7MB in the end (delta: 221.3MB). Peak memory consumption was 224.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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, 112 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: 3.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 277 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 277 mSDsluCounter, 328 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 342 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 449 IncrementalHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 79 mSDtfsCounter, 449 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=5, InterpolantAutomatonStates: 79, 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, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 404 ConstructedInterpolants, 0 QuantifiedInterpolants, 1520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 05:00:35,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...