/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 22:00:07,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 22:00:07,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 22:00:07,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 22:00:07,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 22:00:07,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 22:00:07,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 22:00:07,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 22:00:07,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 22:00:07,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 22:00:07,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 22:00:07,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 22:00:07,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 22:00:07,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 22:00:07,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 22:00:07,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 22:00:07,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 22:00:07,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 22:00:07,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 22:00:07,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 22:00:07,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 22:00:07,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 22:00:07,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 22:00:07,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 22:00:07,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 22:00:07,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 22:00:08,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 22:00:08,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 22:00:08,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 22:00:08,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 22:00:08,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 22:00:08,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 22:00:08,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 22:00:08,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 22:00:08,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 22:00:08,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 22:00:08,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 22:00:08,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 22:00:08,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 22:00:08,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 22:00:08,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 22:00:08,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 22:00:08,047 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 22:00:08,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 22:00:08,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 22:00:08,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 22:00:08,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 22:00:08,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 22:00:08,050 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 22:00:08,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 22:00:08,051 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 22:00:08,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 22:00:08,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 22:00:08,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 22:00:08,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 22:00:08,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 22:00:08,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 22:00:08,052 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 22:00:08,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 22:00:08,053 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 22:00:08,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 22:00:08,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 22:00:08,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 22:00:08,053 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 22:00:08,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 22:00:08,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 22:00:08,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 22:00:08,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 22:00:08,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 22:00:08,055 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 22:00:08,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 22:00:08,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 22:00:08,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 22:00:08,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 22:00:08,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 22:00:08,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 22:00:08,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 22:00:08,435 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 22:00:08,435 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 22:00:08,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2022-12-11 22:00:09,698 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 22:00:09,911 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 22:00:09,912 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2022-12-11 22:00:09,922 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b19eac9/e831ff4e1a5c47e196b5046b8eb7a2b6/FLAG15d453ee3 [2022-12-11 22:00:09,941 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b19eac9/e831ff4e1a5c47e196b5046b8eb7a2b6 [2022-12-11 22:00:09,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 22:00:09,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 22:00:09,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 22:00:09,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 22:00:09,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 22:00:09,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 10:00:09" (1/1) ... [2022-12-11 22:00:09,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ad1cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:09, skipping insertion in model container [2022-12-11 22:00:09,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 10:00:09" (1/1) ... [2022-12-11 22:00:09,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 22:00:09,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 22:00:10,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,154 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,154 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,157 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,166 WARN L237 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-ring.wvr.c[3947,3960] [2022-12-11 22:00:10,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 22:00:10,182 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 22:00:10,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,199 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,199 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:10,203 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:10,208 WARN L237 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-ring.wvr.c[3947,3960] [2022-12-11 22:00:10,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 22:00:10,224 INFO L208 MainTranslator]: Completed translation [2022-12-11 22:00:10,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10 WrapperNode [2022-12-11 22:00:10,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 22:00:10,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 22:00:10,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 22:00:10,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 22:00:10,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10" (1/1) ... [2022-12-11 22:00:10,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10" (1/1) ... [2022-12-11 22:00:10,274 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 315 [2022-12-11 22:00:10,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 22:00:10,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 22:00:10,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 22:00:10,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 22:00:10,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10" (1/1) ... [2022-12-11 22:00:10,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10" (1/1) ... [2022-12-11 22:00:10,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10" (1/1) ... [2022-12-11 22:00:10,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10" (1/1) ... [2022-12-11 22:00:10,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10" (1/1) ... [2022-12-11 22:00:10,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10" (1/1) ... [2022-12-11 22:00:10,304 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10" (1/1) ... [2022-12-11 22:00:10,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10" (1/1) ... [2022-12-11 22:00:10,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 22:00:10,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 22:00:10,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 22:00:10,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 22:00:10,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10" (1/1) ... [2022-12-11 22:00:10,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 22:00:10,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:00:10,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 22:00:10,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 22:00:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 22:00:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 22:00:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 22:00:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 22:00:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 22:00:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 22:00:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 22:00:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 22:00:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-11 22:00:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-11 22:00:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 22:00:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 22:00:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 22:00:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 22:00:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 22:00:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 22:00:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 22:00:10,389 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 22:00:10,478 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 22:00:10,480 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 22:00:11,094 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 22:00:11,229 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 22:00:11,229 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-11 22:00:11,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 10:00:11 BoogieIcfgContainer [2022-12-11 22:00:11,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 22:00:11,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 22:00:11,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 22:00:11,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 22:00:11,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 10:00:09" (1/3) ... [2022-12-11 22:00:11,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225e3822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 10:00:11, skipping insertion in model container [2022-12-11 22:00:11,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:10" (2/3) ... [2022-12-11 22:00:11,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225e3822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 10:00:11, skipping insertion in model container [2022-12-11 22:00:11,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 10:00:11" (3/3) ... [2022-12-11 22:00:11,242 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2022-12-11 22:00:11,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 22:00:11,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 22:00:11,257 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 22:00:11,353 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-11 22:00:11,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 245 transitions, 514 flow [2022-12-11 22:00:11,536 INFO L130 PetriNetUnfolder]: 22/242 cut-off events. [2022-12-11 22:00:11,536 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 22:00:11,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 242 events. 