/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 10:01:38,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 10:01:38,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 10:01:39,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 10:01:39,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 10:01:39,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 10:01:39,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 10:01:39,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 10:01:39,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 10:01:39,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 10:01:39,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 10:01:39,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 10:01:39,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 10:01:39,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 10:01:39,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 10:01:39,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 10:01:39,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 10:01:39,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 10:01:39,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 10:01:39,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 10:01:39,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 10:01:39,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 10:01:39,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 10:01:39,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 10:01:39,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 10:01:39,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 10:01:39,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 10:01:39,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 10:01:39,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 10:01:39,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 10:01:39,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 10:01:39,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 10:01:39,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 10:01:39,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 10:01:39,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 10:01:39,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 10:01:39,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 10:01:39,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 10:01:39,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 10:01:39,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 10:01:39,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 10:01:39,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 10:01:39,133 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 10:01:39,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 10:01:39,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 10:01:39,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 10:01:39,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 10:01:39,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 10:01:39,135 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 10:01:39,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 10:01:39,135 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 10:01:39,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 10:01:39,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 10:01:39,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 10:01:39,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 10:01:39,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 10:01:39,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 10:01:39,136 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 10:01:39,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 10:01:39,136 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 10:01:39,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 10:01:39,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 10:01:39,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 10:01:39,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 10:01:39,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 10:01:39,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:01:39,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 10:01:39,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 10:01:39,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 10:01:39,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 10:01:39,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 10:01:39,137 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 10:01:39,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 10:01:39,137 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 10:01:39,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 10:01:39,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 10:01:39,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 10:01:39,346 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 10:01:39,347 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 10:01:39,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-01-28 10:01:40,433 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 10:01:40,613 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 10:01:40,614 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-01-28 10:01:40,620 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cbb705fc/c5ff7f93ab084bbf9393e88021ac881c/FLAG702ce5736 [2023-01-28 10:01:40,632 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cbb705fc/c5ff7f93ab084bbf9393e88021ac881c [2023-01-28 10:01:40,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 10:01:40,635 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 10:01:40,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 10:01:40,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 10:01:40,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 10:01:40,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@561cfc65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40, skipping insertion in model container [2023-01-28 10:01:40,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 10:01:40,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 10:01:40,835 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2023-01-28 10:01:40,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:01:40,851 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 10:01:40,874 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2023-01-28 10:01:40,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:01:40,882 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:01:40,883 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:01:40,893 INFO L208 MainTranslator]: Completed translation [2023-01-28 10:01:40,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40 WrapperNode [2023-01-28 10:01:40,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 10:01:40,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 10:01:40,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 10:01:40,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 10:01:40,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,928 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 478 [2023-01-28 10:01:40,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 10:01:40,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 10:01:40,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 10:01:40,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 10:01:40,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,953 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 10:01:40,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 10:01:40,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 10:01:40,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 10:01:40,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40" (1/1) ... [2023-01-28 10:01:40,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:01:40,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:01:41,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 10:01:41,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 10:01:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 10:01:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 10:01:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 10:01:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 10:01:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 10:01:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 10:01:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 10:01:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 10:01:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 10:01:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 10:01:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 10:01:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 10:01:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 10:01:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 10:01:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 10:01:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 10:01:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 10:01:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 10:01:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 10:01:41,034 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 10:01:41,142 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 10:01:41,143 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 10:01:41,664 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 10:01:41,860 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 10:01:41,860 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-01-28 10:01:41,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:01:41 BoogieIcfgContainer [2023-01-28 10:01:41,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 10:01:41,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 10:01:41,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 10:01:41,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 10:01:41,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:01:40" (1/3) ... [2023-01-28 10:01:41,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61888c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:01:41, skipping insertion in model container [2023-01-28 10:01:41,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:01:40" (2/3) ... [2023-01-28 10:01:41,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61888c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:01:41, skipping insertion in model container [2023-01-28 10:01:41,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:01:41" (3/3) ... [2023-01-28 10:01:41,870 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2023-01-28 10:01:41,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 10:01:41,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 10:01:41,882 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 10:01:41,959 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 10:01:41,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 349 transitions, 730 flow [2023-01-28 10:01:42,076 INFO L130 PetriNetUnfolder]: 37/345 cut-off events. [2023-01-28 10:01:42,076 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 10:01:42,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 345 events. 37/345 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 257 event pairs, 0 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 302. Up to 8 conditions per place. [2023-01-28 10:01:42,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 349 transitions, 730 flow [2023-01-28 10:01:42,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 333 transitions, 690 flow [2023-01-28 10:01:42,091 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 10:01:42,108 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 333 transitions, 690 flow [2023-01-28 10:01:42,110 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 333 transitions, 690 flow [2023-01-28 10:01:42,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 333 transitions, 690 flow [2023-01-28 10:01:42,170 INFO L130 PetriNetUnfolder]: 37/333 cut-off events. [2023-01-28 10:01:42,170 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 10:01:42,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 333 events. 37/333 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 255 event pairs, 0 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 302. Up to 8 conditions per place. [2023-01-28 10:01:42,176 INFO L119 LiptonReduction]: Number of co-enabled transitions 5712 [2023-01-28 10:01:52,916 INFO L134 LiptonReduction]: Checked pairs total: 5673 [2023-01-28 10:01:52,917 INFO L136 LiptonReduction]: Total number of compositions: 366 [2023-01-28 10:01:52,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 10:01:52,931 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7010599d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 10:01:52,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 10:01:52,936 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2023-01-28 10:01:52,936 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 10:01:52,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:52,937 INFO L208 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] [2023-01-28 10:01:52,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:01:52,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1306017517, now seen corresponding path program 1 times [2023-01-28 10:01:52,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:52,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206236515] [2023-01-28 10:01:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:52,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:53,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:53,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206236515] [2023-01-28 10:01:53,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206236515] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:53,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:53,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 10:01:53,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537521042] [2023-01-28 10:01:53,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:53,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:01:53,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:53,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:01:53,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:01:53,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 715 [2023-01-28 10:01:53,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:53,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:53,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 715 [2023-01-28 10:01:53,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:53,834 INFO L130 PetriNetUnfolder]: 501/685 cut-off events. [2023-01-28 10:01:53,835 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-01-28 10:01:53,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1464 conditions, 685 events. 