/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/test-easy10.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 09:12:02,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 09:12:02,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 09:12:02,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 09:12:02,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 09:12:02,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 09:12:02,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 09:12:02,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 09:12:02,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 09:12:02,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 09:12:02,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 09:12:02,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 09:12:02,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 09:12:02,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 09:12:02,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 09:12:02,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 09:12:02,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 09:12:02,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 09:12:02,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 09:12:02,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 09:12:02,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 09:12:02,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 09:12:02,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 09:12:02,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 09:12:02,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 09:12:02,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 09:12:02,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 09:12:02,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 09:12:02,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 09:12:02,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 09:12:02,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 09:12:02,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 09:12:02,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 09:12:02,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 09:12:02,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 09:12:02,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 09:12:02,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 09:12:02,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 09:12:02,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 09:12:02,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 09:12:02,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 09:12:02,288 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 09:12:02,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 09:12:02,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 09:12:02,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 09:12:02,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 09:12:02,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 09:12:02,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 09:12:02,312 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 09:12:02,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 09:12:02,312 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 09:12:02,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 09:12:02,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 09:12:02,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 09:12:02,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 09:12:02,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 09:12:02,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 09:12:02,312 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 09:12:02,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 09:12:02,313 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 09:12:02,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 09:12:02,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 09:12:02,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 09:12:02,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 09:12:02,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 09:12:02,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 09:12:02,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 09:12:02,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 09:12:02,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 09:12:02,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 09:12:02,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 09:12:02,314 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 09:12:02,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 09:12:02,314 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 09:12:02,314 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 09:12:02,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 09:12:02,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 09:12:02,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 09:12:02,522 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 09:12:02,527 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 09:12:02,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2022-01-19 09:12:02,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf50c749/987b3b0fcbb6463ca883b193ef9b2e8e/FLAGc71e69fde [2022-01-19 09:12:02,999 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 09:12:02,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2022-01-19 09:12:03,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf50c749/987b3b0fcbb6463ca883b193ef9b2e8e/FLAGc71e69fde [2022-01-19 09:12:03,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf50c749/987b3b0fcbb6463ca883b193ef9b2e8e [2022-01-19 09:12:03,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 09:12:03,375 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 09:12:03,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 09:12:03,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 09:12:03,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 09:12:03,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 09:12:03" (1/1) ... [2022-01-19 09:12:03,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa67656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03, skipping insertion in model container [2022-01-19 09:12:03,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 09:12:03" (1/1) ... [2022-01-19 09:12:03,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 09:12:03,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 09:12:03,558 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/test-easy10.wvr.c[3907,3920] [2022-01-19 09:12:03,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 09:12:03,583 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 09:12:03,604 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/test-easy10.wvr.c[3907,3920] [2022-01-19 09:12:03,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 09:12:03,619 INFO L208 MainTranslator]: Completed translation [2022-01-19 09:12:03,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03 WrapperNode [2022-01-19 09:12:03,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 09:12:03,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 09:12:03,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 09:12:03,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 09:12:03,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03" (1/1) ... [2022-01-19 09:12:03,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03" (1/1) ... [2022-01-19 09:12:03,672 INFO L137 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2022-01-19 09:12:03,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 09:12:03,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 09:12:03,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 09:12:03,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 09:12:03,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03" (1/1) ... [2022-01-19 09:12:03,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03" (1/1) ... [2022-01-19 09:12:03,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03" (1/1) ... [2022-01-19 09:12:03,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03" (1/1) ... [2022-01-19 09:12:03,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03" (1/1) ... [2022-01-19 09:12:03,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03" (1/1) ... [2022-01-19 09:12:03,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03" (1/1) ... [2022-01-19 09:12:03,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 09:12:03,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 09:12:03,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 09:12:03,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 09:12:03,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03" (1/1) ... [2022-01-19 09:12:03,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 09:12:03,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:12:03,728 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 09:12:03,738 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 09:12:03,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 09:12:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 09:12:03,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 09:12:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 09:12:03,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 09:12:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 