22/242 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 158 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 204. Up to 3 conditions per place. [2022-12-11 22:00:11,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 245 transitions, 514 flow [2022-12-11 22:00:11,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 232 transitions, 482 flow [2022-12-11 22:00:11,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 22:00:11,576 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;@3e2d438c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 22:00:11,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 22:00:11,625 INFO L130 PetriNetUnfolder]: 22/231 cut-off events. [2022-12-11 22:00:11,625 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 22:00:11,625 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:11,626 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:11,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:00:11,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash -44026324, now seen corresponding path program 1 times [2022-12-11 22:00:11,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:11,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364871743] [2022-12-11 22:00:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:11,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:00:12,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:12,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364871743] [2022-12-11 22:00:12,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364871743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:00:12,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:00:12,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-11 22:00:12,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581661599] [2022-12-11 22:00:12,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:00:12,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-11 22:00:12,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:12,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-11 22:00:12,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-11 22:00:12,100 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 245 [2022-12-11 22:00:12,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 232 transitions, 482 flow. Second operand has 2 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:12,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:12,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 245 [2022-12-11 22:00:12,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:12,356 INFO L130 PetriNetUnfolder]: 137/603 cut-off events. [2022-12-11 22:00:12,357 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-12-11 22:00:12,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 603 events. 137/603 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2430 event pairs, 74 based on Foata normal form. 97/633 useless extension candidates. Maximal degree in co-relation 622. Up to 197 conditions per place. [2022-12-11 22:00:12,368 INFO L137 encePairwiseOnDemand]: 229/245 looper letters, 13 selfloop transitions, 0 changer transitions 8/216 dead transitions. [2022-12-11 22:00:12,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 216 transitions, 476 flow [2022-12-11 22:00:12,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-11 22:00:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-11 22:00:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 459 transitions. [2022-12-11 22:00:12,387 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.936734693877551 [2022-12-11 22:00:12,393 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 1 predicate places. [2022-12-11 22:00:12,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 216 transitions, 476 flow [2022-12-11 22:00:12,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 208 transitions, 460 flow [2022-12-11 22:00:12,403 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 208 transitions, 460 flow [2022-12-11 22:00:12,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:12,403 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:12,404 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 22:00:12,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:00:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:12,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1988719750, now seen corresponding path program 1 times [2022-12-11 22:00:12,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:12,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109485156] [2022-12-11 22:00:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:00:13,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:13,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109485156] [2022-12-11 22:00:13,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109485156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:00:13,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:00:13,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 22:00:13,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438978220] [2022-12-11 22:00:13,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:00:13,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 22:00:13,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:13,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 22:00:13,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 22:00:13,019 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 245 [2022-12-11 22:00:13,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 208 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:13,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:13,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 245 [2022-12-11 22:00:13,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:13,152 INFO L130 PetriNetUnfolder]: 125/514 cut-off events. [2022-12-11 22:00:13,153 INFO L131 PetriNetUnfolder]: For 118/152 co-relation queries the response was YES. [2022-12-11 22:00:13,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 514 events. 125/514 cut-off events. For 118/152 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1794 event pairs, 29 based on Foata normal form. 10/490 useless extension candidates. Maximal degree in co-relation 709. Up to 186 conditions per place. [2022-12-11 22:00:13,157 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 22 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2022-12-11 22:00:13,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 215 transitions, 542 flow [2022-12-11 22:00:13,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 22:00:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 22:00:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2022-12-11 22:00:13,161 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2022-12-11 22:00:13,162 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, -5 predicate places. [2022-12-11 22:00:13,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 215 transitions, 542 flow [2022-12-11 22:00:13,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 215 transitions, 542 flow [2022-12-11 22:00:13,166 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 215 transitions, 542 flow [2022-12-11 22:00:13,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:13,167 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:13,167 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:13,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 22:00:13,167 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:00:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash 316028106, now seen corresponding path program 2 times [2022-12-11 22:00:13,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:13,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11304587] [2022-12-11 22:00:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:13,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:00:13,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:13,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11304587] [2022-12-11 22:00:13,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11304587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:00:13,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:00:13,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 22:00:13,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936732959] [2022-12-11 22:00:13,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:00:13,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 22:00:13,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:13,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 22:00:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 22:00:13,690 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 245 [2022-12-11 22:00:13,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 215 transitions, 542 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:13,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:13,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 245 [2022-12-11 22:00:13,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:13,930 INFO L130 PetriNetUnfolder]: 149/673 cut-off events. [2022-12-11 22:00:13,931 INFO L131 PetriNetUnfolder]: For 325/437 co-relation queries the response was YES. [2022-12-11 22:00:13,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 673 events. 