501/685 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1781 event pairs, 117 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1016. Up to 471 conditions per place. [2023-01-28 10:01:53,840 INFO L137 encePairwiseOnDemand]: 709/715 looper letters, 49 selfloop transitions, 5 changer transitions 1/55 dead transitions. [2023-01-28 10:01:53,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 265 flow [2023-01-28 10:01:53,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:01:53,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:01:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2023-01-28 10:01:53,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568764568764569 [2023-01-28 10:01:53,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2023-01-28 10:01:53,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2023-01-28 10:01:53,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:53,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2023-01-28 10:01:53,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:53,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:53,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:53,893 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 90 flow. Second operand 3 states and 980 transitions. [2023-01-28 10:01:53,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 265 flow [2023-01-28 10:01:53,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 55 transitions, 235 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 10:01:53,900 INFO L231 Difference]: Finished difference. Result has 33 places, 37 transitions, 107 flow [2023-01-28 10:01:53,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=33, PETRI_TRANSITIONS=37} [2023-01-28 10:01:53,908 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-01-28 10:01:53,908 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 37 transitions, 107 flow [2023-01-28 10:01:53,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:53,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:53,909 INFO L208 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] [2023-01-28 10:01:53,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 10:01:53,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:01:53,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:53,910 INFO L85 PathProgramCache]: Analyzing trace with hash -77633324, now seen corresponding path program 1 times [2023-01-28 10:01:53,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:53,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586817495] [2023-01-28 10:01:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:53,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:54,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586817495] [2023-01-28 10:01:54,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586817495] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:54,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:54,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 10:01:54,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633992364] [2023-01-28 10:01:54,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:54,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:01:54,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:54,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:01:54,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:01:54,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 715 [2023-01-28 10:01:54,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 37 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 308.5) internal successors, (1234), 4 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:54,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:54,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 715 [2023-01-28 10:01:54,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:54,731 INFO L130 PetriNetUnfolder]: 901/1249 cut-off events. [2023-01-28 10:01:54,731 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2023-01-28 10:01:54,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3095 conditions, 1249 events. 901/1249 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3979 event pairs, 267 based on Foata normal form. 72/1317 useless extension candidates. Maximal degree in co-relation 667. Up to 547 conditions per place. [2023-01-28 10:01:54,738 INFO L137 encePairwiseOnDemand]: 712/715 looper letters, 73 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-01-28 10:01:54,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 77 transitions, 368 flow [2023-01-28 10:01:54,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 10:01:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 10:01:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1283 transitions. [2023-01-28 10:01:54,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486013986013986 [2023-01-28 10:01:54,742 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1283 transitions. [2023-01-28 10:01:54,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1283 transitions. [2023-01-28 10:01:54,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:54,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1283 transitions. [2023-01-28 10:01:54,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 320.75) internal successors, (1283), 4 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:54,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:54,752 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:54,753 INFO L175 Difference]: Start difference. First operand has 33 places, 37 transitions, 107 flow. Second operand 4 states and 1283 transitions. [2023-01-28 10:01:54,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 77 transitions, 368 flow [2023-01-28 10:01:54,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 77 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:01:54,756 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 126 flow [2023-01-28 10:01:54,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2023-01-28 10:01:54,757 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places. [2023-01-28 10:01:54,757 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 126 flow [2023-01-28 10:01:54,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 308.5) internal successors, (1234), 4 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:54,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:54,758 INFO L208 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] [2023-01-28 10:01:54,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 10:01:54,758 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:01:54,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash 813085905, now seen corresponding path program 1 times [2023-01-28 10:01:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:54,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667073216] [2023-01-28 10:01:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:54,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:55,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:55,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667073216] [2023-01-28 10:01:55,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667073216] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:55,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:55,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 10:01:55,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947583513] [2023-01-28 10:01:55,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:55,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:01:55,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:01:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:01:55,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 715 [2023-01-28 10:01:55,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:55,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:55,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 715 [2023-01-28 10:01:55,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:55,345 INFO L130 PetriNetUnfolder]: 867/1211 cut-off events. [2023-01-28 10:01:55,345 INFO L131 PetriNetUnfolder]: For 739/739 co-relation queries the response was YES. [2023-01-28 10:01:55,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 1211 events. 867/1211 cut-off events. For 739/739 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3904 event pairs, 233 based on Foata normal form. 30/1237 useless extension candidates. Maximal degree in co-relation 1256. Up to 997 conditions per place. [2023-01-28 10:01:55,350 INFO L137 encePairwiseOnDemand]: 711/715 looper letters, 49 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2023-01-28 10:01:55,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 262 flow [2023-01-28 10:01:55,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:01:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:01:55,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 934 transitions. [2023-01-28 10:01:55,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354312354312354 [2023-01-28 10:01:55,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 934 transitions. [2023-01-28 10:01:55,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 934 transitions. [2023-01-28 10:01:55,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:55,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 934 transitions. [2023-01-28 10:01:55,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:55,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:55,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:55,358 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 126 flow. Second operand 3 states and 934 transitions. [2023-01-28 10:01:55,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 262 flow [2023-01-28 10:01:55,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 53 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:01:55,361 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 122 flow [2023-01-28 10:01:55,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-01-28 10:01:55,362 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-01-28 10:01:55,364 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 122 flow [2023-01-28 10:01:55,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:55,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:55,365 INFO L208 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] [2023-01-28 10:01:55,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 10:01:55,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:01:55,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:55,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1128617926, now seen corresponding path program 1 times [2023-01-28 10:01:55,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:55,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109850765] [2023-01-28 10:01:55,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:55,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:55,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:55,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109850765] [2023-01-28 10:01:55,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109850765] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:55,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:55,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 10:01:55,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966455099] [2023-01-28 10:01:55,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:55,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:01:55,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:55,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:01:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 10:01:55,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 715 [2023-01-28 10:01:55,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:55,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:55,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 715 [2023-01-28 10:01:55,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:56,202 INFO L130 PetriNetUnfolder]: 2142/3045 cut-off events. [2023-01-28 10:01:56,202 INFO L131 PetriNetUnfolder]: For 1987/1987 co-relation queries the response was YES. [2023-01-28 10:01:56,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7779 conditions, 3045 events. 2142/3045 cut-off events. For 1987/1987 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11823 event pairs, 1089 based on Foata normal form. 120/3154 useless extension candidates. Maximal degree in co-relation 3203. Up to 1308 conditions per place. [2023-01-28 10:01:56,214 INFO L137 encePairwiseOnDemand]: 705/715 looper letters, 120 selfloop transitions, 13 changer transitions 0/133 dead transitions. [2023-01-28 10:01:56,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 133 transitions, 672 flow [2023-01-28 10:01:56,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 10:01:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 10:01:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1912 transitions. [2023-01-28 10:01:56,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38201798201798204 [2023-01-28 10:01:56,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1912 transitions. [2023-01-28 10:01:56,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1912 transitions. [2023-01-28 10:01:56,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:56,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1912 transitions. [2023-01-28 10:01:56,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.14285714285717) internal successors, (1912), 7 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:56,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 715.0) internal successors, (5720), 8 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:56,234 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 715.0) internal successors, (5720), 8 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:56,234 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 122 flow. Second operand 7 states and 1912 transitions. [2023-01-28 10:01:56,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 133 transitions, 672 flow [2023-01-28 10:01:56,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 133 transitions, 662 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 10:01:56,238 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 222 flow [2023-01-28 10:01:56,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=222, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2023-01-28 10:01:56,238 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2023-01-28 10:01:56,239 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 222 flow [2023-01-28 10:01:56,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:56,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:56,239 INFO L208 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] [2023-01-28 10:01:56,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 10:01:56,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:01:56,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:56,240 INFO L85 PathProgramCache]: Analyzing trace with hash 92803885, now seen corresponding path program 1 times [2023-01-28 10:01:56,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:56,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369577559] [2023-01-28 10:01:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:56,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:56,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:56,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369577559] [2023-01-28 10:01:56,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369577559] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:56,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:56,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 10:01:56,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927564101] [2023-01-28 10:01:56,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:56,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:01:56,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:56,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:01:56,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:01:56,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 715 [2023-01-28 10:01:56,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:56,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:56,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 715 [2023-01-28 10:01:56,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:56,664 INFO L130 PetriNetUnfolder]: 1106/1637 cut-off events. [2023-01-28 10:01:56,664 INFO L131 PetriNetUnfolder]: For 1286/1286 co-relation queries the response was YES. [2023-01-28 10:01:56,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4225 conditions, 1637 events. 