09:12:03,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 09:12:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-19 09:12:03,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-19 09:12:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 09:12:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 09:12:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 09:12:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 09:12:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 09:12:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 09:12:03,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 09:12:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 09:12:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 09:12:03,762 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 09:12:03,814 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 09:12:03,815 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 09:12:04,049 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 09:12:04,105 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 09:12:04,105 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 09:12:04,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 09:12:04 BoogieIcfgContainer [2022-01-19 09:12:04,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 09:12:04,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 09:12:04,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 09:12:04,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 09:12:04,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 09:12:03" (1/3) ... [2022-01-19 09:12:04,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdc4cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 09:12:04, skipping insertion in model container [2022-01-19 09:12:04,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:12:03" (2/3) ... [2022-01-19 09:12:04,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdc4cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 09:12:04, skipping insertion in model container [2022-01-19 09:12:04,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 09:12:04" (3/3) ... [2022-01-19 09:12:04,125 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2022-01-19 09:12:04,128 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 09:12:04,128 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 09:12:04,128 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 09:12:04,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,159 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,159 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,159 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,159 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,159 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,160 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,160 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,160 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,160 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,160 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,161 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,161 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,164 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,164 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,164 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,164 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,166 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:12:04,169 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-19 09:12:04,199 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 09:12:04,204 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 09:12:04,204 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-19 09:12:04,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2022-01-19 09:12:04,262 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2022-01-19 09:12:04,262 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 09:12:04,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 2/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2022-01-19 09:12:04,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2022-01-19 09:12:04,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2022-01-19 09:12:04,297 INFO L129 PetriNetUnfolder]: 2/120 cut-off events. [2022-01-19 09:12:04,297 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 09:12:04,297 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:12:04,297 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 09:12:04,298 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:12:04,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:12:04,301 INFO L85 PathProgramCache]: Analyzing trace with hash -936094455, now seen corresponding path program 1 times [2022-01-19 09:12:04,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:12:04,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822930058] [2022-01-19 09:12:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:12:04,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:12:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:12:04,797 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 09:12:04,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:12:04,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822930058] [2022-01-19 09:12:04,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822930058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:12:04,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:12:04,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 09:12:04,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186630682] [2022-01-19 09:12:04,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:12:04,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 09:12:04,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:12:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 09:12:04,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 09:12:04,839 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-01-19 09:12:04,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 266 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 09:12:04,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:12:04,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-01-19 09:12:04,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:12:04,961 INFO L129 PetriNetUnfolder]: 58/329 cut-off events. [2022-01-19 09:12:04,963 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-01-19 09:12:04,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 329 events. 58/329 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1238 event pairs, 13 based on Foata normal form. 10/330 useless extension candidates. Maximal degree in co-relation 376. Up to 100 conditions per place. [2022-01-19 09:12:04,972 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 16 selfloop transitions, 2 changer transitions 2/123 dead transitions. [2022-01-19 09:12:04,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 312 flow [2022-01-19 09:12:04,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 09:12:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 09:12:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-01-19 09:12:04,986 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-01-19 09:12:04,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-01-19 09:12:04,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-01-19 09:12:04,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:12:04,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-01-19 09:12:04,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:12:05,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 09:12:05,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 09:12:05,005 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 384 transitions. [2022-01-19 09:12:05,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 312 flow [2022-01-19 09:12:05,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 292 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-01-19 09:12:05,011 INFO L242 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2022-01-19 09:12:05,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2022-01-19 09:12:05,014 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-01-19 09:12:05,014 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2022-01-19 09:12:05,015 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 09:12:05,015 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:12:05,015 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 09:12:05,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 09:12:05,015 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:12:05,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:12:05,016 INFO L85 PathProgramCache]: Analyzing trace with hash 767252375, now seen corresponding path program 2 times [2022-01-19 09:12:05,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:12:05,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588497003] [2022-01-19 09:12:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:12:05,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:12:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:12:06,273 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 09:12:06,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:12:06,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588497003] [2022-01-19 09:12:06,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588497003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:12:06,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:12:06,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 09:12:06,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330029013] [2022-01-19 09:12:06,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:12:06,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 09:12:06,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:12:06,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 09:12:06,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:12:06,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 09:12:06,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:12:06,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:12:06,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 09:12:06,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:12:08,658 INFO L129 PetriNetUnfolder]: 7174/14147 cut-off events. [2022-01-19 09:12:08,658 INFO L130 PetriNetUnfolder]: For 1060/1060 co-relation queries the response was YES. [2022-01-19 09:12:08,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25835 conditions, 14147 events. 