149/673 cut-off events. For 325/437 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2590 event pairs, 55 based on Foata normal form. 9/643 useless extension candidates. Maximal degree in co-relation 849. Up to 222 conditions per place. [2022-12-11 22:00:13,938 INFO L137 encePairwiseOnDemand]: 235/245 looper letters, 54 selfloop transitions, 8 changer transitions 21/240 dead transitions. [2022-12-11 22:00:13,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 240 transitions, 802 flow [2022-12-11 22:00:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 22:00:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 22:00:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1670 transitions. [2022-12-11 22:00:13,966 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7573696145124716 [2022-12-11 22:00:13,966 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 3 predicate places. [2022-12-11 22:00:13,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 240 transitions, 802 flow [2022-12-11 22:00:13,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 219 transitions, 674 flow [2022-12-11 22:00:13,970 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 219 transitions, 674 flow [2022-12-11 22:00:13,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:13,972 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:13,972 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:13,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 22:00:13,972 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:00:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:13,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1755503341, now seen corresponding path program 1 times [2022-12-11 22:00:13,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:13,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061417213] [2022-12-11 22:00:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:13,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 22:00:14,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:14,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061417213] [2022-12-11 22:00:14,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061417213] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:00:14,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:00:14,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 22:00:14,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910951866] [2022-12-11 22:00:14,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:00:14,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 22:00:14,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:14,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 22:00:14,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 22:00:14,242 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 245 [2022-12-11 22:00:14,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 219 transitions, 674 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:14,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:14,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 245 [2022-12-11 22:00:14,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:14,339 INFO L130 PetriNetUnfolder]: 95/477 cut-off events. [2022-12-11 22:00:14,339 INFO L131 PetriNetUnfolder]: For 381/477 co-relation queries the response was YES. [2022-12-11 22:00:14,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 477 events. 95/477 cut-off events. For 381/477 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1456 event pairs, 18 based on Foata normal form. 2/453 useless extension candidates. Maximal degree in co-relation 760. Up to 171 conditions per place. [2022-12-11 22:00:14,343 INFO L137 encePairwiseOnDemand]: 241/245 looper letters, 25 selfloop transitions, 3 changer transitions 0/223 dead transitions. [2022-12-11 22:00:14,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 223 transitions, 768 flow [2022-12-11 22:00:14,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 22:00:14,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 22:00:14,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2022-12-11 22:00:14,345 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.891156462585034 [2022-12-11 22:00:14,347 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 3 predicate places. [2022-12-11 22:00:14,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 223 transitions, 768 flow [2022-12-11 22:00:14,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 223 transitions, 768 flow [2022-12-11 22:00:14,351 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 223 transitions, 768 flow [2022-12-11 22:00:14,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:14,352 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:14,352 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:14,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 22:00:14,352 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:00:14,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:14,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1756701083, now seen corresponding path program 2 times [2022-12-11 22:00:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:14,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303313178] [2022-12-11 22:00:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:14,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 22:00:14,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:14,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303313178] [2022-12-11 22:00:14,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303313178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:00:14,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:00:14,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 22:00:14,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623265841] [2022-12-11 22:00:14,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:00:14,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 22:00:14,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:14,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 22:00:14,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 22:00:14,745 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 245 [2022-12-11 22:00:14,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 223 transitions, 768 flow. Second operand has 6 states, 6 states have (on average 183.83333333333334) internal successors, (1103), 6 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:14,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:14,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 245 [2022-12-11 22:00:14,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:14,979 INFO L130 PetriNetUnfolder]: 97/598 cut-off events. [2022-12-11 22:00:14,979 INFO L131 PetriNetUnfolder]: For 688/828 co-relation queries the response was YES. [2022-12-11 22:00:14,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1568 conditions, 598 events. 97/598 cut-off events. For 688/828 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1792 event pairs, 18 based on Foata normal form. 6/574 useless extension candidates. Maximal degree in co-relation 876. Up to 190 conditions per place. [2022-12-11 22:00:14,983 INFO L137 encePairwiseOnDemand]: 234/245 looper letters, 62 selfloop transitions, 8 changer transitions 32/259 dead transitions. [2022-12-11 22:00:14,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 259 transitions, 1143 flow [2022-12-11 22:00:14,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 22:00:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 22:00:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1678 transitions. [2022-12-11 22:00:14,988 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7609977324263039 [2022-12-11 22:00:14,990 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 11 predicate places. [2022-12-11 22:00:14,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 259 transitions, 1143 flow [2022-12-11 22:00:14,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 227 transitions, 924 flow [2022-12-11 22:00:14,995 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 227 transitions, 924 flow [2022-12-11 22:00:14,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.83333333333334) internal successors, (1103), 6 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:14,996 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:14,997 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:14,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 22:00:14,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:00:14,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:14,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1915561032, now seen corresponding path program 1 times [2022-12-11 22:00:14,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:14,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763452568] [2022-12-11 22:00:14,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 22:00:15,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:15,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763452568] [2022-12-11 22:00:15,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763452568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:00:15,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:00:15,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 22:00:15,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740137809] [2022-12-11 22:00:15,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:00:15,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 22:00:15,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 22:00:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 22:00:15,245 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 245 [2022-12-11 22:00:15,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 227 transitions, 924 flow. Second operand has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:15,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:15,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 245 [2022-12-11 22:00:15,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:15,470 INFO L130 PetriNetUnfolder]: 193/798 cut-off events. [2022-12-11 22:00:15,470 INFO L131 PetriNetUnfolder]: For 1919/2051 co-relation queries the response was YES. [2022-12-11 22:00:15,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 798 events. 193/798 cut-off events. For 1919/2051 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3815 event pairs, 29 based on Foata normal form. 1/742 useless extension candidates. Maximal degree in co-relation 2180. Up to 311 conditions per place. [2022-12-11 22:00:15,477 INFO L137 encePairwiseOnDemand]: 240/245 looper letters, 68 selfloop transitions, 2 changer transitions 8/246 dead transitions. [2022-12-11 22:00:15,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 246 transitions, 1289 flow [2022-12-11 22:00:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 22:00:15,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 22:00:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 925 transitions. [2022-12-11 22:00:15,480 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7551020408163265 [2022-12-11 22:00:15,482 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 13 predicate places. [2022-12-11 22:00:15,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 246 transitions, 1289 flow [2022-12-11 22:00:15,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 238 transitions, 1195 flow [2022-12-11 22:00:15,489 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 238 transitions, 1195 flow [2022-12-11 22:00:15,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:15,490 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:15,490 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:15,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 22:00:15,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:00:15,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:15,491 INFO L85 PathProgramCache]: Analyzing trace with hash 722068867, now seen corresponding path program 1 times [2022-12-11 22:00:15,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:15,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159646050] [2022-12-11 22:00:15,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:15,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 22:00:15,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:15,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159646050] [2022-12-11 22:00:15,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159646050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:00:15,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:00:15,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 22:00:15,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791115155] [2022-12-11 22:00:15,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:00:15,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 22:00:15,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:15,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 22:00:15,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 22:00:15,776 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 245 [2022-12-11 22:00:15,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 238 transitions, 1195 flow. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:15,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:15,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 245 [2022-12-11 22:00:15,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:15,861 INFO L130 PetriNetUnfolder]: 74/353 cut-off events. [2022-12-11 22:00:15,861 INFO L131 PetriNetUnfolder]: For 754/838 co-relation queries the response was YES. [2022-12-11 22:00:15,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 353 events. 74/353 cut-off events. For 754/838 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 621 event pairs, 14 based on Foata normal form. 11/348 useless extension candidates. Maximal degree in co-relation 882. Up to 137 conditions per place. [2022-12-11 22:00:15,865 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 30 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2022-12-11 22:00:15,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 232 transitions, 1163 flow [2022-12-11 22:00:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 22:00:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 22:00:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2022-12-11 22:00:15,867 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8925170068027211 [2022-12-11 22:00:15,868 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 13 predicate places. [2022-12-11 22:00:15,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 232 transitions, 1163 flow [2022-12-11 22:00:15,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 232 transitions, 1163 flow [2022-12-11 22:00:15,872 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 232 transitions, 1163 flow [2022-12-11 22:00:15,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:15,873 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:15,873 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:15,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 22:00:15,873 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:00:15,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:15,874 INFO L85 PathProgramCache]: Analyzing trace with hash -116690997, now seen corresponding path program 2 times [2022-12-11 22:00:15,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:15,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883268765] [2022-12-11 22:00:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:15,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 22:00:16,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:16,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883268765] [2022-12-11 22:00:16,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883268765] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:00:16,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687232296] [2022-12-11 22:00:16,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 22:00:16,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:16,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:00:16,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 22:00:16,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 22:00:16,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 22:00:16,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:00:16,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-11 22:00:16,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:00:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 22:00:16,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 22:00:16,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687232296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:00:16,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 22:00:16,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-12-11 22:00:16,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107803912] [2022-12-11 22:00:16,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:00:16,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 22:00:16,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:16,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 22:00:16,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-11 22:00:16,890 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 245 [2022-12-11 22:00:16,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 232 transitions, 1163 flow. Second operand has 6 states, 6 states have (on average 184.83333333333334) internal successors, (1109), 6 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:16,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:16,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 245 [2022-12-11 22:00:16,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:17,098 INFO L130 PetriNetUnfolder]: 85/478 cut-off events. [2022-12-11 22:00:17,099 INFO L131 PetriNetUnfolder]: For 1723/1967 co-relation queries the response was YES. [2022-12-11 22:00:17,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 478 events. 85/478 cut-off events. For 1723/1967 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1219 event pairs, 19 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 930. Up to 167 conditions per place. [2022-12-11 22:00:17,103 INFO L137 encePairwiseOnDemand]: 237/245 looper letters, 72 selfloop transitions, 6 changer transitions 13/249 dead transitions. [2022-12-11 22:00:17,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 249 transitions, 1585 flow [2022-12-11 22:00:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 22:00:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 22:00:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1303 transitions. [2022-12-11 22:00:17,106 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7597667638483965 [2022-12-11 22:00:17,108 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 19 predicate places. [2022-12-11 22:00:17,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 249 transitions, 1585 flow [2022-12-11 22:00:17,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 236 transitions, 1343 flow [2022-12-11 22:00:17,112 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 236 transitions, 1343 flow [2022-12-11 22:00:17,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 184.83333333333334) internal successors, (1109), 6 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:17,113 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:17,113 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:17,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 22:00:17,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:17,320 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:00:17,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash 318987045, now seen corresponding path program 1 times [2022-12-11 22:00:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:17,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103394643] [2022-12-11 22:00:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:17,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 22:00:17,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:17,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103394643] [2022-12-11 22:00:17,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103394643] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:00:17,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843919074] [2022-12-11 22:00:17,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:17,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:17,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:00:17,916 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) [2022-12-11 22:00:17,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 22:00:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:18,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-11 22:00:18,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:00:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 22:00:18,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:00:18,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2022-12-11 22:00:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 22:00:18,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843919074] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:00:18,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:00:18,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-12-11 22:00:18,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637288908] [2022-12-11 22:00:18,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:00:18,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-11 22:00:18,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:18,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-11 22:00:18,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-12-11 22:00:18,989 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 245 [2022-12-11 22:00:18,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 236 transitions, 1343 flow. Second operand has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:18,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:18,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 245 [2022-12-11 22:00:18,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:19,559 INFO L130 PetriNetUnfolder]: 109/617 cut-off events. [2022-12-11 22:00:19,560 INFO L131 PetriNetUnfolder]: For 2881/3231 co-relation queries the response was YES. [2022-12-11 22:00:19,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 617 events. 109/617 cut-off events. For 2881/3231 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1711 event pairs, 20 based on Foata normal form. 13/597 useless extension candidates. Maximal degree in co-relation 1024. Up to 227 conditions per place. [2022-12-11 22:00:19,566 INFO L137 encePairwiseOnDemand]: 224/245 looper letters, 66 selfloop transitions, 24 changer transitions 60/301 dead transitions. [2022-12-11 22:00:19,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 301 transitions, 2396 flow [2022-12-11 22:00:19,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-11 22:00:19,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-11 22:00:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3514 transitions. [2022-12-11 22:00:19,575 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7171428571428572 [2022-12-11 22:00:19,575 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 37 predicate places. [2022-12-11 22:00:19,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 301 transitions, 2396 flow [2022-12-11 22:00:19,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 241 transitions, 1557 flow [2022-12-11 22:00:19,582 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 241 transitions, 1557 flow [2022-12-11 22:00:19,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:19,585 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:19,585 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:19,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 22:00:19,791 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,SelfDestructingSolverStorable8 [2022-12-11 22:00:19,792 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 1 more)] === [2022-12-11 22:00:19,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash 104744384, now seen corresponding path program 2 times [2022-12-11 22:00:19,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:19,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014820808] [2022-12-11 22:00:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:19,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 22:00:21,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:21,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014820808] [2022-12-11 