1106/1637 cut-off events. For 1286/1286 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5857 event pairs, 785 based on Foata normal form. 60/1696 useless extension candidates. Maximal degree in co-relation 3315. Up to 1212 conditions per place. [2023-01-28 10:01:56,670 INFO L137 encePairwiseOnDemand]: 706/715 looper letters, 36 selfloop transitions, 2 changer transitions 51/89 dead transitions. [2023-01-28 10:01:56,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 89 transitions, 476 flow [2023-01-28 10:01:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:01:56,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:01:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1382 transitions. [2023-01-28 10:01:56,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3865734265734266 [2023-01-28 10:01:56,673 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1382 transitions. [2023-01-28 10:01:56,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1382 transitions. [2023-01-28 10:01:56,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:56,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1382 transitions. [2023-01-28 10:01:56,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 276.4) internal successors, (1382), 5 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:56,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 715.0) internal successors, (4290), 6 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:56,680 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 715.0) internal successors, (4290), 6 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:56,680 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 222 flow. Second operand 5 states and 1382 transitions. [2023-01-28 10:01:56,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 89 transitions, 476 flow [2023-01-28 10:01:56,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 89 transitions, 468 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-28 10:01:56,683 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 148 flow [2023-01-28 10:01:56,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-01-28 10:01:56,683 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-01-28 10:01:56,683 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 148 flow [2023-01-28 10:01:56,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:56,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:56,684 INFO L208 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] [2023-01-28 10:01:56,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 10:01:56,684 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:01:56,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:56,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1880297155, now seen corresponding path program 1 times [2023-01-28 10:01:56,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:56,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465178678] [2023-01-28 10:01:56,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:56,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:56,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:56,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465178678] [2023-01-28 10:01:56,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465178678] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:56,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:56,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 10:01:56,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906585186] [2023-01-28 10:01:56,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:56,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:01:56,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:56,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:01:56,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:01:56,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 715 [2023-01-28 10:01:56,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 305.75) internal successors, (1223), 4 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:56,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:56,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 715 [2023-01-28 10:01:56,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:57,101 INFO L130 PetriNetUnfolder]: 999/1404 cut-off events. [2023-01-28 10:01:57,101 INFO L131 PetriNetUnfolder]: For 1032/1032 co-relation queries the response was YES. [2023-01-28 10:01:57,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 1404 events. 999/1404 cut-off events. For 1032/1032 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4527 event pairs, 269 based on Foata normal form. 60/1463 useless extension candidates. Maximal degree in co-relation 3630. Up to 533 conditions per place. [2023-01-28 10:01:57,107 INFO L137 encePairwiseOnDemand]: 712/715 looper letters, 66 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-01-28 10:01:57,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 374 flow [2023-01-28 10:01:57,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 10:01:57,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 10:01:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1262 transitions. [2023-01-28 10:01:57,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44125874125874126 [2023-01-28 10:01:57,110 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1262 transitions. [2023-01-28 10:01:57,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1262 transitions. [2023-01-28 10:01:57,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:57,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1262 transitions. [2023-01-28 10:01:57,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 315.5) internal successors, (1262), 4 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:57,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:57,115 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:57,115 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 148 flow. Second operand 4 states and 1262 transitions. [2023-01-28 10:01:57,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 374 flow [2023-01-28 10:01:57,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 354 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-01-28 10:01:57,117 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 138 flow [2023-01-28 10:01:57,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-01-28 10:01:57,118 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2023-01-28 10:01:57,118 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 138 flow [2023-01-28 10:01:57,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.75) internal successors, (1223), 4 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:57,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:57,118 INFO L208 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] [2023-01-28 10:01:57,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 10:01:57,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:01:57,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:57,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1880354200, now seen corresponding path program 1 times [2023-01-28 10:01:57,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:57,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153309263] [2023-01-28 10:01:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:57,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:57,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:57,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153309263] [2023-01-28 10:01:57,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153309263] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:01:57,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024731408] [2023-01-28 10:01:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:57,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:57,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:01:57,272 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:01:57,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 10:01:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:57,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 10:01:57,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:01:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:57,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:01:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:58,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024731408] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:01:58,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:01:58,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-01-28 10:01:58,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863965318] [2023-01-28 10:01:58,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:01:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 10:01:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 10:01:58,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 10:01:58,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 715 [2023-01-28 10:01:58,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:58,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:58,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 715 [2023-01-28 10:01:58,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:58,407 INFO L130 PetriNetUnfolder]: 1127/1593 cut-off events. [2023-01-28 10:01:58,407 INFO L131 PetriNetUnfolder]: For 1202/1202 co-relation queries the response was YES. [2023-01-28 10:01:58,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4287 conditions, 1593 events. 1127/1593 cut-off events. For 1202/1202 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5420 event pairs, 277 based on Foata normal form. 1/1590 useless extension candidates. Maximal degree in co-relation 4264. Up to 1205 conditions per place. [2023-01-28 10:01:58,415 INFO L137 encePairwiseOnDemand]: 711/715 looper letters, 57 selfloop transitions, 4 changer transitions 3/64 dead transitions. [2023-01-28 10:01:58,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 64 transitions, 338 flow [2023-01-28 10:01:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 10:01:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 10:01:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1273 transitions. [2023-01-28 10:01:58,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451048951048951 [2023-01-28 10:01:58,420 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1273 transitions. [2023-01-28 10:01:58,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1273 transitions. [2023-01-28 10:01:58,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:58,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1273 transitions. [2023-01-28 10:01:58,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 318.25) internal successors, (1273), 4 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:58,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:58,427 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:58,427 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 138 flow. Second operand 4 states and 1273 transitions. [2023-01-28 10:01:58,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 64 transitions, 338 flow [2023-01-28 10:01:58,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 10:01:58,431 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 166 flow [2023-01-28 10:01:58,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-01-28 10:01:58,432 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-01-28 10:01:58,432 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 166 flow [2023-01-28 10:01:58,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:58,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:58,433 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:01:58,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 10:01:58,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:58,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:01:58,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:58,640 INFO L85 PathProgramCache]: Analyzing trace with hash 647196272, now seen corresponding path program 2 times [2023-01-28 10:01:58,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:58,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289881413] [2023-01-28 10:01:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:58,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:59,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:59,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289881413] [2023-01-28 10:01:59,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289881413] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:01:59,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003971512] [2023-01-28 10:01:59,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:01:59,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:59,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:01:59,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:01:59,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 10:01:59,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:01:59,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:01:59,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-28 10:01:59,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:01:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:59,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:02:00,059 INFO L321 Elim1Store]: treesize reduction 38, result has 59.1 percent of original size [2023-01-28 10:02:00,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 299 treesize of output 305 [2023-01-28 10:02:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:02:00,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003971512] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:02:00,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:02:00,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-01-28 10:02:00,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133841785] [2023-01-28 10:02:00,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:02:00,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 10:02:00,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:02:00,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 10:02:00,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-01-28 10:02:00,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 715 [2023-01-28 10:02:00,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 166 flow. Second operand has 15 states, 15 states have (on average 234.4) internal successors, (3516), 15 states have internal predecessors, (3516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:00,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:02:00,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 715 [2023-01-28 10:02:00,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:02:02,565 INFO L130 PetriNetUnfolder]: 4895/6995 cut-off events. [2023-01-28 10:02:02,565 INFO L131 PetriNetUnfolder]: For 6292/6292 co-relation queries the response was YES. [2023-01-28 10:02:02,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19324 conditions, 6995 events. 