7174/14147 cut-off events. For 1060/1060 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 124289 event pairs, 973 based on Foata normal form. 1/14098 useless extension candidates. Maximal degree in co-relation 18193. Up to 3730 conditions per place. [2022-01-19 09:12:08,726 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 202 selfloop transitions, 16 changer transitions 13/300 dead transitions. [2022-01-19 09:12:08,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 300 transitions, 1129 flow [2022-01-19 09:12:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 09:12:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 09:12:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1592 transitions. [2022-01-19 09:12:08,730 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7210144927536232 [2022-01-19 09:12:08,730 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1592 transitions. [2022-01-19 09:12:08,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1592 transitions. [2022-01-19 09:12:08,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:12:08,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1592 transitions. [2022-01-19 09:12:08,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.5) internal successors, (1592), 16 states have internal predecessors, (1592), 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 09:12:08,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:12:08,737 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:12:08,738 INFO L186 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 16 states and 1592 transitions. [2022-01-19 09:12:08,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 300 transitions, 1129 flow [2022-01-19 09:12:08,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 300 transitions, 1125 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 09:12:08,746 INFO L242 Difference]: Finished difference. Result has 152 places, 130 transitions, 369 flow [2022-01-19 09:12:08,746 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=369, PETRI_PLACES=152, PETRI_TRANSITIONS=130} [2022-01-19 09:12:08,747 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 20 predicate places. [2022-01-19 09:12:08,747 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 130 transitions, 369 flow [2022-01-19 09:12:08,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:12:08,748 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:12:08,748 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 09:12:08,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 09:12:08,748 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:12:08,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:12:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash 924146363, now seen corresponding path program 3 times [2022-01-19 09:12:08,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:12:08,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364683955] [2022-01-19 09:12:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:12:08,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:12:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:12:08,806 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 09:12:08,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:12:08,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364683955] [2022-01-19 09:12:08,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364683955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:12:08,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:12:08,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 09:12:08,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641623633] [2022-01-19 09:12:08,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:12:08,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 09:12:08,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:12:08,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 09:12:08,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 09:12:08,808 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-01-19 09:12:08,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 130 transitions, 369 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 09:12:08,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:12:08,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-01-19 09:12:08,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:12:08,926 INFO L129 PetriNetUnfolder]: 283/1649 cut-off events. [2022-01-19 09:12:08,926 INFO L130 PetriNetUnfolder]: For 382/390 co-relation queries the response was YES. [2022-01-19 09:12:08,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1649 events. 283/1649 cut-off events. For 382/390 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 14043 event pairs, 199 based on Foata normal form. 17/1556 useless extension candidates. Maximal degree in co-relation 2884. Up to 461 conditions per place. [2022-01-19 09:12:08,935 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-01-19 09:12:08,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 134 transitions, 414 flow [2022-01-19 09:12:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 09:12:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 09:12:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-01-19 09:12:08,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-01-19 09:12:08,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-01-19 09:12:08,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-01-19 09:12:08,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:12:08,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-01-19 09:12:08,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 09:12:08,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 09:12:08,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 09:12:08,939 INFO L186 Difference]: Start difference. First operand has 152 places, 130 transitions, 369 flow. Second operand 3 states and 383 transitions. [2022-01-19 09:12:08,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 134 transitions, 414 flow [2022-01-19 09:12:08,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 134 transitions, 401 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-01-19 09:12:08,948 INFO L242 Difference]: Finished difference. Result has 146 places, 129 transitions, 358 flow [2022-01-19 09:12:08,949 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=146, PETRI_TRANSITIONS=129} [2022-01-19 09:12:08,950 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 14 predicate places. [2022-01-19 09:12:08,950 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 129 transitions, 358 flow [2022-01-19 09:12:08,951 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 09:12:08,953 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:12:08,955 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 09:12:08,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 09:12:08,955 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:12:08,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:12:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash 770515071, now seen corresponding path program 4 times [2022-01-19 09:12:08,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:12:08,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735197649] [2022-01-19 09:12:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:12:08,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:12:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:12:09,830 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 09:12:09,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:12:09,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735197649] [2022-01-19 09:12:09,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735197649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:12:09,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:12:09,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 09:12:09,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154541817] [2022-01-19 09:12:09,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:12:09,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 09:12:09,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:12:09,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 09:12:09,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:12:09,833 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 09:12:09,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 129 transitions, 358 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:12:09,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:12:09,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 09:12:09,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:12:13,713 INFO L129 PetriNetUnfolder]: 11554/25502 cut-off events. [2022-01-19 09:12:13,713 INFO L130 PetriNetUnfolder]: For 16969/16969 co-relation queries the response was YES. [2022-01-19 09:12:13,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60082 conditions, 25502 events. 