22:00:21,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014820808] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:00:21,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121215426] [2022-12-11 22:00:21,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 22:00:21,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:21,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:00:21,855 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) [2022-12-11 22:00:21,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 22:00:22,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 22:00:22,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:00:22,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-11 22:00:22,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:00:23,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 22:00:23,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-11 22:00:23,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 22:00:23,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-11 22:00:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 22:00:24,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:00:24,800 INFO L321 Elim1Store]: treesize reduction 25, result has 32.4 percent of original size [2022-12-11 22:00:24,800 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 152 treesize of output 140 [2022-12-11 22:00:24,814 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 22:00:24,814 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 124 treesize of output 100 [2022-12-11 22:00:24,826 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 22:00:24,826 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 79 treesize of output 67 [2022-12-11 22:00:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 22:00:27,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121215426] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:00:27,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:00:27,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 61 [2022-12-11 22:00:27,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575972247] [2022-12-11 22:00:27,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:00:27,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-12-11 22:00:27,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:27,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-12-11 22:00:27,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=3401, Unknown=0, NotChecked=0, Total=3660 [2022-12-11 22:00:27,049 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 245 [2022-12-11 22:00:27,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 241 transitions, 1557 flow. Second operand has 61 states, 61 states have (on average 135.13114754098362) internal successors, (8243), 61 states have internal predecessors, (8243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:27,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:27,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 245 [2022-12-11 22:00:27,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:39,732 INFO L130 PetriNetUnfolder]: 4780/10643 cut-off events. [2022-12-11 22:00:39,732 INFO L131 PetriNetUnfolder]: For 127337/131726 co-relation queries the response was YES. [2022-12-11 22:00:39,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59690 conditions, 10643 events. 4780/10643 cut-off events. For 127337/131726 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 89612 event pairs, 392 based on Foata normal form. 356/10121 useless extension candidates. Maximal degree in co-relation 25612. Up to 4607 conditions per place. [2022-12-11 22:00:39,939 INFO L137 encePairwiseOnDemand]: 191/245 looper letters, 528 selfloop transitions, 152 changer transitions 50/846 dead transitions. [2022-12-11 22:00:39,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 846 transitions, 11169 flow [2022-12-11 22:00:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-12-11 22:00:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2022-12-11 22:00:39,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 11255 transitions. [2022-12-11 22:00:39,967 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5671453766691862 [2022-12-11 22:00:39,970 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 110 predicate places. [2022-12-11 22:00:39,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 846 transitions, 11169 flow [2022-12-11 22:00:40,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 330 places, 796 transitions, 10165 flow [2022-12-11 22:00:40,056 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 796 transitions, 10165 flow [2022-12-11 22:00:40,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 135.13114754098362) internal successors, (8243), 61 states have internal predecessors, (8243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:40,062 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:40,063 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:40,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 22:00:40,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:40,271 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 1 more)] === [2022-12-11 22:00:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:40,272 INFO L85 PathProgramCache]: Analyzing trace with hash -425314798, now seen corresponding path program 3 times [2022-12-11 22:00:40,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:40,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86788666] [2022-12-11 22:00:40,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:40,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 22:00:41,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:41,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86788666] [2022-12-11 22:00:41,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86788666] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:00:41,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653267853] [2022-12-11 22:00:41,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 22:00:41,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:41,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:00:41,722 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) [2022-12-11 22:00:41,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 22:00:41,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-11 22:00:41,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:00:41,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-11 22:00:41,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:00:42,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-11 22:00:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 22:00:42,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:00:42,140 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-11 22:00:42,140 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 24 treesize of output 15 [2022-12-11 22:00:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 22:00:42,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653267853] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:00:42,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:00:42,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 5, 5] total 25 [2022-12-11 22:00:42,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566955684] [2022-12-11 22:00:42,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:00:42,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-11 22:00:42,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:42,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-11 22:00:42,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-12-11 22:00:42,203 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 245 [2022-12-11 22:00:42,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 796 transitions, 10165 flow. Second operand has 25 states, 25 states have (on average 146.24) internal successors, (3656), 25 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:42,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:42,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 245 [2022-12-11 22:00:42,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:45,580 INFO L130 PetriNetUnfolder]: 4435/10072 cut-off events. [2022-12-11 22:00:45,581 INFO L131 PetriNetUnfolder]: For 122991/128550 co-relation queries the response was YES. [2022-12-11 22:00:45,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62700 conditions, 10072 events. 4435/10072 cut-off events. For 122991/128550 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 84179 event pairs, 342 based on Foata normal form. 108/9419 useless extension candidates. Maximal degree in co-relation 24453. Up to 4310 conditions per place. [2022-12-11 22:00:45,693 INFO L137 encePairwiseOnDemand]: 220/245 looper letters, 848 selfloop transitions, 147 changer transitions 1/1116 dead transitions. [2022-12-11 22:00:45,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1116 transitions, 17604 flow [2022-12-11 22:00:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-11 22:00:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-11 22:00:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 5576 transitions. [2022-12-11 22:00:45,701 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5989258861439313 [2022-12-11 22:00:45,701 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 147 predicate places. [2022-12-11 22:00:45,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 1116 transitions, 17604 flow [2022-12-11 22:00:45,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 1115 transitions, 17598 flow [2022-12-11 22:00:45,785 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 1115 transitions, 17598 flow [2022-12-11 22:00:45,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 146.24) internal successors, (3656), 25 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:45,787 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:45,787 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:45,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-11 22:00:45,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:45,994 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 1 more)] === [2022-12-11 22:00:45,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1883894856, now seen corresponding path program 4 times [2022-12-11 22:00:45,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:45,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624216827] [2022-12-11 22:00:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 22:00:47,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:47,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624216827] [2022-12-11 22:00:47,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624216827] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:00:47,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012312952] [2022-12-11 22:00:47,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 22:00:47,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:47,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:00:47,801 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) [2022-12-11 22:00:47,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 22:00:47,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 22:00:47,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:00:47,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-11 22:00:47,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:00:48,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 22:00:48,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-11 22:00:48,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:00:48,715 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 36 treesize of output 10 [2022-12-11 22:00:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 