4895/6995 cut-off events. For 6292/6292 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 33236 event pairs, 1016 based on Foata normal form. 245/7222 useless extension candidates. Maximal degree in co-relation 10899. Up to 2147 conditions per place. [2023-01-28 10:02:02,607 INFO L137 encePairwiseOnDemand]: 702/715 looper letters, 211 selfloop transitions, 49 changer transitions 82/342 dead transitions. [2023-01-28 10:02:02,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 342 transitions, 1775 flow [2023-01-28 10:02:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 10:02:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 10:02:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5603 transitions. [2023-01-28 10:02:02,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34071146245059286 [2023-01-28 10:02:02,623 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5603 transitions. [2023-01-28 10:02:02,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5603 transitions. [2023-01-28 10:02:02,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:02:02,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5603 transitions. [2023-01-28 10:02:02,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 243.6086956521739) internal successors, (5603), 23 states have internal predecessors, (5603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:02,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 715.0) internal successors, (17160), 24 states have internal predecessors, (17160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:02,679 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 715.0) internal successors, (17160), 24 states have internal predecessors, (17160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:02,679 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 166 flow. Second operand 23 states and 5603 transitions. [2023-01-28 10:02:02,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 342 transitions, 1775 flow [2023-01-28 10:02:02,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 342 transitions, 1752 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-28 10:02:02,699 INFO L231 Difference]: Finished difference. Result has 78 places, 90 transitions, 656 flow [2023-01-28 10:02:02,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=656, PETRI_PLACES=78, PETRI_TRANSITIONS=90} [2023-01-28 10:02:02,701 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 40 predicate places. [2023-01-28 10:02:02,702 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 90 transitions, 656 flow [2023-01-28 10:02:02,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 234.4) internal successors, (3516), 15 states have internal predecessors, (3516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:02,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:02:02,703 INFO L208 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] [2023-01-28 10:02:02,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 10:02:02,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-01-28 10:02:02,910 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:02:02,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:02:02,911 INFO L85 PathProgramCache]: Analyzing trace with hash -89114196, now seen corresponding path program 1 times [2023-01-28 10:02:02,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:02:02,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137726933] [2023-01-28 10:02:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:02:02,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:02:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:02:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:02:04,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:02:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137726933] [2023-01-28 10:02:04,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137726933] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:02:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878301544] [2023-01-28 10:02:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:02:04,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:02:04,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:02:04,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:02:04,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 10:02:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:02:04,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 10:02:04,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:02:04,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 10:02:04,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:02:04,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:02:04,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:02:04,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:02:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:02:04,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:02:08,105 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:02:08,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 56 [2023-01-28 10:02:08,118 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 10:02:08,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1606 treesize of output 1545 [2023-01-28 10:02:08,179 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:02:08,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 378 treesize of output 330 [2023-01-28 10:02:08,193 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:02:08,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 330 treesize of output 306 [2023-01-28 10:02:08,207 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:02:08,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 306 treesize of output 210 [2023-01-28 10:02:08,225 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:02:08,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 98 [2023-01-28 10:02:08,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:02:08,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878301544] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:02:08,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:02:08,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-01-28 10:02:08,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857118394] [2023-01-28 10:02:08,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:02:08,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 10:02:08,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:02:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 10:02:08,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=561, Unknown=20, NotChecked=0, Total=756 [2023-01-28 10:02:08,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 715 [2023-01-28 10:02:08,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 90 transitions, 656 flow. Second operand has 28 states, 28 states have (on average 195.0) internal successors, (5460), 28 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:08,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:02:08,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 715 [2023-01-28 10:02:08,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:02:12,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:02:16,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:02:21,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:02:21,334 INFO L130 PetriNetUnfolder]: 6564/9556 cut-off events. [2023-01-28 10:02:21,334 INFO L131 PetriNetUnfolder]: For 15226/15226 co-relation queries the response was YES. [2023-01-28 10:02:21,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29595 conditions, 9556 events. 6564/9556 cut-off events. For 15226/15226 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 49383 event pairs, 1720 based on Foata normal form. 5/9558 useless extension candidates. Maximal degree in co-relation 28458. Up to 5440 conditions per place. [2023-01-28 10:02:21,387 INFO L137 encePairwiseOnDemand]: 695/715 looper letters, 168 selfloop transitions, 66 changer transitions 73/307 dead transitions. [2023-01-28 10:02:21,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 307 transitions, 2030 flow [2023-01-28 10:02:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 10:02:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 10:02:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5244 transitions. [2023-01-28 10:02:21,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28208714362560516 [2023-01-28 10:02:21,398 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5244 transitions. [2023-01-28 10:02:21,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5244 transitions. [2023-01-28 10:02:21,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:02:21,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5244 transitions. [2023-01-28 10:02:21,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 201.69230769230768) internal successors, (5244), 26 states have internal predecessors, (5244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:21,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 715.0) internal successors, (19305), 27 states have internal predecessors, (19305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:21,430 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 715.0) internal successors, (19305), 27 states have internal predecessors, (19305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:21,430 INFO L175 Difference]: Start difference. First operand has 78 places, 90 transitions, 656 flow. Second operand 26 states and 5244 transitions. [2023-01-28 10:02:21,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 307 transitions, 2030 flow [2023-01-28 10:02:21,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 307 transitions, 1953 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-01-28 10:02:21,461 INFO L231 Difference]: Finished difference. Result has 115 places, 138 transitions, 1191 flow [2023-01-28 10:02:21,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1191, PETRI_PLACES=115, PETRI_TRANSITIONS=138} [2023-01-28 10:02:21,462 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 77 predicate places. [2023-01-28 10:02:21,462 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 138 transitions, 1191 flow [2023-01-28 10:02:21,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 195.0) internal successors, (5460), 28 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:21,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:02:21,464 INFO L208 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] [2023-01-28 10:02:21,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 10:02:21,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:02:21,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:02:21,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:02:21,687 INFO L85 PathProgramCache]: Analyzing trace with hash 739054753, now seen corresponding path program 1 times [2023-01-28 10:02:21,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:02:21,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955003331] [2023-01-28 10:02:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:02:21,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:02:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:02:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:02:22,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:02:22,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955003331] [2023-01-28 10:02:22,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955003331] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:02:22,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61233518] [2023-01-28 10:02:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:02:22,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:02:22,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:02:22,017 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:02:22,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 10:02:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:02:22,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 10:02:22,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:02:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:02:22,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:02:23,975 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:02:23,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 740 treesize of output 815 [2023-01-28 10:02:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:02:25,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61233518] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:02:25,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:02:25,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-01-28 10:02:25,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908255077] [2023-01-28 10:02:25,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:02:25,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 10:02:25,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:02:25,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 10:02:25,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-01-28 10:02:25,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 715 [2023-01-28 10:02:25,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 138 transitions, 1191 flow. Second operand has 12 states, 12 states have (on average 224.41666666666666) internal successors, (2693), 12 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:25,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:02:25,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 715 [2023-01-28 10:02:25,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:02:28,653 INFO L130 PetriNetUnfolder]: 12724/18638 cut-off events. [2023-01-28 10:02:28,653 INFO L131 PetriNetUnfolder]: For 38782/38782 co-relation queries the response was YES. [2023-01-28 10:02:28,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60395 conditions, 18638 events. 12724/18638 cut-off events. For 38782/38782 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 107820 event pairs, 4065 based on Foata normal form. 1176/19813 useless extension candidates. Maximal degree in co-relation 57023. Up to 3743 conditions per place. [2023-01-28 10:02:28,756 INFO L137 encePairwiseOnDemand]: 707/715 looper letters, 271 selfloop transitions, 76 changer transitions 16/363 dead transitions. [2023-01-28 10:02:28,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 363 transitions, 3312 flow [2023-01-28 10:02:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 10:02:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 10:02:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3023 transitions. [2023-01-28 10:02:28,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3252286175363098 [2023-01-28 10:02:28,762 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3023 transitions. [2023-01-28 10:02:28,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3023 transitions. [2023-01-28 10:02:28,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:02:28,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3023 transitions. [2023-01-28 10:02:28,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 232.53846153846155) internal successors, (3023), 13 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:28,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 715.0) internal successors, (10010), 14 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:28,774 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 715.0) internal successors, (10010), 14 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:28,774 INFO L175 Difference]: Start difference. First operand has 115 places, 138 transitions, 1191 flow. Second operand 13 states and 3023 transitions. [2023-01-28 10:02:28,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 363 transitions, 3312 flow [2023-01-28 10:02:28,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 363 transitions, 3230 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-01-28 10:02:28,873 INFO L231 Difference]: Finished difference. Result has 127 places, 178 transitions, 1811 flow [2023-01-28 10:02:28,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1811, PETRI_PLACES=127, PETRI_TRANSITIONS=178} [2023-01-28 10:02:28,875 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 89 predicate places. [2023-01-28 10:02:28,875 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 178 transitions, 1811 flow [2023-01-28 10:02:28,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 224.41666666666666) internal successors, (2693), 12 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:28,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:02:28,876 INFO L208 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] [2023-01-28 10:02:28,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 10:02:29,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:02:29,081 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:02:29,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:02:29,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1016012573, now seen corresponding path program 1 times [2023-01-28 10:02:29,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:02:29,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916581311] [2023-01-28 10:02:29,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:02:29,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:02:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:02:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:02:29,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:02:29,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916581311] [2023-01-28 10:02:29,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916581311] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:02:29,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306270301] [2023-01-28 10:02:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:02:29,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:02:29,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:02:29,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:02:29,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 10:02:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:02:29,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 10:02:29,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:02:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:02:29,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 10:02:29,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306270301] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:02:29,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 10:02:29,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-28 10:02:29,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964427763] [2023-01-28 10:02:29,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:02:29,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:02:29,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:02:29,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:02:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-01-28 10:02:29,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 715 [2023-01-28 10:02:29,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 178 transitions, 1811 flow. Second operand has 5 states, 5 states have (on average 264.8) internal successors, (1324), 5 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:29,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:02:29,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 715 [2023-01-28 10:02:29,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:02:34,055 INFO L130 PetriNetUnfolder]: 17573/26005 cut-off events. [2023-01-28 10:02:34,055 INFO L131 PetriNetUnfolder]: For 65743/65743 co-relation queries the response was YES. [2023-01-28 10:02:34,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87960 conditions, 26005 events. 