11554/25502 cut-off events. For 16969/16969 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 270963 event pairs, 2799 based on Foata normal form. 1/25279 useless extension candidates. Maximal degree in co-relation 48006. Up to 6826 conditions per place. [2022-01-19 09:12:13,893 INFO L132 encePairwiseOnDemand]: 119/138 looper letters, 233 selfloop transitions, 30 changer transitions 13/345 dead transitions. [2022-01-19 09:12:13,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 345 transitions, 1724 flow [2022-01-19 09:12:13,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 09:12:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 09:12:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1588 transitions. [2022-01-19 09:12:13,896 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7192028985507246 [2022-01-19 09:12:13,896 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1588 transitions. [2022-01-19 09:12:13,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1588 transitions. [2022-01-19 09:12:13,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:12:13,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1588 transitions. [2022-01-19 09:12:13,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.25) internal successors, (1588), 16 states have internal predecessors, (1588), 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 09:12:13,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:12:13,903 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:12:13,903 INFO L186 Difference]: Start difference. First operand has 146 places, 129 transitions, 358 flow. Second operand 16 states and 1588 transitions. [2022-01-19 09:12:13,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 345 transitions, 1724 flow [2022-01-19 09:12:14,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 345 transitions, 1720 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 09:12:14,051 INFO L242 Difference]: Finished difference. Result has 173 places, 153 transitions, 654 flow [2022-01-19 09:12:14,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=654, PETRI_PLACES=173, PETRI_TRANSITIONS=153} [2022-01-19 09:12:14,052 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 41 predicate places. [2022-01-19 09:12:14,052 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 153 transitions, 654 flow [2022-01-19 09:12:14,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:12:14,053 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:12:14,053 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 09:12:14,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 09:12:14,053 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:12:14,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:12:14,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1917193115, now seen corresponding path program 5 times [2022-01-19 09:12:14,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:12:14,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282828255] [2022-01-19 09:12:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:12:14,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:12:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:12:14,144 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 09:12:14,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:12:14,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282828255] [2022-01-19 09:12:14,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282828255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:12:14,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:12:14,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 09:12:14,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268944741] [2022-01-19 09:12:14,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:12:14,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 09:12:14,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:12:14,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 09:12:14,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 09:12:14,147 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-01-19 09:12:14,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 153 transitions, 654 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 09:12:14,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:12:14,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-01-19 09:12:14,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:12:14,552 INFO L129 PetriNetUnfolder]: 799/4372 cut-off events. [2022-01-19 09:12:14,552 INFO L130 PetriNetUnfolder]: For 4154/4255 co-relation queries the response was YES. [2022-01-19 09:12:14,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9688 conditions, 4372 events. 799/4372 cut-off events. For 4154/4255 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 48895 event pairs, 244 based on Foata normal form. 107/4262 useless extension candidates. Maximal degree in co-relation 9507. Up to 1240 conditions per place. [2022-01-19 09:12:14,577 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2022-01-19 09:12:14,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 157 transitions, 704 flow [2022-01-19 09:12:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 09:12:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 09:12:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-01-19 09:12:14,578 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2022-01-19 09:12:14,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-01-19 09:12:14,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-01-19 09:12:14,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:12:14,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-01-19 09:12:14,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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 09:12:14,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 09:12:14,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 09:12:14,580 INFO L186 Difference]: Start difference. First operand has 173 places, 153 transitions, 654 flow. Second operand 3 states and 382 transitions. [2022-01-19 09:12:14,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 157 transitions, 704 flow [2022-01-19 09:12:14,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 157 transitions, 688 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-01-19 09:12:14,602 INFO L242 Difference]: Finished difference. Result has 167 places, 153 transitions, 646 flow [2022-01-19 09:12:14,603 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=167, PETRI_TRANSITIONS=153} [2022-01-19 09:12:14,603 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 35 predicate places. [2022-01-19 09:12:14,603 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 153 transitions, 646 flow [2022-01-19 09:12:14,603 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 09:12:14,603 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:12:14,604 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 09:12:14,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 09:12:14,604 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:12:14,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:12:14,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1090793799, now seen corresponding path program 6 times [2022-01-19 09:12:14,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:12:14,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913635996] [2022-01-19 09:12:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:12:14,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:12:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:12:15,471 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 09:12:15,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:12:15,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913635996] [2022-01-19 09:12:15,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913635996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:12:15,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:12:15,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 09:12:15,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252818201] [2022-01-19 09:12:15,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:12:15,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 09:12:15,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:12:15,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 09:12:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:12:15,474 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 09:12:15,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 153 transitions, 646 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:12:15,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:12:15,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 09:12:15,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:12:20,044 INFO L129 PetriNetUnfolder]: 12674/31422 cut-off events. [2022-01-19 09:12:20,045 INFO L130 PetriNetUnfolder]: For 57738/57738 co-relation queries the response was YES. [2022-01-19 09:12:20,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88458 conditions, 31422 events. 