22:00:48,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:00:49,209 INFO L321 Elim1Store]: treesize reduction 15, result has 44.4 percent of original size [2022-12-11 22:00:49,210 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 76 treesize of output 63 [2022-12-11 22:00:49,222 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-11 22:00:49,222 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 39 treesize of output 26 [2022-12-11 22:00:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 22:00:49,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012312952] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:00:49,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:00:49,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13, 13] total 48 [2022-12-11 22:00:49,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90275035] [2022-12-11 22:00:49,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:00:49,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-11 22:00:49,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:49,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-11 22:00:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2107, Unknown=0, NotChecked=0, Total=2256 [2022-12-11 22:00:49,747 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 245 [2022-12-11 22:00:49,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 1115 transitions, 17598 flow. Second operand has 48 states, 48 states have (on average 100.83333333333333) internal successors, (4840), 48 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:49,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:49,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 245 [2022-12-11 22:00:49,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:58,315 INFO L130 PetriNetUnfolder]: 6470/14410 cut-off events. [2022-12-11 22:00:58,315 INFO L131 PetriNetUnfolder]: For 214002/225134 co-relation queries the response was YES. [2022-12-11 22:00:58,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101458 conditions, 14410 events. 6470/14410 cut-off events. For 214002/225134 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 128674 event pairs, 455 based on Foata normal form. 573/13962 useless extension candidates. Maximal degree in co-relation 29289. Up to 6369 conditions per place. [2022-12-11 22:00:58,615 INFO L137 encePairwiseOnDemand]: 206/245 looper letters, 1219 selfloop transitions, 258 changer transitions 4/1568 dead transitions. [2022-12-11 22:00:58,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 1568 transitions, 28221 flow [2022-12-11 22:00:58,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-11 22:00:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-12-11 22:00:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 7000 transitions. [2022-12-11 22:00:58,627 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4140786749482402 [2022-12-11 22:00:58,627 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 215 predicate places. [2022-12-11 22:00:58,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 435 places, 1568 transitions, 28221 flow [2022-12-11 22:00:58,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 1564 transitions, 28153 flow [2022-12-11 22:00:58,762 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 1564 transitions, 28153 flow [2022-12-11 22:00:58,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 100.83333333333333) internal successors, (4840), 48 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:00:58,764 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:58,764 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:58,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-11 22:00:58,974 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,SelfDestructingSolverStorable11 [2022-12-11 22:00:58,974 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 1 more)] === [2022-12-11 22:00:58,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:58,975 INFO L85 PathProgramCache]: Analyzing trace with hash 442240134, now seen corresponding path program 5 times [2022-12-11 22:00:58,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:58,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865981860] [2022-12-11 22:00:58,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:58,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 22:00:59,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:59,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865981860] [2022-12-11 22:00:59,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865981860] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:00:59,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788035551] [2022-12-11 22:00:59,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 22:00:59,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:59,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:00:59,775 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) [2022-12-11 22:00:59,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 22:00:59,968 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-11 22:00:59,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:00:59,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-11 22:00:59,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:00:59,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 22:01:00,005 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-11 22:01:00,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-11 22:01:00,158 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-11 22:01:00,158 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 16 treesize of output 18 [2022-12-11 22:01:00,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-11 22:01:01,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-11 22:01:01,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-11 22:01:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 22:01:01,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:01:01,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:01:01,505 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 158 treesize of output 146 [2022-12-11 22:01:01,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2022-12-11 22:01:01,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-12-11 22:01:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 22:01:02,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788035551] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:01:02,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:01:02,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 33 [2022-12-11 22:01:02,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169862916] [2022-12-11 22:01:02,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:01:02,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-11 22:01:02,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:01:02,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-11 22:01:02,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=939, Unknown=1, NotChecked=0, Total=1056 [2022-12-11 22:01:02,088 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 245 [2022-12-11 22:01:02,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 1564 transitions, 28153 flow. Second operand has 33 states, 33 states have (on average 160.36363636363637) internal successors, (5292), 33 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:01:02,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:01:02,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 245 [2022-12-11 22:01:02,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:01:05,821 INFO L130 PetriNetUnfolder]: 4175/9322 cut-off events. [2022-12-11 22:01:05,821 INFO L131 PetriNetUnfolder]: For 159801/168311 co-relation queries the response was YES. [2022-12-11 22:01:05,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72514 conditions, 9322 events. 4175/9322 cut-off events. For 159801/168311 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 75556 event pairs, 282 based on Foata normal form. 326/9064 useless extension candidates. Maximal degree in co-relation 41893. Up to 4210 conditions per place. [2022-12-11 22:01:05,908 INFO L137 encePairwiseOnDemand]: 215/245 looper letters, 753 selfloop transitions, 147 changer transitions 0/1131 dead transitions. [2022-12-11 22:01:05,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 1131 transitions, 21343 flow [2022-12-11 22:01:05,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-11 22:01:05,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-11 22:01:05,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4034 transitions. [2022-12-11 22:01:05,914 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6586122448979592 [2022-12-11 22:01:05,915 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 203 predicate places. [2022-12-11 22:01:05,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 1131 transitions, 21343 flow [2022-12-11 22:01:05,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 1131 transitions, 21343 flow [2022-12-11 22:01:05,987 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 1131 transitions, 21343 flow [2022-12-11 22:01:05,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 160.36363636363637) internal successors, (5292), 33 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:01:05,989 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:01:05,989 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:01:05,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-11 22:01:06,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:01:06,197 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 1 more)] === [2022-12-11 22:01:06,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:01:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash 399306722, now seen corresponding path program 1 times [2022-12-11 22:01:06,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:01:06,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643159749] [2022-12-11 22:01:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:01:06,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:01:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:01:06,687 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-11 22:01:06,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:01:06,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643159749] [2022-12-11 22:01:06,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643159749] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:01:06,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907287823] [2022-12-11 22:01:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:01:06,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:01:06,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:01:06,692 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) [2022-12-11 22:01:06,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-11 22:01:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:01:06,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-11 22:01:06,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:01:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-11 22:01:07,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:01:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-11 22:01:07,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907287823] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:01:07,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:01:07,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-12-11 22:01:07,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367249231] [2022-12-11 22:01:07,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:01:07,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-11 22:01:07,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:01:07,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-11 22:01:07,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-12-11 22:01:07,791 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 245 [2022-12-11 22:01:07,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 1131 transitions, 21343 flow. Second operand has 25 states, 25 states have (on average 174.32) internal successors, (4358), 25 states have internal predecessors, (4358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:01:07,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:01:07,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 245 [2022-12-11 22:01:07,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:01:11,786 INFO L130 PetriNetUnfolder]: 7212/16360 cut-off events. [2022-12-11 22:01:11,786 INFO L131 PetriNetUnfolder]: For 324901/342517 co-relation queries the response was YES. [2022-12-11 22:01:11,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133224 conditions, 16360 events. 7212/16360 cut-off events. For 324901/342517 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 148567 event pairs, 494 based on Foata normal form. 460/15789 useless extension candidates. Maximal degree in co-relation 44415. Up to 7309 conditions per place. [2022-12-11 22:01:11,899 INFO L137 encePairwiseOnDemand]: 225/245 looper letters, 617 selfloop transitions, 57 changer transitions 514/1649 dead transitions. [2022-12-11 22:01:11,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 1649 transitions, 37846 flow [2022-12-11 22:01:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-11 22:01:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-11 22:01:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3503 transitions. [2022-12-11 22:01:11,903 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7148979591836735 [2022-12-11 22:01:11,903 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 222 predicate places. [2022-12-11 22:01:11,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 442 places, 1649 transitions, 37846 flow [2022-12-11 22:01:11,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 1135 transitions, 22751 flow [2022-12-11 22:01:11,981 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 1135 transitions, 22751 flow [2022-12-11 22:01:11,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 174.32) internal successors, (4358), 25 states have internal predecessors, (4358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:01:11,983 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:01:11,984 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:01:11,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-11 22:01:12,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:01:12,191 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 1 more)] === [2022-12-11 22:01:12,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:01:12,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1120724555, now seen corresponding path program 2 times [2022-12-11 22:01:12,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:01:12,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887646399] [2022-12-11 22:01:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:01:12,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:01:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:01:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-11 22:01:13,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:01:13,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887646399] [2022-12-11 22:01:13,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887646399] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:01:13,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452199142] [2022-12-11 22:01:13,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 22:01:13,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:01:13,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:01:13,958 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) [2022-12-11 22:01:13,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-11 22:01:14,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 22:01:14,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:01:14,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-11 22:01:14,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:01:16,005 INFO L321 Elim1Store]: treesize reduction 57, result has 43.0 percent of original size [2022-12-11 22:01:16,005 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 57 treesize of output 57 [2022-12-11 22:01:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 22:01:16,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:01:16,735 INFO L321 Elim1Store]: treesize reduction 28, result has 82.8 percent of original size [2022-12-11 22:01:16,735 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 58 treesize of output 152 [2022-12-11 22:01:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 22:01:18,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452199142] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:01:18,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:01:18,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26, 26] total 68 [2022-12-11 22:01:18,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743807942] [2022-12-11 22:01:18,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:01:18,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-12-11 22:01:18,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:01:18,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-12-11 22:01:18,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=4028, Unknown=0, NotChecked=0, Total=4556 [2022-12-11 22:01:18,328 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 245 [2022-12-11 22:01:18,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 1135 transitions, 22751 flow. Second operand has 68 states, 68 states have (on average 131.36764705882354) internal successors, (8933), 68 states have internal predecessors, (8933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:01:18,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:01:18,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 245 [2022-12-11 22:01:18,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:02:16,693 INFO L130 PetriNetUnfolder]: 77735/151285 cut-off events. [2022-12-11 22:02:16,693 INFO L131 PetriNetUnfolder]: For 3467134/3645478 co-relation queries the response was YES. [2022-12-11 22:02:17,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207191 conditions, 151285 events. 77735/151285 cut-off events. For 3467134/3645478 co-relation queries the response was YES. Maximal size of possible extension queue 3838. Compared 1685692 event pairs, 3434 based on Foata normal form. 5063/144335 useless extension candidates. Maximal degree in co-relation 747075. Up to 61705 conditions per place. [2022-12-11 22:02:18,450 INFO L137 encePairwiseOnDemand]: 198/245 looper letters, 8391 selfloop transitions, 2464 changer transitions 29/11021 dead transitions. [2022-12-11 22:02:18,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 11021 transitions, 262618 flow [2022-12-11 22:02:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-12-11 22:02:18,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2022-12-11 22:02:18,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 24794 transitions. [2022-12-11 22:02:18,479 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5530054644808743 [2022-12-11 22:02:18,479 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 397 predicate places. [2022-12-11 22:02:18,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 617 places, 11021 transitions, 262618 flow [2022-12-11 22:02:19,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 615 places, 10992 transitions, 262066 flow [2022-12-11 22:02:19,767 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 10992 transitions, 262066 flow [2022-12-11 22:02:19,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 131.36764705882354) internal successors, (8933), 68 states have internal predecessors, (8933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:02:19,769 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:02:19,770 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:02:19,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-11 22:02:19,977 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,SelfDestructingSolverStorable14 [2022-12-11 22:02:19,977 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 1 more)] === [2022-12-11 22:02:19,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:02:19,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1629995769, now seen corresponding path program 3 times [2022-12-11 22:02:19,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:02:19,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971460490] [2022-12-11 22:02:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:02:19,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:02:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:02:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-11 22:02:21,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:02:21,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971460490] [2022-12-11 22:02:21,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971460490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:02:21,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:02:21,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 22:02:21,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624131740] [2022-12-11 22:02:21,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:02:21,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 22:02:21,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:02:21,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 22:02:21,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-12-11 22:02:21,086 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 245 [2022-12-11 22:02:21,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 10992 transitions, 262066 flow. Second operand has 16 states, 16 states have (on average 152.875) internal successors, (2446), 16 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:02:21,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:02:21,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 245 [2022-12-11 22:02:21,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:07:39,691 INFO L130 PetriNetUnfolder]: 86929/168249 cut-off events. [2022-12-11 22:07:39,691 INFO L131 PetriNetUnfolder]: For 4152789/4383317 co-relation queries the response was YES. [2022-12-11 22:07:40,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1446952 conditions, 168249 events. 86929/168249 cut-off events. For 4152789/4383317 co-relation queries the response was YES. Maximal size of possible extension queue 4217. Compared 1883801 event pairs, 4225 based on Foata normal form. 5821/161531 useless extension candidates. Maximal degree in co-relation 886645. Up to 84755 conditions per place. [2022-12-11 22:07:41,940 INFO L137 encePairwiseOnDemand]: 213/245 looper letters, 11355 selfloop transitions, 874 changer transitions 0/12496 dead transitions. [2022-12-11 22:07:41,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 12496 transitions, 320952 flow [2022-12-11 22:07:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-11 22:07:41,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-11 22:07:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3377 transitions. [2022-12-11 22:07:41,942 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6265306122448979 [2022-12-11 22:07:41,943 INFO L295 CegarLoopForPetriNet]: 220 programPoint places, 403 predicate places. [2022-12-11 22:07:41,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 623 places, 12496 transitions, 320952 flow [2022-12-11 22:07:43,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 623 places, 12496 transitions, 320952 flow [2022-12-11 22:07:43,278 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 12496 transitions, 320952 flow [2022-12-11 22:07:43,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 152.875) internal successors, (2446), 16 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:07:43,278 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:07:43,278 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:07:43,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-11 22:07:43,279 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 1 more)] === [2022-12-11 22:07:43,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:07:43,279 INFO L85 PathProgramCache]: Analyzing trace with hash 640763701, now seen corresponding path program 4 times [2022-12-11 22:07:43,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:07:43,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455544387] [2022-12-11 22:07:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:07:43,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:07:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:07:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-11 22:07:44,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:07:44,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455544387] [2022-12-11 22:07:44,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455544387] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:07:44,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169351458] [2022-12-11 22:07:44,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 22:07:44,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:07:44,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:07:44,114 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) [2022-12-11 22:07:44,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-11 22:07:44,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 22:07:44,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:07:44,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 86 conjunts are in the unsatisfiable core [2022-12-11 22:07:44,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:07:45,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 22:07:45,770 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-11 22:07:45,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 48 [2022-12-11 22:07:45,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2022-12-11 22:07:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 22:07:46,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:07:46,642 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:07:46,642 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 64 treesize of output 132 [2022-12-11 22:07:46,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-11 22:07:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 22:07:48,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169351458] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:07:48,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:07:48,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 31, 33] total 75 [2022-12-11 22:07:48,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005808938] [2022-12-11 22:07:48,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:07:48,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-12-11 22:07:48,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:07:48,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-12-11 22:07:48,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=5037, Unknown=0, NotChecked=0, Total=5550 [2022-12-11 22:07:48,503 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 245 [2022-12-11 22:07:48,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 12496 transitions, 320952 flow. Second operand has 75 states, 75 states have (on average 124.93333333333334) internal successors, (9370), 75 states have internal predecessors, (9370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:07:48,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:07:48,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 245 [2022-12-11 22:07:48,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-11 22:13:14,106 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 [2022-12-11 22:13:14,106 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 22:13:14,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2022-12-11 22:13:14,641 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-11 22:13:14,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-11 22:13:14,842 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,SelfDestructingSolverStorable16 [2022-12-11 22:13:14,842 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (75states, 121/245 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1087687 conditions, 121599 events (61999/121598 cut-off events. For 3032654/3198933 co-relation queries the response was YES. Maximal size of possible extension queue 6949. Compared 1459080 event pairs, 4041 based on Foata normal form. 4605/123977 useless extension candidates. Maximal degree in co-relation 463566. Up to 58915 conditions per place.). [2022-12-11 22:13:14,844 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-11 22:13:14,844 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-11 22:13:14,844 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-11 22:13:14,844 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 2, 2, 2, 1, 1] [2022-12-11 22:13:14,850 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 22:13:14,851 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 22:13:14,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 10:13:14 BasicIcfg [2022-12-11 22:13:14,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 22:13:14,856 INFO L158 Benchmark]: Toolchain (without parser) took 784910.77ms. Allocated memory was 188.7MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 148.2MB in the beginning and 3.7GB in the end (delta: -3.5GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2022-12-11 22:13:14,856 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 188.7MB. Free memory is still 165.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 22:13:14,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.87ms. Allocated memory is still 188.7MB. Free memory was 148.0MB in the beginning and 133.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-11 22:13:14,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.42ms. Allocated memory is still 188.7MB. Free memory was 133.8MB in the beginning and 131.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 22:13:14,857 INFO L158 Benchmark]: Boogie Preprocessor took 48.29ms. Allocated memory is still 188.7MB. Free memory was 131.2MB in the beginning and 129.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 22:13:14,861 INFO L158 Benchmark]: RCFGBuilder took 909.34ms. Allocated memory is still 188.7MB. Free memory was 129.2MB in the beginning and 87.2MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2022-12-11 22:13:14,862 INFO L158 Benchmark]: TraceAbstraction took 783618.62ms. Allocated memory was 188.7MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 86.2MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2022-12-11 22:13:14,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 188.7MB. Free memory is still 165.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 277.87ms. Allocated memory is still 188.7MB. Free memory was 148.0MB in the beginning and 133.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.42ms. Allocated memory is still 188.7MB. Free memory was 133.8MB in the beginning and 131.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.29ms. Allocated memory is still 188.7MB. Free memory was 131.2MB in the beginning and 129.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 909.34ms. Allocated memory is still 188.7MB. Free memory was 129.2MB in the beginning and 87.2MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 783618.62ms. Allocated memory was 188.7MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 86.2MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (75states, 121/245 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1087687 conditions, 121599 events (61999/121598 cut-off events. For 3032654/3198933 co-relation queries the response was YES. Maximal size of possible extension queue 6949. Compared 1459080 event pairs, 4041 based on Foata normal form. 4605/123977 useless extension candidates. Maximal degree in co-relation 463566. Up to 58915 conditions per place.). - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (75states, 121/245 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1087687 conditions, 121599 events (61999/121598 cut-off events. For 3032654/3198933 co-relation queries the response was YES. Maximal size of possible extension queue 6949. Compared 1459080 event pairs, 4041 based on Foata normal form. 4605/123977 useless extension candidates. Maximal degree in co-relation 463566. Up to 58915 conditions per place.). - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (75states, 121/245 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1087687 conditions, 121599 events (61999/121598 cut-off events. For 3032654/3198933 co-relation queries the response was YES. Maximal size of possible extension queue 6949. Compared 1459080 event pairs, 4041 based on Foata normal form. 4605/123977 useless extension candidates. Maximal degree in co-relation 463566. Up to 58915 conditions per place.). - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (75states, 121/245 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1087687 conditions, 121599 events (61999/121598 cut-off events. For 3032654/3198933 co-relation queries the response was YES. Maximal size of possible extension queue 6949. Compared 1459080 event pairs, 4041 based on Foata normal form. 4605/123977 useless extension candidates. Maximal degree in co-relation 463566. Up to 58915 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 261 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 3.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 783.5s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 742.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16935 SdHoareTripleChecker+Valid, 12.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16935 mSDsluCounter, 9654 SdHoareTripleChecker+Invalid, 10.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9031 mSDsCounter, 1312 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20233 IncrementalHoareTripleChecker+Invalid, 21545 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1312 mSolverCounterUnsat, 623 mSDtfsCounter, 20233 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4485 GetRequests, 3445 SyntacticMatches, 10 SemanticMatches, 1030 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62341 ImplicationChecksByTransitivity, 50.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320952occurred in iteration=16, InterpolantAutomatonStates: 499, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 18263 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 31.7s InterpolantComputationTime, 5362 NumberOfCodeBlocks, 5355 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 7054 ConstructedInterpolants, 107 QuantifiedInterpolants, 54816 SizeOfPredicates, 220 NumberOfNonLiveVariables, 4873 ConjunctsInSsa, 346 ConjunctsInUnsatCore, 34 InterpolantComputations, 9 PerfectInterpolantSequences, 213/395 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