17573/26005 cut-off events. For 65743/65743 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 163334 event pairs, 10907 based on Foata normal form. 720/26723 useless extension candidates. Maximal degree in co-relation 84226. Up to 8993 conditions per place. [2023-01-28 10:02:34,266 INFO L137 encePairwiseOnDemand]: 706/715 looper letters, 273 selfloop transitions, 45 changer transitions 0/318 dead transitions. [2023-01-28 10:02:34,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 318 transitions, 3673 flow [2023-01-28 10:02:34,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:02:34,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:02:34,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1660 transitions. [2023-01-28 10:02:34,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2023-01-28 10:02:34,269 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1660 transitions. [2023-01-28 10:02:34,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1660 transitions. [2023-01-28 10:02:34,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:02:34,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1660 transitions. [2023-01-28 10:02:34,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:34,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 715.0) internal successors, (5005), 7 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:34,275 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 715.0) internal successors, (5005), 7 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:34,275 INFO L175 Difference]: Start difference. First operand has 127 places, 178 transitions, 1811 flow. Second operand 6 states and 1660 transitions. [2023-01-28 10:02:34,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 318 transitions, 3673 flow [2023-01-28 10:02:34,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 318 transitions, 3528 flow, removed 42 selfloop flow, removed 3 redundant places. [2023-01-28 10:02:34,561 INFO L231 Difference]: Finished difference. Result has 131 places, 182 transitions, 1877 flow [2023-01-28 10:02:34,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1877, PETRI_PLACES=131, PETRI_TRANSITIONS=182} [2023-01-28 10:02:34,561 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 93 predicate places. [2023-01-28 10:02:34,561 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 182 transitions, 1877 flow [2023-01-28 10:02:34,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.8) internal successors, (1324), 5 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:34,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:02:34,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:02:34,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 10:02:34,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-28 10:02:34,770 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:02:34,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:02:34,771 INFO L85 PathProgramCache]: Analyzing trace with hash 78830485, now seen corresponding path program 1 times [2023-01-28 10:02:34,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:02:34,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505627598] [2023-01-28 10:02:34,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:02:34,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:02:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:02:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:02:35,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:02:35,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505627598] [2023-01-28 10:02:35,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505627598] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:02:35,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143834908] [2023-01-28 10:02:35,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:02:35,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:02:35,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:02:35,616 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:02:35,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 10:02:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:02:35,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 10:02:35,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:02:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:02:35,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:02:37,439 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:02:37,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 419 treesize of output 602 [2023-01-28 10:02:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:02:44,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143834908] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:02:44,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:02:44,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 13 [2023-01-28 10:02:44,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895805072] [2023-01-28 10:02:44,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:02:44,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 10:02:44,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:02:44,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 10:02:44,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-01-28 10:02:44,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 715 [2023-01-28 10:02:44,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 182 transitions, 1877 flow. Second operand has 15 states, 15 states have (on average 213.93333333333334) internal successors, (3209), 15 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:44,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:02:44,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 715 [2023-01-28 10:02:44,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:02:50,959 INFO L130 PetriNetUnfolder]: 22878/34051 cut-off events. [2023-01-28 10:02:50,959 INFO L131 PetriNetUnfolder]: For 76878/76878 co-relation queries the response was YES. [2023-01-28 10:02:51,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114109 conditions, 34051 events. 22878/34051 cut-off events. For 76878/76878 co-relation queries the response was YES. Maximal size of possible extension queue 1260. Compared 224134 event pairs, 4933 based on Foata normal form. 20/34070 useless extension candidates. Maximal degree in co-relation 109974. Up to 16157 conditions per place. [2023-01-28 10:02:51,316 INFO L137 encePairwiseOnDemand]: 703/715 looper letters, 227 selfloop transitions, 135 changer transitions 98/460 dead transitions. [2023-01-28 10:02:51,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 460 transitions, 4207 flow [2023-01-28 10:02:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 10:02:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 10:02:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4053 transitions. [2023-01-28 10:02:51,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31491841491841494 [2023-01-28 10:02:51,322 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4053 transitions. [2023-01-28 10:02:51,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4053 transitions. [2023-01-28 10:02:51,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:02:51,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4053 transitions. [2023-01-28 10:02:51,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 225.16666666666666) internal successors, (4053), 18 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:51,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 715.0) internal successors, (13585), 19 states have internal predecessors, (13585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:51,337 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 715.0) internal successors, (13585), 19 states have internal predecessors, (13585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:51,337 INFO L175 Difference]: Start difference. First operand has 131 places, 182 transitions, 1877 flow. Second operand 18 states and 4053 transitions. [2023-01-28 10:02:51,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 460 transitions, 4207 flow [2023-01-28 10:02:51,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 460 transitions, 4147 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-01-28 10:02:51,995 INFO L231 Difference]: Finished difference. Result has 152 places, 236 transitions, 2892 flow [2023-01-28 10:02:51,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2892, PETRI_PLACES=152, PETRI_TRANSITIONS=236} [2023-01-28 10:02:51,995 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 114 predicate places. [2023-01-28 10:02:51,995 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 236 transitions, 2892 flow [2023-01-28 10:02:51,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 213.93333333333334) internal successors, (3209), 15 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:51,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:02:51,996 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:02:52,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 10:02:52,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:02:52,201 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:02:52,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:02:52,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1380642144, now seen corresponding path program 2 times [2023-01-28 10:02:52,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:02:52,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089976297] [2023-01-28 10:02:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:02:52,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:02:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:02:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:02:52,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:02:52,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089976297] [2023-01-28 10:02:52,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089976297] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:02:52,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457752276] [2023-01-28 10:02:52,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:02:52,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:02:52,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:02:52,661 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:02:52,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 10:02:52,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:02:52,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:02:52,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 10:02:52,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:02:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:02:53,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:02:55,371 INFO L321 Elim1Store]: treesize reduction 114, result has 68.9 percent of original size [2023-01-28 10:02:55,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 833 treesize of output 965 [2023-01-28 10:03:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:03:06,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457752276] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:03:06,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:03:06,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-01-28 10:03:06,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644914593] [2023-01-28 10:03:06,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:03:06,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 10:03:06,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:03:06,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 10:03:06,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-01-28 10:03:06,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 715 [2023-01-28 10:03:06,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 236 transitions, 2892 flow. Second operand has 14 states, 14 states have (on average 211.78571428571428) internal successors, (2965), 14 states have internal predecessors, (2965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:06,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:03:06,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 715 [2023-01-28 10:03:06,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:03:14,230 INFO L130 PetriNetUnfolder]: 21444/32006 cut-off events. [2023-01-28 10:03:14,231 INFO L131 PetriNetUnfolder]: For 98259/98259 co-relation queries the response was YES. [2023-01-28 10:03:14,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112502 conditions, 32006 events. 