12674/31422 cut-off events. For 57738/57738 co-relation queries the response was YES. Maximal size of possible extension queue 1904. Compared 367661 event pairs, 4382 based on Foata normal form. 1/31183 useless extension candidates. Maximal degree in co-relation 64247. Up to 6339 conditions per place. [2022-01-19 09:12:20,240 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 251 selfloop transitions, 52 changer transitions 13/385 dead transitions. [2022-01-19 09:12:20,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 385 transitions, 2624 flow [2022-01-19 09:12:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 09:12:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 09:12:20,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1574 transitions. [2022-01-19 09:12:20,247 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7128623188405797 [2022-01-19 09:12:20,247 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1574 transitions. [2022-01-19 09:12:20,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1574 transitions. [2022-01-19 09:12:20,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:12:20,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1574 transitions. [2022-01-19 09:12:20,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.375) internal successors, (1574), 16 states have internal predecessors, (1574), 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 09:12:20,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:12:20,258 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:12:20,258 INFO L186 Difference]: Start difference. First operand has 167 places, 153 transitions, 646 flow. Second operand 16 states and 1574 transitions. [2022-01-19 09:12:20,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 385 transitions, 2624 flow [2022-01-19 09:12:20,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 385 transitions, 2620 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 09:12:20,774 INFO L242 Difference]: Finished difference. Result has 195 places, 198 transitions, 1322 flow [2022-01-19 09:12:20,774 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1322, PETRI_PLACES=195, PETRI_TRANSITIONS=198} [2022-01-19 09:12:20,774 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 63 predicate places. [2022-01-19 09:12:20,775 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 198 transitions, 1322 flow [2022-01-19 09:12:20,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:12:20,775 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:12:20,775 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 09:12:20,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 09:12:20,775 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:12:20,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:12:20,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1317266137, now seen corresponding path program 7 times [2022-01-19 09:12:20,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:12:20,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377029915] [2022-01-19 09:12:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:12:20,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:12:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:12:21,496 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 09:12:21,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:12:21,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377029915] [2022-01-19 09:12:21,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377029915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:12:21,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:12:21,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 09:12:21,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910139627] [2022-01-19 09:12:21,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:12:21,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 09:12:21,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:12:21,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 09:12:21,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:12:21,501 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 09:12:21,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 198 transitions, 1322 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:12:21,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:12:21,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 09:12:21,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:12:29,922 INFO L129 PetriNetUnfolder]: 22659/59467 cut-off events. [2022-01-19 09:12:29,922 INFO L130 PetriNetUnfolder]: For 220057/220079 co-relation queries the response was YES. [2022-01-19 09:12:30,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193145 conditions, 59467 events. 22659/59467 cut-off events. For 220057/220079 co-relation queries the response was YES. Maximal size of possible extension queue 3796. Compared 795204 event pairs, 7423 based on Foata normal form. 5/58566 useless extension candidates. Maximal degree in co-relation 191830. Up to 11532 conditions per place. [2022-01-19 09:12:30,513 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 379 selfloop transitions, 60 changer transitions 8/516 dead transitions. [2022-01-19 09:12:30,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 516 transitions, 4816 flow [2022-01-19 09:12:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 09:12:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 09:12:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1599 transitions. [2022-01-19 09:12:30,517 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7241847826086957 [2022-01-19 09:12:30,517 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1599 transitions. [2022-01-19 09:12:30,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1599 transitions. [2022-01-19 09:12:30,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:12:30,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1599 transitions. [2022-01-19 09:12:30,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.9375) internal successors, (1599), 16 states have internal predecessors, (1599), 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 09:12:30,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:12:30,523 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:12:30,523 INFO L186 Difference]: Start difference. First operand has 195 places, 198 transitions, 1322 flow. Second operand 16 states and 1599 transitions. [2022-01-19 09:12:30,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 516 transitions, 4816 flow [2022-01-19 09:12:34,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 516 transitions, 4708 flow, removed 54 selfloop flow, removed 4 redundant places. [2022-01-19 09:12:34,251 INFO L242 Difference]: Finished difference. Result has 216 places, 240 transitions, 2097 flow [2022-01-19 09:12:34,251 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2097, PETRI_PLACES=216, PETRI_TRANSITIONS=240} [2022-01-19 09:12:34,252 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 84 predicate places. [2022-01-19 09:12:34,252 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 240 transitions, 2097 flow [2022-01-19 09:12:34,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:12:34,252 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:12:34,252 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 09:12:34,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 09:12:34,253 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:12:34,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:12:34,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1815647873, now seen corresponding path program 8 times [2022-01-19 09:12:34,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:12:34,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794729389] [2022-01-19 09:12:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:12:34,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:12:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:12:34,305 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 09:12:34,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:12:34,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794729389] [2022-01-19 09:12:34,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794729389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:12:34,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:12:34,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 09:12:34,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355671193] [2022-01-19 09:12:34,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:12:34,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 09:12:34,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:12:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 09:12:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 09:12:34,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-01-19 09:12:34,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 240 transitions, 2097 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 09:12:34,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:12:34,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-01-19 09:12:34,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:12:36,248 INFO L129 PetriNetUnfolder]: 2447/16994 cut-off events. [2022-01-19 09:12:36,249 INFO L130 PetriNetUnfolder]: For 58216/59990 co-relation queries the response was YES. [2022-01-19 09:12:36,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46613 conditions, 16994 events. 2447/16994 cut-off events. For 58216/59990 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 256301 event pairs, 735 based on Foata normal form. 408/16665 useless extension candidates. Maximal degree in co-relation 45542. Up to 4358 conditions per place. [2022-01-19 09:12:36,353 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/233 dead transitions. [2022-01-19 09:12:36,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 233 transitions, 1996 flow [2022-01-19 09:12:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 09:12:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 09:12:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-01-19 09:12:36,354 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-01-19 09:12:36,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-01-19 09:12:36,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-01-19 09:12:36,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:12:36,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-01-19 09:12:36,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 09:12:36,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 09:12:36,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 09:12:36,356 INFO L186 Difference]: Start difference. First operand has 216 places, 240 transitions, 2097 flow. Second operand 3 states and 383 transitions. [2022-01-19 09:12:36,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 233 transitions, 1996 flow [2022-01-19 09:12:37,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 233 transitions, 1875 flow, removed 51 selfloop flow, removed 6 redundant places. [2022-01-19 09:12:37,282 INFO L242 Difference]: Finished difference. Result has 210 places, 228 transitions, 1828 flow [2022-01-19 09:12:37,282 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1828, PETRI_PLACES=210, PETRI_TRANSITIONS=228} [2022-01-19 09:12:37,284 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 78 predicate places. [2022-01-19 09:12:37,284 INFO L470 AbstractCegarLoop]: Abstraction has has 210 places, 228 transitions, 1828 flow [2022-01-19 09:12:37,285 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 09:12:37,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:12:37,285 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 09:12:37,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 09:12:37,285 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:12:37,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:12:37,285 INFO L85 PathProgramCache]: Analyzing trace with hash -451167609, now seen corresponding path program 9 times [2022-01-19 09:12:37,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:12:37,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446367050] [2022-01-19 09:12:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:12:37,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:12:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:12:37,992 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 09:12:37,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:12:37,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446367050] [2022-01-19 09:12:37,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446367050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:12:37,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:12:37,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 09:12:37,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794885977] [2022-01-19 09:12:37,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:12:37,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 09:12:37,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:12:37,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 09:12:37,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:12:37,995 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 09:12:37,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 228 transitions, 1828 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:12:37,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:12:37,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 09:12:37,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:12:48,772 INFO L129 PetriNetUnfolder]: 25946/71278 cut-off events. [2022-01-19 09:12:48,772 INFO L130 PetriNetUnfolder]: For 329115/329115 co-relation queries the response was YES. [2022-01-19 09:12:49,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247096 conditions, 71278 events. 25946/71278 cut-off events. For 329115/329115 co-relation queries the response was YES. Maximal size of possible extension queue 4924. Compared 1002546 event pairs, 8578 based on Foata normal form. 1/70461 useless extension candidates. Maximal degree in co-relation 228804. Up to 14224 conditions per place. [2022-01-19 09:12:49,671 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 332 selfloop transitions, 93 changer transitions 12/506 dead transitions. [2022-01-19 09:12:49,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 506 transitions, 5319 flow [2022-01-19 09:12:49,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 09:12:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 09:12:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1562 transitions. [2022-01-19 09:12:49,681 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.707427536231884 [2022-01-19 09:12:49,681 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1562 transitions. [2022-01-19 09:12:49,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1562 transitions. [2022-01-19 09:12:49,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:12:49,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1562 transitions. [2022-01-19 09:12:49,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.625) internal successors, (1562), 16 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 09:12:49,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:12:49,687 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:12:49,687 INFO L186 Difference]: Start difference. First operand has 210 places, 228 transitions, 1828 flow. Second operand 16 states and 1562 transitions. [2022-01-19 09:12:49,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 506 transitions, 5319 flow [2022-01-19 09:12:53,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 506 transitions, 5315 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 09:12:53,784 INFO L242 Difference]: Finished difference. Result has 237 places, 284 transitions, 3029 flow [2022-01-19 09:12:53,784 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3029, PETRI_PLACES=237, PETRI_TRANSITIONS=284} [2022-01-19 09:12:53,785 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 105 predicate places. [2022-01-19 09:12:53,785 INFO L470 AbstractCegarLoop]: Abstraction has has 237 places, 284 transitions, 3029 flow [2022-01-19 09:12:53,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:12:53,785 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:12:53,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 09:12:53,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 09:12:53,786 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:12:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:12:53,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1989242891, now seen corresponding path program 10 times [2022-01-19 09:12:53,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:12:53,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159569207] [2022-01-19 09:12:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:12:53,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:12:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:12:54,399 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 09:12:54,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:12:54,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159569207] [2022-01-19 09:12:54,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159569207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:12:54,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:12:54,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 09:12:54,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106400974] [2022-01-19 09:12:54,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:12:54,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 09:12:54,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:12:54,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 09:12:54,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:12:54,402 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 09:12:54,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 284 transitions, 3029 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:12:54,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:12:54,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 09:12:54,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:13:08,774 INFO L129 PetriNetUnfolder]: 31716/88529 cut-off events. [2022-01-19 09:13:08,774 INFO L130 PetriNetUnfolder]: For 614657/614657 co-relation queries the response was YES. [2022-01-19 09:13:09,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 341481 conditions, 88529 events. 31716/88529 cut-off events. For 614657/614657 co-relation queries the response was YES. Maximal size of possible extension queue 6168. Compared 1290569 event pairs, 10925 based on Foata normal form. 1/87313 useless extension candidates. Maximal degree in co-relation 339139. Up to 16975 conditions per place. [2022-01-19 09:13:10,163 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 421 selfloop transitions, 118 changer transitions 8/616 dead transitions. [2022-01-19 09:13:10,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 616 transitions, 7953 flow [2022-01-19 09:13:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 09:13:10,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 09:13:10,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1584 transitions. [2022-01-19 09:13:10,166 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2022-01-19 09:13:10,166 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1584 transitions. [2022-01-19 09:13:10,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1584 transitions. [2022-01-19 09:13:10,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:13:10,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1584 transitions. [2022-01-19 09:13:10,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 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 09:13:10,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:13:10,171 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:13:10,172 INFO L186 Difference]: Start difference. First operand has 237 places, 284 transitions, 3029 flow. Second operand 16 states and 1584 transitions. [2022-01-19 09:13:10,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 616 transitions, 7953 flow [2022-01-19 09:13:20,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 616 transitions, 7743 flow, removed 101 selfloop flow, removed 5 redundant places. [2022-01-19 09:13:20,634 INFO L242 Difference]: Finished difference. Result has 257 places, 334 transitions, 4295 flow [2022-01-19 09:13:20,635 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4295, PETRI_PLACES=257, PETRI_TRANSITIONS=334} [2022-01-19 09:13:20,637 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 125 predicate places. [2022-01-19 09:13:20,637 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 334 transitions, 4295 flow [2022-01-19 09:13:20,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:13:20,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:13:20,637 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 09:13:20,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 09:13:20,638 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:13:20,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:13:20,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1490072689, now seen corresponding path program 11 times [2022-01-19 09:13:20,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:13:20,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096598227] [2022-01-19 09:13:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:13:20,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:13:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:13:21,662 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 09:13:21,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:13:21,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096598227] [2022-01-19 09:13:21,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096598227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:13:21,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:13:21,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 09:13:21,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741984828] [2022-01-19 09:13:21,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:13:21,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 09:13:21,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:13:21,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 09:13:21,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:13:21,665 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 09:13:21,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 334 transitions, 4295 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:13:21,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:13:21,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 09:13:21,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:13:36,023 INFO L129 PetriNetUnfolder]: 33829/94253 cut-off events. [2022-01-19 09:13:36,023 INFO L130 PetriNetUnfolder]: For 828194/828226 co-relation queries the response was YES. [2022-01-19 09:13:37,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 391980 conditions, 94253 events. 33829/94253 cut-off events. For 828194/828226 co-relation queries the response was YES. Maximal size of possible extension queue 6808. Compared 1393250 event pairs, 12086 based on Foata normal form. 7/92847 useless extension candidates. Maximal degree in co-relation 389328. Up to 24023 conditions per place. [2022-01-19 09:13:38,114 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 463 selfloop transitions, 119 changer transitions 9/660 dead transitions. [2022-01-19 09:13:38,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 660 transitions, 9593 flow [2022-01-19 09:13:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 09:13:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 09:13:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1590 transitions. [2022-01-19 09:13:38,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.720108695652174 [2022-01-19 09:13:38,117 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1590 transitions. [2022-01-19 09:13:38,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1590 transitions. [2022-01-19 09:13:38,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:13:38,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1590 transitions. [2022-01-19 09:13:38,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.375) internal successors, (1590), 16 states have internal predecessors, (1590), 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 09:13:38,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:13:38,121 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:13:38,122 INFO L186 Difference]: Start difference. First operand has 257 places, 334 transitions, 4295 flow. Second operand 16 states and 1590 transitions. [2022-01-19 09:13:38,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 660 transitions, 9593 flow [2022-01-19 09:13:51,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 660 transitions, 9330 flow, removed 128 selfloop flow, removed 4 redundant places. [2022-01-19 09:13:51,505 INFO L242 Difference]: Finished difference. Result has 278 places, 363 transitions, 5182 flow [2022-01-19 09:13:51,505 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=4160, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5182, PETRI_PLACES=278, PETRI_TRANSITIONS=363} [2022-01-19 09:13:51,506 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 146 predicate places. [2022-01-19 09:13:51,506 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 363 transitions, 5182 flow [2022-01-19 09:13:51,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:13:51,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:13:51,507 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:51,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 09:13:51,507 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:13:51,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:13:51,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1719168271, now seen corresponding path program 12 times [2022-01-19 09:13:51,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:13:51,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496278715] [2022-01-19 09:13:51,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:13:51,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:13:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:13:52,088 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 09:13:52,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:13:52,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496278715] [2022-01-19 09:13:52,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496278715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:13:52,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:13:52,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 09:13:52,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949454455] [2022-01-19 09:13:52,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:13:52,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 09:13:52,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:13:52,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 09:13:52,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:13:52,090 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 09:13:52,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 363 transitions, 5182 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:13:52,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:13:52,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 09:13:52,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:14:11,598 INFO L129 PetriNetUnfolder]: 34968/100083 cut-off events. [2022-01-19 09:14:11,599 INFO L130 PetriNetUnfolder]: For 1088206/1088206 co-relation queries the response was YES. [2022-01-19 09:14:13,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 440156 conditions, 100083 events. 34968/100083 cut-off events. For 1088206/1088206 co-relation queries the response was YES. Maximal size of possible extension queue 7318. Compared 1510872 event pairs, 12000 based on Foata normal form. 1/98563 useless extension candidates. Maximal degree in co-relation 437099. Up to 20493 conditions per place. [2022-01-19 09:14:13,608 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 457 selfloop transitions, 158 changer transitions 9/693 dead transitions. [2022-01-19 09:14:13,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 693 transitions, 11100 flow [2022-01-19 09:14:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 09:14:13,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 09:14:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1576 transitions. [2022-01-19 09:14:13,610 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7137681159420289 [2022-01-19 09:14:13,610 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1576 transitions. [2022-01-19 09:14:13,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1576 transitions. [2022-01-19 09:14:13,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:14:13,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1576 transitions. [2022-01-19 09:14:13,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.5) internal successors, (1576), 16 states have internal predecessors, (1576), 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 09:14:13,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:14:13,616 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:14:13,617 INFO L186 Difference]: Start difference. First operand has 278 places, 363 transitions, 5182 flow. Second operand 16 states and 1576 transitions. [2022-01-19 09:14:13,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 693 transitions, 11100 flow [2022-01-19 09:14:25,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 693 transitions, 10842 flow, removed 112 selfloop flow, removed 5 redundant places. [2022-01-19 09:14:25,385 INFO L242 Difference]: Finished difference. Result has 296 places, 419 transitions, 6737 flow [2022-01-19 09:14:25,385 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=5016, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6737, PETRI_PLACES=296, PETRI_TRANSITIONS=419} [2022-01-19 09:14:25,386 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 164 predicate places. [2022-01-19 09:14:25,386 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 419 transitions, 6737 flow [2022-01-19 09:14:25,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:14:25,386 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:14:25,386 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 09:14:25,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 09:14:25,386 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:14:25,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:14:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1388784379, now seen corresponding path program 13 times [2022-01-19 09:14:25,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:14:25,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154755888] [2022-01-19 09:14:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:14:25,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:14:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:14:25,947 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 09:14:25,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:14:25,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154755888] [2022-01-19 09:14:25,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154755888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:14:25,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:14:25,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 09:14:25,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308540483] [2022-01-19 09:14:25,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:14:25,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 09:14:25,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:14:25,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 09:14:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:14:25,949 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 09:14:25,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 419 transitions, 6737 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:14:25,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:14:25,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 09:14:25,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:14:52,737 INFO L129 PetriNetUnfolder]: 39721/131403 cut-off events. [2022-01-19 09:14:52,738 INFO L130 PetriNetUnfolder]: For 1637257/1637257 co-relation queries the response was YES. [2022-01-19 09:14:54,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 576162 conditions, 131403 events. 39721/131403 cut-off events. For 1637257/1637257 co-relation queries the response was YES. Maximal size of possible extension queue 9978. Compared 2192206 event pairs, 14676 based on Foata normal form. 1/129664 useless extension candidates. Maximal degree in co-relation 570372. Up to 25749 conditions per place. [2022-01-19 09:14:55,333 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 853 selfloop transitions, 179 changer transitions 8/1109 dead transitions. [2022-01-19 09:14:55,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 1109 transitions, 21779 flow [2022-01-19 09:14:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 09:14:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 09:14:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1573 transitions. [2022-01-19 09:14:55,349 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7124094202898551 [2022-01-19 09:14:55,349 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1573 transitions. [2022-01-19 09:14:55,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1573 transitions. [2022-01-19 09:14:55,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:14:55,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1573 transitions. [2022-01-19 09:14:55,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.3125) internal successors, (1573), 16 states have internal predecessors, (1573), 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 09:14:55,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:14:55,368 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 09:14:55,368 INFO L186 Difference]: Start difference. First operand has 296 places, 419 transitions, 6737 flow. Second operand 16 states and 1573 transitions. [2022-01-19 09:14:55,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 1109 transitions, 21779 flow [2022-01-19 09:15:17,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 1109 transitions, 21316 flow, removed 181 selfloop flow, removed 5 redundant places. [2022-01-19 09:15:17,054 INFO L242 Difference]: Finished difference. Result has 317 places, 543 transitions, 9827 flow [2022-01-19 09:15:17,055 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=6553, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9827, PETRI_PLACES=317, PETRI_TRANSITIONS=543} [2022-01-19 09:15:17,055 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 185 predicate places. [2022-01-19 09:15:17,055 INFO L470 AbstractCegarLoop]: Abstraction has has 317 places, 543 transitions, 9827 flow [2022-01-19 09:15:17,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:15:17,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:15:17,055 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 09:15:17,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 09:15:17,056 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 09:15:17,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:15:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1473821179, now seen corresponding path program 14 times [2022-01-19 09:15:17,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:15:17,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730823608] [2022-01-19 09:15:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:15:17,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:15:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:15:17,600 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 09:15:17,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:15:17,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730823608] [2022-01-19 09:15:17,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730823608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:15:17,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:15:17,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 09:15:17,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734710191] [2022-01-19 09:15:17,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:15:17,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 09:15:17,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:15:17,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 09:15:17,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:15:17,602 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 09:15:17,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 543 transitions, 9827 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 09:15:17,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:15:17,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 09:15:17,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand