/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/weaver/popl20-send-receive.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 08:58:34,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 08:58:34,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 08:58:34,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 08:58:34,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 08:58:34,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 08:58:34,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 08:58:34,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 08:58:34,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 08:58:34,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 08:58:34,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 08:58:34,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 08:58:34,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 08:58:34,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 08:58:34,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 08:58:34,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 08:58:34,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 08:58:34,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 08:58:34,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 08:58:34,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 08:58:34,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 08:58:34,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 08:58:34,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 08:58:34,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 08:58:34,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 08:58:34,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 08:58:34,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 08:58:34,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 08:58:34,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 08:58:34,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 08:58:34,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 08:58:34,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 08:58:34,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 08:58:34,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 08:58:34,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 08:58:34,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 08:58:34,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 08:58:34,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 08:58:34,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 08:58:34,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 08:58:34,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 08:58:34,528 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 08:58:34,544 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 08:58:34,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 08:58:34,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 08:58:34,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 08:58:34,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 08:58:34,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 08:58:34,546 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 08:58:34,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 08:58:34,546 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 08:58:34,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 08:58:34,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 08:58:34,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 08:58:34,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 08:58:34,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 08:58:34,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 08:58:34,546 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 08:58:34,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 08:58:34,547 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 08:58:34,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 08:58:34,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 08:58:34,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 08:58:34,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 08:58:34,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 08:58:34,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 08:58:34,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 08:58:34,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 08:58:34,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 08:58:34,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 08:58:34,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 08:58:34,548 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 08:58:34,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 08:58:34,548 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 08:58:34,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 08:58:34,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 08:58:34,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 08:58:34,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 08:58:34,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 08:58:34,704 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 08:58:34,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive.wvr.c [2022-01-19 08:58:34,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fd7421b8/61bfcc49d0f84440996609fef24a6e12/FLAGcadc29357 [2022-01-19 08:58:35,109 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 08:58:35,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive.wvr.c [2022-01-19 08:58:35,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fd7421b8/61bfcc49d0f84440996609fef24a6e12/FLAGcadc29357 [2022-01-19 08:58:35,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fd7421b8/61bfcc49d0f84440996609fef24a6e12 [2022-01-19 08:58:35,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 08:58:35,124 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 08:58:35,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 08:58:35,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 08:58:35,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 08:58:35,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 08:58:35" (1/1) ... [2022-01-19 08:58:35,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2d2e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35, skipping insertion in model container [2022-01-19 08:58:35,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 08:58:35" (1/1) ... [2022-01-19 08:58:35,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 08:58:35,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 08:58:35,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive.wvr.c[3107,3120] [2022-01-19 08:58:35,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 08:58:35,298 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 08:58:35,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive.wvr.c[3107,3120] [2022-01-19 08:58:35,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 08:58:35,324 INFO L208 MainTranslator]: Completed translation [2022-01-19 08:58:35,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35 WrapperNode [2022-01-19 08:58:35,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 08:58:35,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 08:58:35,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 08:58:35,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 08:58:35,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35" (1/1) ... [2022-01-19 08:58:35,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35" (1/1) ... [2022-01-19 08:58:35,352 INFO L137 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 161 [2022-01-19 08:58:35,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 