21444/32006 cut-off events. For 98259/98259 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 207472 event pairs, 4935 based on Foata normal form. 368/32373 useless extension candidates. Maximal degree in co-relation 107936. Up to 9078 conditions per place. [2023-01-28 10:03:14,613 INFO L137 encePairwiseOnDemand]: 703/715 looper letters, 258 selfloop transitions, 124 changer transitions 81/463 dead transitions. [2023-01-28 10:03:14,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 463 transitions, 5223 flow [2023-01-28 10:03:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 10:03:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 10:03:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3750 transitions. [2023-01-28 10:03:14,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30851501439736734 [2023-01-28 10:03:14,619 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3750 transitions. [2023-01-28 10:03:14,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3750 transitions. [2023-01-28 10:03:14,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:03:14,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3750 transitions. [2023-01-28 10:03:14,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 220.58823529411765) internal successors, (3750), 17 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:14,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 715.0) internal successors, (12870), 18 states have internal predecessors, (12870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:14,631 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 715.0) internal successors, (12870), 18 states have internal predecessors, (12870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:14,631 INFO L175 Difference]: Start difference. First operand has 152 places, 236 transitions, 2892 flow. Second operand 17 states and 3750 transitions. [2023-01-28 10:03:14,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 463 transitions, 5223 flow [2023-01-28 10:03:16,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 463 transitions, 4907 flow, removed 116 selfloop flow, removed 4 redundant places. [2023-01-28 10:03:16,006 INFO L231 Difference]: Finished difference. Result has 169 places, 245 transitions, 3179 flow [2023-01-28 10:03:16,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=2644, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3179, PETRI_PLACES=169, PETRI_TRANSITIONS=245} [2023-01-28 10:03:16,006 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 131 predicate places. [2023-01-28 10:03:16,006 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 245 transitions, 3179 flow [2023-01-28 10:03:16,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 211.78571428571428) internal successors, (2965), 14 states have internal predecessors, (2965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:16,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:03:16,007 INFO L208 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] [2023-01-28 10:03:16,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 10:03:16,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:03:16,213 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:03:16,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:03:16,214 INFO L85 PathProgramCache]: Analyzing trace with hash -319544179, now seen corresponding path program 1 times [2023-01-28 10:03:16,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:03:16,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277479304] [2023-01-28 10:03:16,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:03:16,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:03:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:03:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:03:16,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:03:16,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277479304] [2023-01-28 10:03:16,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277479304] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:03:16,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633427159] [2023-01-28 10:03:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:03:16,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:03:16,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:03:16,533 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:03:16,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 10:03:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:03:16,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 10:03:16,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:03:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:03:16,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:03:18,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:03:18,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 743 treesize of output 818 [2023-01-28 10:03:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:03:20,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633427159] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:03:20,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:03:20,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-01-28 10:03:20,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826419619] [2023-01-28 10:03:20,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:03:20,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 10:03:20,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:03:20,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 10:03:20,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-28 10:03:20,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 715 [2023-01-28 10:03:20,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 245 transitions, 3179 flow. Second operand has 9 states, 9 states have (on average 264.0) internal successors, (2376), 9 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:20,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:03:20,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 715 [2023-01-28 10:03:20,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:03:25,617 INFO L130 PetriNetUnfolder]: 17561/26237 cut-off events. [2023-01-28 10:03:25,617 INFO L131 PetriNetUnfolder]: For 97300/97300 co-relation queries the response was YES. [2023-01-28 10:03:25,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93308 conditions, 26237 events. 17561/26237 cut-off events. For 97300/97300 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 165289 event pairs, 7551 based on Foata normal form. 384/26621 useless extension candidates. Maximal degree in co-relation 89722. Up to 10716 conditions per place. [2023-01-28 10:03:26,036 INFO L137 encePairwiseOnDemand]: 711/715 looper letters, 193 selfloop transitions, 64 changer transitions 8/265 dead transitions. [2023-01-28 10:03:26,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 265 transitions, 3603 flow [2023-01-28 10:03:26,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:03:26,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:03:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1369 transitions. [2023-01-28 10:03:26,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3829370629370629 [2023-01-28 10:03:26,039 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1369 transitions. [2023-01-28 10:03:26,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1369 transitions. [2023-01-28 10:03:26,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:03:26,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1369 transitions. [2023-01-28 10:03:26,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 273.8) internal successors, (1369), 5 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:26,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 715.0) internal successors, (4290), 6 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:26,044 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 715.0) internal successors, (4290), 6 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:26,044 INFO L175 Difference]: Start difference. First operand has 169 places, 245 transitions, 3179 flow. Second operand 5 states and 1369 transitions. [2023-01-28 10:03:26,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 265 transitions, 3603 flow [2023-01-28 10:03:26,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 265 transitions, 3446 flow, removed 34 selfloop flow, removed 12 redundant places. [2023-01-28 10:03:26,935 INFO L231 Difference]: Finished difference. Result has 152 places, 224 transitions, 2897 flow [2023-01-28 10:03:26,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2897, PETRI_PLACES=152, PETRI_TRANSITIONS=224} [2023-01-28 10:03:26,936 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 114 predicate places. [2023-01-28 10:03:26,936 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 224 transitions, 2897 flow [2023-01-28 10:03:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 264.0) internal successors, (2376), 9 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:26,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:03:26,936 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:03:26,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 10:03:27,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 10:03:27,142 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:03:27,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:03:27,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1680879850, now seen corresponding path program 2 times [2023-01-28 10:03:27,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:03:27,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454618448] [2023-01-28 10:03:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:03:27,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:03:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:03:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:03:27,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:03:27,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454618448] [2023-01-28 10:03:27,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454618448] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:03:27,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568275357] [2023-01-28 10:03:27,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:03:27,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:03:27,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:03:27,681 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:03:27,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 10:03:27,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:03:27,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:03:27,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 10:03:27,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:03:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:03:28,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:03:31,710 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:03:31,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 481 treesize of output 670 [2023-01-28 10:03:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:03:39,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568275357] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:03:39,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:03:39,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2023-01-28 10:03:39,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593331049] [2023-01-28 10:03:39,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:03:39,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 10:03:39,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:03:39,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 10:03:39,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-01-28 10:03:39,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 715 [2023-01-28 10:03:39,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 224 transitions, 2897 flow. Second operand has 15 states, 15 states have (on average 221.73333333333332) internal successors, (3326), 15 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:39,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:03:39,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 715 [2023-01-28 10:03:39,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:03:44,883 INFO L130 PetriNetUnfolder]: 15147/22727 cut-off events. [2023-01-28 10:03:44,884 INFO L131 PetriNetUnfolder]: For 90440/90440 co-relation queries the response was YES. [2023-01-28 10:03:45,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79667 conditions, 22727 events. 15147/22727 cut-off events. For 90440/90440 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 141144 event pairs, 3695 based on Foata normal form. 840/23567 useless extension candidates. Maximal degree in co-relation 79149. Up to 5804 conditions per place. [2023-01-28 10:03:45,118 INFO L137 encePairwiseOnDemand]: 709/715 looper letters, 216 selfloop transitions, 61 changer transitions 76/353 dead transitions. [2023-01-28 10:03:45,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 353 transitions, 3690 flow [2023-01-28 10:03:45,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 10:03:45,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 10:03:45,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3451 transitions. [2023-01-28 10:03:45,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3217715617715618 [2023-01-28 10:03:45,123 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3451 transitions. [2023-01-28 10:03:45,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3451 transitions. [2023-01-28 10:03:45,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:03:45,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3451 transitions. [2023-01-28 10:03:45,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 230.06666666666666) internal successors, (3451), 15 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:45,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 715.0) internal successors, (11440), 16 states have internal predecessors, (11440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:45,135 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 715.0) internal successors, (11440), 16 states have internal predecessors, (11440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:45,135 INFO L175 Difference]: Start difference. First operand has 152 places, 224 transitions, 2897 flow. Second operand 15 states and 3451 transitions. [2023-01-28 10:03:45,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 353 transitions, 3690 flow [2023-01-28 10:03:45,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 353 transitions, 3482 flow, removed 45 selfloop flow, removed 16 redundant places. [2023-01-28 10:03:45,639 INFO L231 Difference]: Finished difference. Result has 142 places, 165 transitions, 1940 flow [2023-01-28 10:03:45,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1940, PETRI_PLACES=142, PETRI_TRANSITIONS=165} [2023-01-28 10:03:45,639 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2023-01-28 10:03:45,639 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 165 transitions, 1940 flow [2023-01-28 10:03:45,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 221.73333333333332) internal successors, (3326), 15 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:45,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:03:45,640 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:03:45,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 10:03:45,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 10:03:45,847 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:03:45,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:03:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1998969092, now seen corresponding path program 1 times [2023-01-28 10:03:45,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:03:45,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857304747] [2023-01-28 10:03:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:03:45,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:03:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:03:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:03:46,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:03:46,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857304747] [2023-01-28 10:03:46,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857304747] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:03:46,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043794338] [2023-01-28 10:03:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:03:46,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:03:46,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:03:46,347 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:03:46,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 10:03:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:03:46,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 10:03:46,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:03:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:03:46,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:03:51,059 INFO L321 Elim1Store]: treesize reduction 114, result has 68.9 percent of original size [2023-01-28 10:03:51,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 873 treesize of output 989 [2023-01-28 10:03:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:03:53,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043794338] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:03:53,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:03:53,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-01-28 10:03:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537511858] [2023-01-28 10:03:53,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:03:53,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 10:03:53,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:03:53,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 10:03:53,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-01-28 10:03:53,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 715 [2023-01-28 10:03:53,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 165 transitions, 1940 flow. Second operand has 15 states, 15 states have (on average 210.86666666666667) internal successors, (3163), 15 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:53,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:03:53,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 715 [2023-01-28 10:03:53,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:03:57,536 INFO L130 PetriNetUnfolder]: 11687/17331 cut-off events. [2023-01-28 10:03:57,536 INFO L131 PetriNetUnfolder]: For 61349/61349 co-relation queries the response was YES. [2023-01-28 10:03:57,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61626 conditions, 17331 events. 11687/17331 cut-off events. For 61349/61349 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 101360 event pairs, 3413 based on Foata normal form. 208/17539 useless extension candidates. Maximal degree in co-relation 47490. Up to 8681 conditions per place. [2023-01-28 10:03:57,641 INFO L137 encePairwiseOnDemand]: 703/715 looper letters, 139 selfloop transitions, 74 changer transitions 59/272 dead transitions. [2023-01-28 10:03:57,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 272 transitions, 2784 flow [2023-01-28 10:03:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 10:03:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 10:03:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2845 transitions. [2023-01-28 10:03:57,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3060785368477676 [2023-01-28 10:03:57,644 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2845 transitions. [2023-01-28 10:03:57,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2845 transitions. [2023-01-28 10:03:57,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:03:57,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2845 transitions. [2023-01-28 10:03:57,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 218.84615384615384) internal successors, (2845), 13 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:57,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 715.0) internal successors, (10010), 14 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:57,651 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 715.0) internal successors, (10010), 14 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:57,652 INFO L175 Difference]: Start difference. First operand has 142 places, 165 transitions, 1940 flow. Second operand 13 states and 2845 transitions. [2023-01-28 10:03:57,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 272 transitions, 2784 flow [2023-01-28 10:03:57,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 272 transitions, 2579 flow, removed 31 selfloop flow, removed 16 redundant places. [2023-01-28 10:03:57,866 INFO L231 Difference]: Finished difference. Result has 132 places, 158 transitions, 1818 flow [2023-01-28 10:03:57,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=1599, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1818, PETRI_PLACES=132, PETRI_TRANSITIONS=158} [2023-01-28 10:03:57,867 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 94 predicate places. [2023-01-28 10:03:57,867 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 158 transitions, 1818 flow [2023-01-28 10:03:57,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 210.86666666666667) internal successors, (3163), 15 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:57,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:03:57,867 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:03:57,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 10:03:58,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 10:03:58,073 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:03:58,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:03:58,074 INFO L85 PathProgramCache]: Analyzing trace with hash 335068409, now seen corresponding path program 2 times [2023-01-28 10:03:58,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:03:58,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720217223] [2023-01-28 10:03:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:03:58,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:03:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:03:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:03:59,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:03:59,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720217223] [2023-01-28 10:03:59,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720217223] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:03:59,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215436877] [2023-01-28 10:03:59,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:03:59,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:03:59,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:03:59,689 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:03:59,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 10:03:59,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:03:59,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:03:59,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 10:03:59,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:03:59,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 10:04:00,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:04:00,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:04:00,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:04:00,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:04:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:04:00,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:04:24,184 WARN L222 SmtUtils]: Spent 16.77s on a formula simplification. DAG size of input: 158 DAG size of output: 127 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 10:04:33,495 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:33,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 56 [2023-01-28 10:04:33,519 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 10:04:33,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25846 treesize of output 24825 [2023-01-28 10:04:33,589 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:04:33,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 171 [2023-01-28 10:04:33,607 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:04:33,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 366 treesize of output 270 [2023-01-28 10:04:33,621 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:04:33,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 99 [2023-01-28 10:04:33,641 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:04:33,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 98 [2023-01-28 10:04:33,804 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:33,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 57 [2023-01-28 10:04:33,862 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-01-28 10:04:33,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1720310 treesize of output 1650694 [2023-01-28 10:04:35,567 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:35,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6438 treesize of output 6039 [2023-01-28 10:04:35,644 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:35,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6022 treesize of output 5207 [2023-01-28 10:04:35,721 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:35,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5190 treesize of output 3543 [2023-01-28 10:04:35,814 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:35,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3526 treesize of output 3335 [2023-01-28 10:04:38,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:38,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 57 [2023-01-28 10:04:38,527 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-01-28 10:04:38,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107510 treesize of output 103174 [2023-01-28 10:04:39,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:39,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6438 treesize of output 6247 [2023-01-28 10:04:39,851 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:39,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6230 treesize of output 5831 [2023-01-28 10:04:39,992 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:39,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5814 treesize of output 4167 [2023-01-28 10:04:40,131 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:40,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4150 treesize of output 3335 [2023-01-28 10:04:50,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:50,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 57 [2023-01-28 10:04:50,733 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-01-28 10:04:50,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26870 treesize of output 25798 [2023-01-28 10:04:51,742 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:51,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6438 treesize of output 4791 [2023-01-28 10:04:51,821 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:51,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4774 treesize of output 4583 [2023-01-28 10:04:51,907 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:51,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4566 treesize of output 3751 [2023-01-28 10:04:51,985 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:51,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3734 treesize of output 3335 [2023-01-28 10:04:54,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:54,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 100 [2023-01-28 10:04:54,987 INFO L321 Elim1Store]: treesize reduction 9, result has 80.9 percent of original size [2023-01-28 10:04:54,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1687532 treesize of output 1622033 [2023-01-28 10:04:58,961 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:04:58,977 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:58,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 12652 treesize of output 11916 [2023-01-28 10:04:59,136 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:04:59,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:59,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 11884 treesize of output 11532 [2023-01-28 10:04:59,338 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:04:59,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:59,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 11500 treesize of output 9996 [2023-01-28 10:04:59,539 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:04:59,556 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:59,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 9964 treesize of output 6924 [2023-01-28 10:05:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:05:27,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215436877] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:05:27,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:05:27,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 33 [2023-01-28 10:05:27,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237747781] [2023-01-28 10:05:27,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:05:27,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-28 10:05:27,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:05:27,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-28 10:05:27,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=938, Unknown=48, NotChecked=0, Total=1190 [2023-01-28 10:05:27,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 715 [2023-01-28 10:05:27,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 158 transitions, 1818 flow. Second operand has 35 states, 35 states have (on average 175.45714285714286) internal successors, (6141), 35 states have internal predecessors, (6141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:05:27,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:05:27,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 715 [2023-01-28 10:05:27,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:06:06,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:06:34,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:06:36,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:06:38,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:06:47,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:06:49,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:06:52,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:06:54,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:06:56,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:06:58,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:07:00,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:07:02,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:07:04,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:07:06,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:07:08,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:07:10,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:07:12,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:07:15,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:07:17,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:07:17,700 INFO L130 PetriNetUnfolder]: 29942/44706 cut-off events. [2023-01-28 10:07:17,701 INFO L131 PetriNetUnfolder]: For 133688/133688 co-relation queries the response was YES. [2023-01-28 10:07:17,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154940 conditions, 44706 events. 