08:58:35,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 08:58:35,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 08:58:35,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 08:58:35,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35" (1/1) ... [2022-01-19 08:58:35,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35" (1/1) ... [2022-01-19 08:58:35,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35" (1/1) ... [2022-01-19 08:58:35,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35" (1/1) ... [2022-01-19 08:58:35,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35" (1/1) ... [2022-01-19 08:58:35,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35" (1/1) ... [2022-01-19 08:58:35,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35" (1/1) ... [2022-01-19 08:58:35,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 08:58:35,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 08:58:35,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 08:58:35,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 08:58:35,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35" (1/1) ... [2022-01-19 08:58:35,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 08:58:35,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 08:58:35,393 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 08:58:35,405 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 08:58:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 08:58:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 08:58:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 08:58:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 08:58:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 08:58:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 08:58:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 08:58:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 08:58:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 08:58:35,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 08:58:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 08:58:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 08:58:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 08:58:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 08:58:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 08:58:35,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 08:58:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 08:58:35,420 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 08:58:35,476 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 08:58:35,477 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 08:58:35,643 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 08:58:35,716 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 08:58:35,716 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 08:58:35,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 08:58:35 BoogieIcfgContainer [2022-01-19 08:58:35,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 08:58:35,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 08:58:35,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 08:58:35,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 08:58:35,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 08:58:35" (1/3) ... [2022-01-19 08:58:35,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12871a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 08:58:35, skipping insertion in model container [2022-01-19 08:58:35,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:58:35" (2/3) ... [2022-01-19 08:58:35,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12871a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 08:58:35, skipping insertion in model container [2022-01-19 08:58:35,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 08:58:35" (3/3) ... [2022-01-19 08:58:35,725 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2022-01-19 08:58:35,728 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 08:58:35,728 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 08:58:35,728 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 08:58:35,758 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,759 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,759 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,759 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,760 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,760 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,760 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,760 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,760 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,760 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,761 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,761 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,761 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,761 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,762 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,762 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,762 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,762 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,766 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,769 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,769 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,780 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,780 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,780 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,780 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,782 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,783 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:58:35,801 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 08:58:35,848 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 08:58:35,855 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 08:58:35,856 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 08:58:35,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 142 places, 142 transitions, 308 flow [2022-01-19 08:58:35,935 INFO L129 PetriNetUnfolder]: 10/139 cut-off events. [2022-01-19 08:58:35,936 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 08:58:35,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 10/139 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 94 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2022-01-19 08:58:35,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 142 transitions, 308 flow [2022-01-19 08:58:35,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 128 transitions, 274 flow [2022-01-19 08:58:35,974 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2022-01-19 08:58:35,974 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 08:58:35,974 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:58:35,975 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, 1, 1, 1, 1, 1, 1, 1, 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 08:58:35,975 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 08:58:35,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:58:35,979 INFO L85 PathProgramCache]: Analyzing trace with hash 606146580, now seen corresponding path program 1 times [2022-01-19 08:58:35,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:58:35,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483770360] [2022-01-19 08:58:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:58:35,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:58:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:58:36,175 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 08:58:36,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:58:36,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483770360] [2022-01-19 08:58:36,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483770360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 08:58:36,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 08:58:36,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 08:58:36,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519904835] [2022-01-19 08:58:36,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:58:36,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 08:58:36,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:58:36,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 08:58:36,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 08:58:36,212 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 142 [2022-01-19 08:58:36,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 128 transitions, 274 flow. Second operand has 2 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 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 08:58:36,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:58:36,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 142 [2022-01-19 08:58:36,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:58:36,287 INFO L129 PetriNetUnfolder]: 21/174 cut-off events. [2022-01-19 08:58:36,287 INFO L130 PetriNetUnfolder]: For 26/27 co-relation queries the response was YES. [2022-01-19 08:58:36,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 174 events. 21/174 cut-off events. For 26/27 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 309 event pairs, 7 based on Foata normal form. 20/176 useless extension candidates. Maximal degree in co-relation 141. Up to 33 conditions per place. [2022-01-19 08:58:36,292 INFO L132 encePairwiseOnDemand]: 136/142 looper letters, 9 selfloop transitions, 0 changer transitions 2/122 dead transitions. [2022-01-19 08:58:36,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 280 flow [2022-01-19 08:58:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 08:58:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 08:58:36,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 267 transitions. [2022-01-19 08:58:36,306 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9401408450704225 [2022-01-19 08:58:36,307 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 267 transitions. [2022-01-19 08:58:36,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 267 transitions. [2022-01-19 08:58:36,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:58:36,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 267 transitions. [2022-01-19 08:58:36,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 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 08:58:36,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 08:58:36,323 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 08:58:36,324 INFO L186 Difference]: Start difference. First operand has 128 places, 128 transitions, 274 flow. Second operand 2 states and 267 transitions. [2022-01-19 08:58:36,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 280 flow [2022-01-19 08:58:36,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 122 transitions, 268 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 08:58:36,335 INFO L242 Difference]: Finished difference. Result has 123 places, 120 transitions, 246 flow [2022-01-19 08:58:36,336 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=246, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2022-01-19 08:58:36,341 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, -5 predicate places. [2022-01-19 08:58:36,341 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 246 flow [2022-01-19 08:58:36,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 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 08:58:36,342 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:58:36,343 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, 1, 1, 1, 1, 1, 1, 1, 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 08:58:36,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 08:58:36,343 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 08:58:36,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:58:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash -56616445, now seen corresponding path program 1 times [2022-01-19 08:58:36,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:58:36,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663818407] [2022-01-19 08:58:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:58:36,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:58:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:58:36,481 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 08:58:36,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:58:36,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663818407] [2022-01-19 08:58:36,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663818407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 08:58:36,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 08:58:36,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 08:58:36,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979697254] [2022-01-19 08:58:36,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:58:36,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 08:58:36,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:58:36,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 08:58:36,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 08:58:36,485 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 142 [2022-01-19 08:58:36,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 08:58:36,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:58:36,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 142 [2022-01-19 08:58:36,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:58:36,586 INFO L129 PetriNetUnfolder]: 108/431 cut-off events. [2022-01-19 08:58:36,587 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-01-19 08:58:36,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 431 events. 108/431 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1909 event pairs, 16 based on Foata normal form. 0/390 useless extension candidates. Maximal degree in co-relation 621. Up to 65 conditions per place. [2022-01-19 08:58:36,590 INFO L132 encePairwiseOnDemand]: 137/142 looper letters, 36 selfloop transitions, 5 changer transitions 0/143 dead transitions. [2022-01-19 08:58:36,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 143 transitions, 378 flow [2022-01-19 08:58:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 08:58:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 08:58:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 628 transitions. [2022-01-19 08:58:36,593 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8845070422535212 [2022-01-19 08:58:36,593 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 628 transitions. [2022-01-19 08:58:36,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 628 transitions. [2022-01-19 08:58:36,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:58:36,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 628 transitions. [2022-01-19 08:58:36,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 08:58:36,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 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 08:58:36,597 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 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 08:58:36,597 INFO L186 Difference]: Start difference. First operand has 123 places, 120 transitions, 246 flow. Second operand 5 states and 628 transitions. [2022-01-19 08:58:36,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 143 transitions, 378 flow [2022-01-19 08:58:36,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 143 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 08:58:36,601 INFO L242 Difference]: Finished difference. Result has 128 places, 123 transitions, 277 flow [2022-01-19 08:58:36,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=277, PETRI_PLACES=128, PETRI_TRANSITIONS=123} [2022-01-19 08:58:36,602 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 0 predicate places. [2022-01-19 08:58:36,602 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 123 transitions, 277 flow [2022-01-19 08:58:36,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 08:58:36,603 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:58:36,603 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, 1, 1, 1, 1, 1, 1, 1, 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 08:58:36,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 08:58:36,604 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 08:58:36,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:58:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2003606569, now seen corresponding path program 2 times [2022-01-19 08:58:36,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:58:36,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708187830] [2022-01-19 08:58:36,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:58:36,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:58:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:58:36,680 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 08:58:36,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:58:36,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708187830] [2022-01-19 08:58:36,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708187830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 08:58:36,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 08:58:36,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 08:58:36,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833328104] [2022-01-19 08:58:36,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:58:36,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 08:58:36,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:58:36,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 08:58:36,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 08:58:36,683 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 142 [2022-01-19 08:58:36,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 123 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 08:58:36,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:58:36,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 142 [2022-01-19 08:58:36,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:58:36,769 INFO L129 PetriNetUnfolder]: 125/405 cut-off events. [2022-01-19 08:58:36,769 INFO L130 PetriNetUnfolder]: For 91/94 co-relation queries the response was YES. [2022-01-19 08:58:36,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 405 events. 125/405 cut-off events. For 91/94 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1630 event pairs, 12 based on Foata normal form. 3/353 useless extension candidates. Maximal degree in co-relation 716. Up to 84 conditions per place. [2022-01-19 08:58:36,773 INFO L132 encePairwiseOnDemand]: 137/142 looper letters, 37 selfloop transitions, 7 changer transitions 0/146 dead transitions. [2022-01-19 08:58:36,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 435 flow [2022-01-19 08:58:36,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 08:58:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 08:58:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 627 transitions. [2022-01-19 08:58:36,775 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8830985915492958 [2022-01-19 08:58:36,775 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 627 transitions. [2022-01-19 08:58:36,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 627 transitions. [2022-01-19 08:58:36,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:58:36,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 627 transitions. [2022-01-19 08:58:36,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 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 08:58:36,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 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 08:58:36,778 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 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 08:58:36,778 INFO L186 Difference]: Start difference. First operand has 128 places, 123 transitions, 277 flow. Second operand 5 states and 627 transitions. [2022-01-19 08:58:36,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 435 flow [2022-01-19 08:58:36,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 146 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 08:58:36,783 INFO L242 Difference]: Finished difference. Result has 134 places, 127 transitions, 320 flow [2022-01-19 08:58:36,784 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=134, PETRI_TRANSITIONS=127} [2022-01-19 08:58:36,785 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 6 predicate places. [2022-01-19 08:58:36,785 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 127 transitions, 320 flow [2022-01-19 08:58:36,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 08:58:36,786 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:58:36,786 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, 1, 1, 1, 1, 1, 1, 1, 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 08:58:36,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 08:58:36,786 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 08:58:36,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:58:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash 555380035, now seen corresponding path program 3 times [2022-01-19 08:58:36,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:58:36,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833596521] [2022-01-19 08:58:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:58:36,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:58:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:58:36,891 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 08:58:36,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:58:36,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833596521] [2022-01-19 08:58:36,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833596521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 08:58:36,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 08:58:36,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 08:58:36,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817437351] [2022-01-19 08:58:36,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:58:36,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 08:58:36,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:58:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 08:58:36,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 08:58:36,899 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 142 [2022-01-19 08:58:36,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 127 transitions, 320 flow. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 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 08:58:36,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:58:36,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 142 [2022-01-19 08:58:36,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:58:37,043 INFO L129 PetriNetUnfolder]: 211/627 cut-off events. [2022-01-19 08:58:37,043 INFO L130 PetriNetUnfolder]: For 255/262 co-relation queries the response was YES. [2022-01-19 08:58:37,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 627 events. 211/627 cut-off events. For 255/262 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3174 event pairs, 20 based on Foata normal form. 11/557 useless extension candidates. Maximal degree in co-relation 1227. Up to 122 conditions per place. [2022-01-19 08:58:37,047 INFO L132 encePairwiseOnDemand]: 135/142 looper letters, 43 selfloop transitions, 7 changer transitions 12/163 dead transitions. [2022-01-19 08:58:37,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 163 transitions, 571 flow [2022-01-19 08:58:37,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 08:58:37,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 08:58:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 863 transitions. [2022-01-19 08:58:37,049 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8682092555331992 [2022-01-19 08:58:37,049 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 863 transitions. [2022-01-19 08:58:37,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 863 transitions. [2022-01-19 08:58:37,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:58:37,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 863 transitions. [2022-01-19 08:58:37,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.28571428571429) internal successors, (863), 7 states have internal predecessors, (863), 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 08:58:37,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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 08:58:37,052 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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 08:58:37,052 INFO L186 Difference]: Start difference. First operand has 134 places, 127 transitions, 320 flow. Second operand 7 states and 863 transitions. [2022-01-19 08:58:37,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 163 transitions, 571 flow [2022-01-19 08:58:37,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 163 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 08:58:37,057 INFO L242 Difference]: Finished difference. Result has 141 places, 125 transitions, 325 flow [2022-01-19 08:58:37,058 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=141, PETRI_TRANSITIONS=125} [2022-01-19 08:58:37,059 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 13 predicate places. [2022-01-19 08:58:37,059 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 125 transitions, 325 flow [2022-01-19 08:58:37,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 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 08:58:37,060 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:58:37,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:37,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 08:58:37,060 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 08:58:37,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:58:37,060 INFO L85 PathProgramCache]: Analyzing trace with hash -949973330, now seen corresponding path program 1 times [2022-01-19 08:58:37,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:58:37,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258344535] [2022-01-19 08:58:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:58:37,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:58:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:58:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 08:58:37,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:58:37,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258344535] [2022-01-19 08:58:37,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258344535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 08:58:37,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 08:58:37,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 08:58:37,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986642064] [2022-01-19 08:58:37,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:58:37,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 08:58:37,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:58:37,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 08:58:37,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 08:58:37,190 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 142 [2022-01-19 08:58:37,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 125 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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 08:58:37,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:58:37,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 142 [2022-01-19 08:58:37,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:58:37,231 INFO L129 PetriNetUnfolder]: 49/301 cut-off events. [2022-01-19 08:58:37,231 INFO L130 PetriNetUnfolder]: For 131/141 co-relation queries the response was YES. [2022-01-19 08:58:37,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 301 events. 49/301 cut-off events. For 131/141 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 918 event pairs, 9 based on Foata normal form. 13/288 useless extension candidates. Maximal degree in co-relation 502. Up to 70 conditions per place. [2022-01-19 08:58:37,234 INFO L132 encePairwiseOnDemand]: 136/142 looper letters, 17 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2022-01-19 08:58:37,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 127 transitions, 363 flow [2022-01-19 08:58:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 08:58:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 08:58:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2022-01-19 08:58:37,237 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8826291079812206 [2022-01-19 08:58:37,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2022-01-19 08:58:37,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2022-01-19 08:58:37,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:58:37,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2022-01-19 08:58:37,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 08:58:37,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 08:58:37,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 08:58:37,239 INFO L186 Difference]: Start difference. First operand has 141 places, 125 transitions, 325 flow. Second operand 3 states and 376 transitions. [2022-01-19 08:58:37,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 127 transitions, 363 flow [2022-01-19 08:58:37,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 127 transitions, 339 flow, removed 1 selfloop flow, removed 11 redundant places. [2022-01-19 08:58:37,249 INFO L242 Difference]: Finished difference. Result has 133 places, 125 transitions, 311 flow [2022-01-19 08:58:37,250 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=133, PETRI_TRANSITIONS=125} [2022-01-19 08:58:37,251 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 5 predicate places. [2022-01-19 08:58:37,251 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 125 transitions, 311 flow [2022-01-19 08:58:37,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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 08:58:37,252 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:58:37,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:37,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 08:58:37,252 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 08:58:37,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:58:37,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2127396576, now seen corresponding path program 1 times [2022-01-19 08:58:37,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:58:37,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896881501] [2022-01-19 08:58:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:58:37,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:58:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:58:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 08:58:37,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:58:37,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896881501] [2022-01-19 08:58:37,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896881501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 08:58:37,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 08:58:37,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 08:58:37,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213208137] [2022-01-19 08:58:37,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:58:37,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 08:58:37,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:58:37,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 08:58:37,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 08:58:37,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 142 [2022-01-19 08:58:37,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 125 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 08:58:37,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:58:37,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 142 [2022-01-19 08:58:37,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:58:37,425 INFO L129 PetriNetUnfolder]: 79/365 cut-off events. [2022-01-19 08:58:37,425 INFO L130 PetriNetUnfolder]: For 87/113 co-relation queries the response was YES. [2022-01-19 08:58:37,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 365 events. 79/365 cut-off events. For 87/113 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1392 event pairs, 9 based on Foata normal form. 16/353 useless extension candidates. Maximal degree in co-relation 651. Up to 114 conditions per place. [2022-01-19 08:58:37,426 INFO L132 encePairwiseOnDemand]: 139/142 looper letters, 19 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2022-01-19 08:58:37,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 369 flow [2022-01-19 08:58:37,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 08:58:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 08:58:37,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2022-01-19 08:58:37,429 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9061032863849765 [2022-01-19 08:58:37,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2022-01-19 08:58:37,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2022-01-19 08:58:37,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:58:37,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2022-01-19 08:58:37,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 08:58:37,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 08:58:37,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 08:58:37,433 INFO L186 Difference]: Start difference. First operand has 133 places, 125 transitions, 311 flow. Second operand 3 states and 386 transitions. [2022-01-19 08:58:37,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 369 flow [2022-01-19 08:58:37,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 130 transitions, 365 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 08:58:37,435 INFO L242 Difference]: Finished difference. Result has 135 places, 125 transitions, 314 flow [2022-01-19 08:58:37,435 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=135, PETRI_TRANSITIONS=125} [2022-01-19 08:58:37,437 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 7 predicate places. [2022-01-19 08:58:37,437 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 125 transitions, 314 flow [2022-01-19 08:58:37,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 08:58:37,437 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:58:37,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:37,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 08:58:37,438 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 08:58:37,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:58:37,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1212210918, now seen corresponding path program 1 times [2022-01-19 08:58:37,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:58:37,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629584729] [2022-01-19 08:58:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:58:37,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:58:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:58:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 08:58:37,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:58:37,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629584729] [2022-01-19 08:58:37,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629584729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 08:58:37,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 08:58:37,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 08:58:37,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493275740] [2022-01-19 08:58:37,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:58:37,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 08:58:37,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:58:37,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 08:58:37,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 08:58:37,584 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-01-19 08:58:37,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 125 transitions, 314 flow. Second operand has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 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 08:58:37,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:58:37,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-01-19 08:58:37,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:58:37,811 INFO L129 PetriNetUnfolder]: 129/574 cut-off events. [2022-01-19 08:58:37,812 INFO L130 PetriNetUnfolder]: For 218/280 co-relation queries the response was YES. [2022-01-19 08:58:37,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 574 events. 129/574 cut-off events. For 218/280 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2783 event pairs, 24 based on Foata normal form. 66/614 useless extension candidates. Maximal degree in co-relation 1139. Up to 143 conditions per place. [2022-01-19 08:58:37,814 INFO L132 encePairwiseOnDemand]: 132/142 looper letters, 39 selfloop transitions, 6 changer transitions 21/157 dead transitions. [2022-01-19 08:58:37,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 157 transitions, 527 flow [2022-01-19 08:58:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 08:58:37,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 08:58:37,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1095 transitions. [2022-01-19 08:58:37,816 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7711267605633803 [2022-01-19 08:58:37,816 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1095 transitions. [2022-01-19 08:58:37,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1095 transitions. [2022-01-19 08:58:37,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:58:37,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1095 transitions. [2022-01-19 08:58:37,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 109.5) internal successors, (1095), 10 states have internal predecessors, (1095), 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 08:58:37,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 08:58:37,820 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 08:58:37,820 INFO L186 Difference]: Start difference. First operand has 135 places, 125 transitions, 314 flow. Second operand 10 states and 1095 transitions. [2022-01-19 08:58:37,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 157 transitions, 527 flow [2022-01-19 08:58:37,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 157 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 08:58:37,823 INFO L242 Difference]: Finished difference. Result has 147 places, 126 transitions, 338 flow [2022-01-19 08:58:37,823 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=147, PETRI_TRANSITIONS=126} [2022-01-19 08:58:37,823 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 19 predicate places. [2022-01-19 08:58:37,823 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 126 transitions, 338 flow [2022-01-19 08:58:37,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 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 08:58:37,824 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:58:37,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:37,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 08:58:37,824 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 08:58:37,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:58:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1473168341, now seen corresponding path program 1 times [2022-01-19 08:58:37,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:58:37,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346741505] [2022-01-19 08:58:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:58:37,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:58:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:58:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 08:58:37,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:58:37,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346741505] [2022-01-19 08:58:37,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346741505] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 08:58:37,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737079981] [2022-01-19 08:58:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:58:37,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 08:58:37,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 08:58:37,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 08:58:37,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 08:58:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:58:38,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-19 08:58:38,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 08:58:38,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 08:58:38,139 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-19 08:58:38,139 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-01-19 08:58:38,188 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-19 08:58:38,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-01-19 08:58:38,663 INFO L353 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-01-19 08:58:38,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 30 [2022-01-19 08:58:38,797 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 08:58:39,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 08:58:39,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 08:58:39,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 08:58:39,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-19 08:58:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 08:58:39,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 08:58:41,056 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 08:58:41,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 79 [2022-01-19 08:58:41,084 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 08:58:41,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3988 treesize of output 3812 [2022-01-19 08:58:41,116 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 08:58:41,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3796 treesize of output 3236 [2022-01-19 08:58:41,142 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 08:58:41,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3220 treesize of output 3092 [2022-01-19 08:58:41,167 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 08:58:41,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3076 treesize of output 2804 [2022-01-19 08:58:41,184 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-19 08:58:41,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 08:58:41,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 08:58:41,400 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-19 08:58:41,402 INFO L158 Benchmark]: Toolchain (without parser) took 6278.59ms. Allocated memory was 377.5MB in the beginning and 461.4MB in the end (delta: 83.9MB). Free memory was 323.9MB in the beginning and 336.4MB in the end (delta: -12.5MB). Peak memory consumption was 74.9MB. Max. memory is 16.0GB. [2022-01-19 08:58:41,403 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 377.5MB. Free memory was 341.1MB in the beginning and 341.0MB in the end (delta: 69.4kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 08:58:41,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.13ms. Allocated memory was 377.5MB in the beginning and 461.4MB in the end (delta: 83.9MB). Free memory was 323.7MB in the beginning and 434.3MB in the end (delta: -110.6MB). Peak memory consumption was 10.9MB. Max. memory is 16.0GB. [2022-01-19 08:58:41,403 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.85ms. Allocated memory is still 461.4MB. Free memory was 434.3MB in the beginning and 432.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 08:58:41,403 INFO L158 Benchmark]: Boogie Preprocessor took 19.95ms. Allocated memory is still 461.4MB. Free memory was 432.1MB in the beginning and 430.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 08:58:41,403 INFO L158 Benchmark]: RCFGBuilder took 344.65ms. Allocated memory is still 461.4MB. Free memory was 430.1MB in the beginning and 409.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2022-01-19 08:58:41,404 INFO L158 Benchmark]: TraceAbstraction took 5682.87ms. Allocated memory is still 461.4MB. Free memory was 408.1MB in the beginning and 336.4MB in the end (delta: 71.6MB). Peak memory consumption was 75.4MB. Max. memory is 16.0GB. [2022-01-19 08:58:41,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 377.5MB. Free memory was 341.1MB in the beginning and 341.0MB in the end (delta: 69.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 200.13ms. Allocated memory was 377.5MB in the beginning and 461.4MB in the end (delta: 83.9MB). Free memory was 323.7MB in the beginning and 434.3MB in the end (delta: -110.6MB). Peak memory consumption was 10.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.85ms. Allocated memory is still 461.4MB. Free memory was 434.3MB in the beginning and 432.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.95ms. Allocated memory is still 461.4MB. Free memory was 432.1MB in the beginning and 430.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 344.65ms. Allocated memory is still 461.4MB. Free memory was 430.1MB in the beginning and 409.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 5682.87ms. Allocated memory is still 461.4MB. Free memory was 408.1MB in the beginning and 336.4MB in the end (delta: 71.6MB). Peak memory consumption was 75.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-19 08:58:41,429 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...