29942/44706 cut-off events. For 133688/133688 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 307350 event pairs, 4698 based on Foata normal form. 44/44750 useless extension candidates. Maximal degree in co-relation 134630. Up to 10037 conditions per place. [2023-01-28 10:07:18,019 INFO L137 encePairwiseOnDemand]: 694/715 looper letters, 370 selfloop transitions, 261 changer transitions 218/849 dead transitions. [2023-01-28 10:07:18,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 849 transitions, 7946 flow [2023-01-28 10:07:18,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-01-28 10:07:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-01-28 10:07:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 10442 transitions. [2023-01-28 10:07:18,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2562139614771194 [2023-01-28 10:07:18,027 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 10442 transitions. [2023-01-28 10:07:18,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 10442 transitions. [2023-01-28 10:07:18,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:07:18,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 10442 transitions. [2023-01-28 10:07:18,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 183.19298245614036) internal successors, (10442), 57 states have internal predecessors, (10442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:07:18,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 715.0) internal successors, (41470), 58 states have internal predecessors, (41470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:07:18,058 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 715.0) internal successors, (41470), 58 states have internal predecessors, (41470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:07:18,058 INFO L175 Difference]: Start difference. First operand has 132 places, 158 transitions, 1818 flow. Second operand 57 states and 10442 transitions. [2023-01-28 10:07:18,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 849 transitions, 7946 flow [2023-01-28 10:07:19,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 849 transitions, 7686 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 10:07:19,097 INFO L231 Difference]: Finished difference. Result has 204 places, 377 transitions, 5408 flow [2023-01-28 10:07:19,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=5408, PETRI_PLACES=204, PETRI_TRANSITIONS=377} [2023-01-28 10:07:19,098 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 166 predicate places. [2023-01-28 10:07:19,098 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 377 transitions, 5408 flow [2023-01-28 10:07:19,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 175.45714285714286) internal successors, (6141), 35 states have internal predecessors, (6141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:07:19,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:07:19,099 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:07:19,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 10:07:19,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 10:07:19,307 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:07:19,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:07:19,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1183760367, now seen corresponding path program 1 times [2023-01-28 10:07:19,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:07:19,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207847706] [2023-01-28 10:07:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:07:19,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:07:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:07:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:07:20,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:07:20,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207847706] [2023-01-28 10:07:20,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207847706] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:07:20,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673656642] [2023-01-28 10:07:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:07:20,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:07:20,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:07:20,522 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:07:20,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 10:07:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:07:20,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-28 10:07:20,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:07:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:07:21,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:07:27,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:07:27,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 535 treesize of output 1042 [2023-01-28 10:07:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:07:53,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673656642] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:07:53,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:07:53,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2023-01-28 10:07:53,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797111887] [2023-01-28 10:07:53,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:07:53,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 10:07:53,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:07:53,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 10:07:53,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2023-01-28 10:07:53,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 715 [2023-01-28 10:07:53,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 377 transitions, 5408 flow. Second operand has 24 states, 24 states have (on average 198.0) internal successors, (4752), 24 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:07:53,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:07:53,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 715 [2023-01-28 10:07:53,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:08:11,007 INFO L130 PetriNetUnfolder]: 37084/54645 cut-off events. [2023-01-28 10:08:11,007 INFO L131 PetriNetUnfolder]: For 266102/266102 co-relation queries the response was YES. [2023-01-28 10:08:11,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238283 conditions, 54645 events. 37084/54645 cut-off events. For 266102/266102 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 374030 event pairs, 6814 based on Foata normal form. 27/54672 useless extension candidates. Maximal degree in co-relation 228884. Up to 24073 conditions per place. [2023-01-28 10:08:11,619 INFO L137 encePairwiseOnDemand]: 702/715 looper letters, 423 selfloop transitions, 296 changer transitions 47/766 dead transitions. [2023-01-28 10:08:11,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 766 transitions, 10157 flow [2023-01-28 10:08:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 10:08:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 10:08:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4613 transitions. [2023-01-28 10:08:11,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29326128417037506 [2023-01-28 10:08:11,623 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4613 transitions. [2023-01-28 10:08:11,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4613 transitions. [2023-01-28 10:08:11,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:08:11,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4613 transitions. [2023-01-28 10:08:11,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 209.6818181818182) internal successors, (4613), 22 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:08:11,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 715.0) internal successors, (16445), 23 states have internal predecessors, (16445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:08:11,635 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 715.0) internal successors, (16445), 23 states have internal predecessors, (16445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:08:11,635 INFO L175 Difference]: Start difference. First operand has 204 places, 377 transitions, 5408 flow. Second operand 22 states and 4613 transitions. [2023-01-28 10:08:11,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 766 transitions, 10157 flow [2023-01-28 10:08:14,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 766 transitions, 9085 flow, removed 429 selfloop flow, removed 10 redundant places. [2023-01-28 10:08:14,564 INFO L231 Difference]: Finished difference. Result has 225 places, 525 transitions, 7533 flow [2023-01-28 10:08:14,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=4633, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7533, PETRI_PLACES=225, PETRI_TRANSITIONS=525} [2023-01-28 10:08:14,565 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 187 predicate places. [2023-01-28 10:08:14,565 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 525 transitions, 7533 flow [2023-01-28 10:08:14,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 198.0) internal successors, (4752), 24 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:08:14,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:08:14,566 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:08:14,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 10:08:14,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 10:08:14,771 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:08:14,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:08:14,772 INFO L85 PathProgramCache]: Analyzing trace with hash -364824718, now seen corresponding path program 1 times [2023-01-28 10:08:14,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:08:14,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386034670] [2023-01-28 10:08:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:08:14,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:08:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:08:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:08:16,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:08:16,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386034670] [2023-01-28 10:08:16,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386034670] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:08:16,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505546154] [2023-01-28 10:08:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:08:16,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:08:16,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:08:16,209 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:08:16,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 10:08:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:08:16,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 10:08:16,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:08:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:08:16,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:08:21,850 INFO L321 Elim1Store]: treesize reduction 236, result has 69.3 percent of original size [2023-01-28 10:08:21,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 1318 treesize of output 1593 Received shutdown request... [2023-01-28 10:15:36,346 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 10:15:36,355 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 10:15:36,357 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 10:15:36,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 10:15:36,364 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 10:15:36,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:15:36,563 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 67ms.. [2023-01-28 10:15:36,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 10:15:36,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 10:15:36,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 10:15:36,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 10:15:36,565 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:15:36,567 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 10:15:36,567 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 10:15:36,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 10:15:36 BasicIcfg [2023-01-28 10:15:36,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 10:15:36,569 INFO L158 Benchmark]: Toolchain (without parser) took 835934.07ms. Allocated memory was 457.2MB in the beginning and 6.8GB in the end (delta: 6.3GB). Free memory was 417.5MB in the beginning and 1.5GB in the end (delta: -1.1GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. [2023-01-28 10:15:36,569 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 341.8MB. Free memory is still 293.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 10:15:36,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.48ms. Allocated memory is still 457.2MB. Free memory was 417.5MB in the beginning and 403.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 10:15:36,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.83ms. Allocated memory is still 457.2MB. Free memory was 403.7MB in the beginning and 400.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 10:15:36,570 INFO L158 Benchmark]: Boogie Preprocessor took 27.81ms. Allocated memory is still 457.2MB. Free memory was 400.3MB in the beginning and 397.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 10:15:36,571 INFO L158 Benchmark]: RCFGBuilder took 905.30ms. Allocated memory is still 457.2MB. Free memory was 397.8MB in the beginning and 408.7MB in the end (delta: -10.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.0GB. [2023-01-28 10:15:36,571 INFO L158 Benchmark]: TraceAbstraction took 834704.44ms. Allocated memory was 457.2MB in the beginning and 6.8GB in the end (delta: 6.3GB). Free memory was 407.6MB in the beginning and 1.5GB in the end (delta: -1.1GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. [2023-01-28 10:15:36,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 341.8MB. Free memory is still 293.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 257.48ms. Allocated memory is still 457.2MB. Free memory was 417.5MB in the beginning and 403.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.83ms. Allocated memory is still 457.2MB. Free memory was 403.7MB in the beginning and 400.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.81ms. Allocated memory is still 457.2MB. Free memory was 400.3MB in the beginning and 397.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 905.30ms. Allocated memory is still 457.2MB. Free memory was 397.8MB in the beginning and 408.7MB in the end (delta: -10.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.0GB. * TraceAbstraction took 834704.44ms. Allocated memory was 457.2MB in the beginning and 6.8GB in the end (delta: 6.3GB). Free memory was 407.6MB in the beginning and 1.5GB in the end (delta: -1.1GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.8s, 309 PlacesBefore, 38 PlacesAfterwards, 333 TransitionsBefore, 33 TransitionsAfterwards, 5712 CoEnabledTransitionPairs, 8 FixpointIterations, 208 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 43 TrivialYvCompositions, 14 ConcurrentYvCompositions, 29 ChoiceCompositions, 366 TotalNumberOfCompositions, 5673 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5484, independent: 5460, independent conditional: 0, independent unconditional: 5460, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3004, independent: 2991, independent conditional: 0, independent unconditional: 2991, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5484, independent: 2469, independent conditional: 0, independent unconditional: 2469, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 3004, unknown conditional: 0, unknown unconditional: 3004] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 206]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 67ms.. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 67ms.. - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 67ms.. - TimeoutResultAtElement [Line: 197]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 67ms.. - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 67ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 369 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 834.6s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 193.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.9s, HoareTripleCheckerStatistics: 441 mSolverCounterUnknown, 5704 SdHoareTripleChecker+Valid, 56.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5704 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 55.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 450 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7179 IncrementalHoareTripleChecker+Invalid, 8070 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 450 mSolverCounterUnsat, 0 mSDtfsCounter, 7179 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 901 GetRequests, 563 SyntacticMatches, 6 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3195 ImplicationChecksByTransitivity, 101.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7533occurred in iteration=18, InterpolantAutomatonStates: 245, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 182.7s InterpolantComputationTime, 868 NumberOfCodeBlocks, 868 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 1154 ConstructedInterpolants, 56 QuantifiedInterpolants, 31737 SizeOfPredicates, 496 NumberOfNonLiveVariables, 4947 ConjunctsInSsa, 198 ConjunctsInUnsatCore, 41 InterpolantComputations, 7 PerfectInterpolantSequences, 119/215 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown