/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 01:37:42,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 01:37:42,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 01:37:42,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 01:37:42,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 01:37:42,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 01:37:42,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 01:37:42,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 01:37:42,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 01:37:42,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 01:37:42,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 01:37:42,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 01:37:42,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 01:37:42,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 01:37:42,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 01:37:42,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 01:37:42,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 01:37:42,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 01:37:42,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 01:37:42,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 01:37:42,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 01:37:42,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 01:37:42,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 01:37:42,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 01:37:42,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 01:37:42,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 01:37:42,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 01:37:42,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 01:37:42,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 01:37:42,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 01:37:42,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 01:37:42,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 01:37:42,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 01:37:42,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 01:37:42,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 01:37:42,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 01:37:42,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 01:37:42,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 01:37:42,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 01:37:42,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 01:37:42,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 01:37:42,183 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 [2022-01-19 01:37:42,194 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 01:37:42,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 01:37:42,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 01:37:42,195 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 01:37:42,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 01:37:42,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 01:37:42,196 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 01:37:42,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 01:37:42,196 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 01:37:42,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 01:37:42,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 01:37:42,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 01:37:42,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 01:37:42,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 01:37:42,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 01:37:42,196 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 01:37:42,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 01:37:42,197 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 01:37:42,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 01:37:42,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 01:37:42,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 01:37:42,197 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 01:37:42,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 01:37:42,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 01:37:42,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 01:37:42,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 01:37:42,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 01:37:42,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 01:37:42,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 01:37:42,198 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 01:37:42,198 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 01:37:42,198 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 01:37:42,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 01:37:42,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 01:37:42,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 01:37:42,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 01:37:42,361 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 01:37:42,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2022-01-19 01:37:42,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30ad3431/03dfe5f05b824c23858e70110f2e2588/FLAGdc8a06a7f [2022-01-19 01:37:42,749 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 01:37:42,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2022-01-19 01:37:42,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30ad3431/03dfe5f05b824c23858e70110f2e2588/FLAGdc8a06a7f [2022-01-19 01:37:42,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30ad3431/03dfe5f05b824c23858e70110f2e2588 [2022-01-19 01:37:42,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 01:37:42,765 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 01:37:42,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 01:37:42,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 01:37:42,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 01:37:42,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:37:42" (1/1) ... [2022-01-19 01:37:42,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14898e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:42, skipping insertion in model container [2022-01-19 01:37:42,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:37:42" (1/1) ... [2022-01-19 01:37:42,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 01:37:42,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 01:37:42,976 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c[2947,2960] [2022-01-19 01:37:42,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 01:37:42,991 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 01:37:43,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c[2947,2960] [2022-01-19 01:37:43,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 01:37:43,029 INFO L208 MainTranslator]: Completed translation [2022-01-19 01:37:43,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:43 WrapperNode [2022-01-19 01:37:43,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 01:37:43,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 01:37:43,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 01:37:43,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 01:37:43,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:43" (1/1) ... [2022-01-19 01:37:43,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:43" (1/1) ... [2022-01-19 01:37:43,067 INFO L137 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 151 [2022-01-19 01:37:43,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 01:37:43,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 01:37:43,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 01:37:43,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 01:37:43,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:43" (1/1) ... [2022-01-19 01:37:43,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:43" (1/1) ... [2022-01-19 01:37:43,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:43" (1/1) ... [2022-01-19 01:37:43,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:43" (1/1) ... [2022-01-19 01:37:43,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:43" (1/1) ... [2022-01-19 01:37:43,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:43" (1/1) ... [2022-01-19 01:37:43,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:43" (1/1) ... [2022-01-19 01:37:43,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 01:37:43,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 01:37:43,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 01:37:43,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 01:37:43,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:43" (1/1) ... [2022-01-19 01:37:43,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 01:37:43,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:37:43,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 01:37:43,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 01:37:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 01:37:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 01:37:43,148 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 01:37:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 01:37:43,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 01:37:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 01:37:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 01:37:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 01:37:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 01:37:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 01:37:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 01:37:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 01:37:43,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 01:37:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 01:37:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 01:37:43,153 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 01:37:43,209 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 01:37:43,210 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 01:37:43,418 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 01:37:43,480 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 01:37:43,480 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 01:37:43,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:37:43 BoogieIcfgContainer [2022-01-19 01:37:43,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 01:37:43,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 01:37:43,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 01:37:43,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 01:37:43,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:37:42" (1/3) ... [2022-01-19 01:37:43,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a510899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:37:43, skipping insertion in model container [2022-01-19 01:37:43,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:37:43" (2/3) ... [2022-01-19 01:37:43,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a510899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:37:43, skipping insertion in model container [2022-01-19 01:37:43,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:37:43" (3/3) ... [2022-01-19 01:37:43,488 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2022-01-19 01:37:43,492 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 01:37:43,493 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 01:37:43,493 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 01:37:43,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,530 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,539 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,539 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,539 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:37:43,542 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 01:37:43,573 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 01:37:43,578 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 01:37:43,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 01:37:43,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 138 places, 142 transitions, 300 flow [2022-01-19 01:37:43,635 INFO L129 PetriNetUnfolder]: 11/140 cut-off events. [2022-01-19 01:37:43,635 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 01:37:43,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 140 events. 11/140 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 127 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2022-01-19 01:37:43,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 142 transitions, 300 flow [2022-01-19 01:37:43,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 131 transitions, 274 flow [2022-01-19 01:37:43,690 INFO L129 PetriNetUnfolder]: 11/130 cut-off events. [2022-01-19 01:37:43,691 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 01:37:43,691 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:37:43,691 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:37:43,692 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:37:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:37:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1559977782, now seen corresponding path program 1 times [2022-01-19 01:37:43,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:37:43,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645596877] [2022-01-19 01:37:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:43,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:37:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:37:43,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:37:43,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645596877] [2022-01-19 01:37:43,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645596877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:37:43,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:37:43,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 01:37:43,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974301703] [2022-01-19 01:37:43,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:37:43,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 01:37:43,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:37:43,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 01:37:43,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 01:37:43,894 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 142 [2022-01-19 01:37:43,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 131 transitions, 274 flow. Second operand has 2 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:43,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:37:43,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 142 [2022-01-19 01:37:43,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:37:43,960 INFO L129 PetriNetUnfolder]: 11/144 cut-off events. [2022-01-19 01:37:43,961 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-01-19 01:37:43,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 144 events. 11/144 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 201 event pairs, 4 based on Foata normal form. 18/152 useless extension candidates. Maximal degree in co-relation 95. Up to 21 conditions per place. [2022-01-19 01:37:43,962 INFO L132 encePairwiseOnDemand]: 135/142 looper letters, 9 selfloop transitions, 0 changer transitions 3/124 dead transitions. [2022-01-19 01:37:43,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 124 transitions, 278 flow [2022-01-19 01:37:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 01:37:43,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 01:37:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 266 transitions. [2022-01-19 01:37:43,976 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9366197183098591 [2022-01-19 01:37:43,976 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 266 transitions. [2022-01-19 01:37:43,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 266 transitions. [2022-01-19 01:37:43,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:37:43,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 266 transitions. [2022-01-19 01:37:43,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 133.0) internal successors, (266), 2 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:43,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:43,990 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:43,992 INFO L186 Difference]: Start difference. First operand has 127 places, 131 transitions, 274 flow. Second operand 2 states and 266 transitions. [2022-01-19 01:37:43,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 124 transitions, 278 flow [2022-01-19 01:37:43,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 124 transitions, 270 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 01:37:43,998 INFO L242 Difference]: Finished difference. Result has 124 places, 121 transitions, 246 flow [2022-01-19 01:37:43,999 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=246, PETRI_PLACES=124, PETRI_TRANSITIONS=121} [2022-01-19 01:37:44,002 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, -3 predicate places. [2022-01-19 01:37:44,002 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 121 transitions, 246 flow [2022-01-19 01:37:44,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,003 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:37:44,003 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:37:44,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 01:37:44,004 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:37:44,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:37:44,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1317567152, now seen corresponding path program 1 times [2022-01-19 01:37:44,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:37:44,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699378223] [2022-01-19 01:37:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:44,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:37:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:37:44,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:37:44,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699378223] [2022-01-19 01:37:44,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699378223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:37:44,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:37:44,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:37:44,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584766849] [2022-01-19 01:37:44,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:37:44,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:37:44,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:37:44,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:37:44,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:37:44,166 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 142 [2022-01-19 01:37:44,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 121 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:37:44,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 142 [2022-01-19 01:37:44,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:37:44,284 INFO L129 PetriNetUnfolder]: 27/291 cut-off events. [2022-01-19 01:37:44,284 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-01-19 01:37:44,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 291 events. 27/291 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1037 event pairs, 4 based on Foata normal form. 1/268 useless extension candidates. Maximal degree in co-relation 359. Up to 34 conditions per place. [2022-01-19 01:37:44,286 INFO L132 encePairwiseOnDemand]: 137/142 looper letters, 29 selfloop transitions, 2 changer transitions 4/133 dead transitions. [2022-01-19 01:37:44,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 133 transitions, 343 flow [2022-01-19 01:37:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:37:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:37:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 576 transitions. [2022-01-19 01:37:44,288 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8112676056338028 [2022-01-19 01:37:44,289 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 576 transitions. [2022-01-19 01:37:44,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 576 transitions. [2022-01-19 01:37:44,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:37:44,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 576 transitions. [2022-01-19 01:37:44,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,292 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,292 INFO L186 Difference]: Start difference. First operand has 124 places, 121 transitions, 246 flow. Second operand 5 states and 576 transitions. [2022-01-19 01:37:44,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 133 transitions, 343 flow [2022-01-19 01:37:44,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 133 transitions, 343 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 01:37:44,295 INFO L242 Difference]: Finished difference. Result has 128 places, 122 transitions, 262 flow [2022-01-19 01:37:44,295 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=128, PETRI_TRANSITIONS=122} [2022-01-19 01:37:44,296 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 1 predicate places. [2022-01-19 01:37:44,296 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 122 transitions, 262 flow [2022-01-19 01:37:44,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,297 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:37:44,297 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:37:44,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 01:37:44,297 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:37:44,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:37:44,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1193186558, now seen corresponding path program 1 times [2022-01-19 01:37:44,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:37:44,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364500253] [2022-01-19 01:37:44,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:44,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:37:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:37:44,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:37:44,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364500253] [2022-01-19 01:37:44,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364500253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:37:44,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:37:44,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 01:37:44,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358855063] [2022-01-19 01:37:44,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:37:44,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 01:37:44,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:37:44,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 01:37:44,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 01:37:44,387 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 142 [2022-01-19 01:37:44,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 122 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:37:44,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 142 [2022-01-19 01:37:44,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:37:44,493 INFO L129 PetriNetUnfolder]: 105/445 cut-off events. [2022-01-19 01:37:44,494 INFO L130 PetriNetUnfolder]: For 16/17 co-relation queries the response was YES. [2022-01-19 01:37:44,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 445 events. 105/445 cut-off events. For 16/17 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1678 event pairs, 46 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 659. Up to 163 conditions per place. [2022-01-19 01:37:44,498 INFO L132 encePairwiseOnDemand]: 137/142 looper letters, 27 selfloop transitions, 6 changer transitions 3/137 dead transitions. [2022-01-19 01:37:44,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 137 transitions, 367 flow [2022-01-19 01:37:44,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 01:37:44,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 01:37:44,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 489 transitions. [2022-01-19 01:37:44,500 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8609154929577465 [2022-01-19 01:37:44,500 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 489 transitions. [2022-01-19 01:37:44,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 489 transitions. [2022-01-19 01:37:44,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:37:44,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 489 transitions. [2022-01-19 01:37:44,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,505 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,505 INFO L186 Difference]: Start difference. First operand has 128 places, 122 transitions, 262 flow. Second operand 4 states and 489 transitions. [2022-01-19 01:37:44,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 137 transitions, 367 flow [2022-01-19 01:37:44,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 137 transitions, 361 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 01:37:44,510 INFO L242 Difference]: Finished difference. Result has 128 places, 127 transitions, 293 flow [2022-01-19 01:37:44,510 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=128, PETRI_TRANSITIONS=127} [2022-01-19 01:37:44,511 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 1 predicate places. [2022-01-19 01:37:44,512 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 127 transitions, 293 flow [2022-01-19 01:37:44,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,512 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:37:44,512 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:37:44,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 01:37:44,513 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:37:44,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:37:44,514 INFO L85 PathProgramCache]: Analyzing trace with hash -152225810, now seen corresponding path program 1 times [2022-01-19 01:37:44,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:37:44,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905508117] [2022-01-19 01:37:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:44,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:37:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:37:44,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:37:44,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905508117] [2022-01-19 01:37:44,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905508117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:37:44,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:37:44,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 01:37:44,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053818987] [2022-01-19 01:37:44,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:37:44,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:37:44,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:37:44,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:37:44,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 01:37:44,631 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 142 [2022-01-19 01:37:44,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 127 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:37:44,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 142 [2022-01-19 01:37:44,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:37:44,674 INFO L129 PetriNetUnfolder]: 30/232 cut-off events. [2022-01-19 01:37:44,674 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-01-19 01:37:44,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 232 events. 30/232 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 703 event pairs, 13 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 331. Up to 56 conditions per place. [2022-01-19 01:37:44,675 INFO L132 encePairwiseOnDemand]: 139/142 looper letters, 18 selfloop transitions, 2 changer transitions 1/131 dead transitions. [2022-01-19 01:37:44,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 131 transitions, 339 flow [2022-01-19 01:37:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:37:44,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:37:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-01-19 01:37:44,677 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9014084507042254 [2022-01-19 01:37:44,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-01-19 01:37:44,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-01-19 01:37:44,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:37:44,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-01-19 01:37:44,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,679 INFO L186 Difference]: Start difference. First operand has 128 places, 127 transitions, 293 flow. Second operand 3 states and 384 transitions. [2022-01-19 01:37:44,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 131 transitions, 339 flow [2022-01-19 01:37:44,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 131 transitions, 337 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-01-19 01:37:44,687 INFO L242 Difference]: Finished difference. Result has 131 places, 126 transitions, 293 flow [2022-01-19 01:37:44,688 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=131, PETRI_TRANSITIONS=126} [2022-01-19 01:37:44,689 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 4 predicate places. [2022-01-19 01:37:44,689 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 126 transitions, 293 flow [2022-01-19 01:37:44,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,689 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:37:44,690 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:37:44,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 01:37:44,690 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:37:44,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:37:44,691 INFO L85 PathProgramCache]: Analyzing trace with hash -873764727, now seen corresponding path program 1 times [2022-01-19 01:37:44,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:37:44,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953895954] [2022-01-19 01:37:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:44,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:37:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:37:44,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:37:44,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953895954] [2022-01-19 01:37:44,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953895954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:37:44,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:37:44,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:37:44,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9326441] [2022-01-19 01:37:44,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:37:44,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:37:44,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:37:44,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:37:44,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:37:44,826 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 142 [2022-01-19 01:37:44,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 126 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 116.8) internal successors, (584), 5 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:37:44,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 142 [2022-01-19 01:37:44,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:37:44,909 INFO L129 PetriNetUnfolder]: 122/513 cut-off events. [2022-01-19 01:37:44,909 INFO L130 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-01-19 01:37:44,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 513 events. 122/513 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2140 event pairs, 48 based on Foata normal form. 5/490 useless extension candidates. Maximal degree in co-relation 825. Up to 142 conditions per place. [2022-01-19 01:37:44,913 INFO L132 encePairwiseOnDemand]: 137/142 looper letters, 26 selfloop transitions, 3 changer transitions 9/140 dead transitions. [2022-01-19 01:37:44,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 140 transitions, 402 flow [2022-01-19 01:37:44,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:37:44,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:37:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 604 transitions. [2022-01-19 01:37:44,920 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8507042253521127 [2022-01-19 01:37:44,920 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 604 transitions. [2022-01-19 01:37:44,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 604 transitions. [2022-01-19 01:37:44,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:37:44,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 604 transitions. [2022-01-19 01:37:44,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,924 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,924 INFO L186 Difference]: Start difference. First operand has 131 places, 126 transitions, 293 flow. Second operand 5 states and 604 transitions. [2022-01-19 01:37:44,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 140 transitions, 402 flow [2022-01-19 01:37:44,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 140 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 01:37:44,927 INFO L242 Difference]: Finished difference. Result has 135 places, 124 transitions, 289 flow [2022-01-19 01:37:44,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=135, PETRI_TRANSITIONS=124} [2022-01-19 01:37:44,929 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 8 predicate places. [2022-01-19 01:37:44,929 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 124 transitions, 289 flow [2022-01-19 01:37:44,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.8) internal successors, (584), 5 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:44,930 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:37:44,930 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:37:44,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 01:37:44,931 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:37:44,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:37:44,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1497190495, now seen corresponding path program 2 times [2022-01-19 01:37:44,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:37:44,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747423187] [2022-01-19 01:37:44,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:44,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:37:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:37:45,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:37:45,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747423187] [2022-01-19 01:37:45,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747423187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:37:45,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:37:45,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 01:37:45,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756740723] [2022-01-19 01:37:45,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:37:45,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 01:37:45,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:37:45,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 01:37:45,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 01:37:45,069 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 142 [2022-01-19 01:37:45,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 124 transitions, 289 flow. Second operand has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:45,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:37:45,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 142 [2022-01-19 01:37:45,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:37:45,342 INFO L129 PetriNetUnfolder]: 169/645 cut-off events. [2022-01-19 01:37:45,342 INFO L130 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-01-19 01:37:45,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 645 events. 169/645 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2855 event pairs, 40 based on Foata normal form. 0/614 useless extension candidates. Maximal degree in co-relation 1096. Up to 117 conditions per place. [2022-01-19 01:37:45,346 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 47 selfloop transitions, 6 changer transitions 41/180 dead transitions. [2022-01-19 01:37:45,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 180 transitions, 614 flow [2022-01-19 01:37:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 01:37:45,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 01:37:45,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1257 transitions. [2022-01-19 01:37:45,349 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7376760563380281 [2022-01-19 01:37:45,349 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1257 transitions. [2022-01-19 01:37:45,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1257 transitions. [2022-01-19 01:37:45,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:37:45,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1257 transitions. [2022-01-19 01:37:45,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 104.75) internal successors, (1257), 12 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:45,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 142.0) internal successors, (1846), 13 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:45,356 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 142.0) internal successors, (1846), 13 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:45,356 INFO L186 Difference]: Start difference. First operand has 135 places, 124 transitions, 289 flow. Second operand 12 states and 1257 transitions. [2022-01-19 01:37:45,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 180 transitions, 614 flow [2022-01-19 01:37:45,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 180 transitions, 602 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-01-19 01:37:45,361 INFO L242 Difference]: Finished difference. Result has 146 places, 125 transitions, 313 flow [2022-01-19 01:37:45,361 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=313, PETRI_PLACES=146, PETRI_TRANSITIONS=125} [2022-01-19 01:37:45,363 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 19 predicate places. [2022-01-19 01:37:45,363 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 125 transitions, 313 flow [2022-01-19 01:37:45,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:45,364 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:37:45,364 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:37:45,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 01:37:45,364 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:37:45,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:37:45,365 INFO L85 PathProgramCache]: Analyzing trace with hash 756272725, now seen corresponding path program 1 times [2022-01-19 01:37:45,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:37:45,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795802715] [2022-01-19 01:37:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:45,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:37:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:37:45,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:37:45,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795802715] [2022-01-19 01:37:45,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795802715] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:37:45,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350552948] [2022-01-19 01:37:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:45,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:37:45,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:37:45,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:37:45,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 01:37:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:45,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-19 01:37:45,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:37:46,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 01:37:46,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 01:37:46,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 01:37:46,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-19 01:37:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:37:46,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:37:48,040 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 01:37:48,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 72 [2022-01-19 01:37:48,049 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 01:37:48,049 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 232 treesize of output 224 [2022-01-19 01:37:48,059 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 01:37:48,060 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 208 treesize of output 206 [2022-01-19 01:37:48,068 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 01:37:48,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 170 [2022-01-19 01:37:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:37:48,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350552948] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:37:48,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:37:48,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28, 25] total 52 [2022-01-19 01:37:48,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522185022] [2022-01-19 01:37:48,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:37:48,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-19 01:37:48,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:37:48,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-19 01:37:48,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=2150, Unknown=34, NotChecked=0, Total=2652 [2022-01-19 01:37:48,832 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 142 [2022-01-19 01:37:48,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 125 transitions, 313 flow. Second operand has 52 states, 52 states have (on average 59.26923076923077) internal successors, (3082), 52 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:48,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:37:48,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 142 [2022-01-19 01:37:48,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:37:51,412 INFO L129 PetriNetUnfolder]: 810/1870 cut-off events. [2022-01-19 01:37:51,412 INFO L130 PetriNetUnfolder]: For 373/373 co-relation queries the response was YES. [2022-01-19 01:37:51,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3886 conditions, 1870 events. 810/1870 cut-off events. For 373/373 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 10974 event pairs, 54 based on Foata normal form. 11/1824 useless extension candidates. Maximal degree in co-relation 3872. Up to 324 conditions per place. [2022-01-19 01:37:51,422 INFO L132 encePairwiseOnDemand]: 106/142 looper letters, 191 selfloop transitions, 81 changer transitions 8/331 dead transitions. [2022-01-19 01:37:51,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 331 transitions, 1431 flow [2022-01-19 01:37:51,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-19 01:37:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-01-19 01:37:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3141 transitions. [2022-01-19 01:37:51,431 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.43371996685998343 [2022-01-19 01:37:51,431 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3141 transitions. [2022-01-19 01:37:51,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3141 transitions. [2022-01-19 01:37:51,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:37:51,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3141 transitions. [2022-01-19 01:37:51,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 61.588235294117645) internal successors, (3141), 51 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:51,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 142.0) internal successors, (7384), 52 states have internal predecessors, (7384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:51,446 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 142.0) internal successors, (7384), 52 states have internal predecessors, (7384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:51,446 INFO L186 Difference]: Start difference. First operand has 146 places, 125 transitions, 313 flow. Second operand 51 states and 3141 transitions. [2022-01-19 01:37:51,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 331 transitions, 1431 flow [2022-01-19 01:37:51,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 331 transitions, 1347 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-01-19 01:37:51,454 INFO L242 Difference]: Finished difference. Result has 216 places, 197 transitions, 897 flow [2022-01-19 01:37:51,455 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=897, PETRI_PLACES=216, PETRI_TRANSITIONS=197} [2022-01-19 01:37:51,455 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 89 predicate places. [2022-01-19 01:37:51,455 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 197 transitions, 897 flow [2022-01-19 01:37:51,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 59.26923076923077) internal successors, (3082), 52 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:51,456 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:37:51,456 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2022-01-19 01:37:51,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 01:37:51,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:37:51,663 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:37:51,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:37:51,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1655218113, now seen corresponding path program 2 times [2022-01-19 01:37:51,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:37:51,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850441891] [2022-01-19 01:37:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:51,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:37:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:37:51,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:37:51,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850441891] [2022-01-19 01:37:51,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850441891] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:37:51,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502288531] [2022-01-19 01:37:51,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 01:37:51,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:37:51,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:37:51,720 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) [2022-01-19 01:37:51,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 01:37:51,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 01:37:51,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:37:51,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 01:37:51,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:37:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:37:51,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:37:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:37:52,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502288531] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:37:52,220 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:37:52,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 9 [2022-01-19 01:37:52,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970373889] [2022-01-19 01:37:52,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:37:52,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 01:37:52,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:37:52,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 01:37:52,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-19 01:37:52,222 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 142 [2022-01-19 01:37:52,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 197 transitions, 897 flow. Second operand has 9 states, 9 states have (on average 115.66666666666667) internal successors, (1041), 9 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:52,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:37:52,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 142 [2022-01-19 01:37:52,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:37:52,587 INFO L129 PetriNetUnfolder]: 615/1911 cut-off events. [2022-01-19 01:37:52,587 INFO L130 PetriNetUnfolder]: For 9808/9826 co-relation queries the response was YES. [2022-01-19 01:37:52,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6538 conditions, 1911 events. 615/1911 cut-off events. For 9808/9826 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11673 event pairs, 39 based on Foata normal form. 12/1839 useless extension candidates. Maximal degree in co-relation 6495. Up to 394 conditions per place. [2022-01-19 01:37:52,604 INFO L132 encePairwiseOnDemand]: 133/142 looper letters, 146 selfloop transitions, 85 changer transitions 19/375 dead transitions. [2022-01-19 01:37:52,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 375 transitions, 2687 flow [2022-01-19 01:37:52,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 01:37:52,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 01:37:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1435 transitions. [2022-01-19 01:37:52,606 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8421361502347418 [2022-01-19 01:37:52,606 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1435 transitions. [2022-01-19 01:37:52,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1435 transitions. [2022-01-19 01:37:52,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:37:52,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1435 transitions. [2022-01-19 01:37:52,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 119.58333333333333) internal successors, (1435), 12 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:52,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 142.0) internal successors, (1846), 13 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:52,612 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 142.0) internal successors, (1846), 13 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:52,612 INFO L186 Difference]: Start difference. First operand has 216 places, 197 transitions, 897 flow. Second operand 12 states and 1435 transitions. [2022-01-19 01:37:52,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 375 transitions, 2687 flow [2022-01-19 01:37:52,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 375 transitions, 2582 flow, removed 33 selfloop flow, removed 16 redundant places. [2022-01-19 01:37:52,628 INFO L242 Difference]: Finished difference. Result has 215 places, 285 transitions, 1785 flow [2022-01-19 01:37:52,628 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1785, PETRI_PLACES=215, PETRI_TRANSITIONS=285} [2022-01-19 01:37:52,630 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 88 predicate places. [2022-01-19 01:37:52,630 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 285 transitions, 1785 flow [2022-01-19 01:37:52,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.66666666666667) internal successors, (1041), 9 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:52,630 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:37:52,631 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2022-01-19 01:37:52,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 01:37:52,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-01-19 01:37:52,847 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:37:52,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:37:52,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1666240596, now seen corresponding path program 3 times [2022-01-19 01:37:52,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:37:52,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942219875] [2022-01-19 01:37:52,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:52,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:37:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-19 01:37:52,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:37:52,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942219875] [2022-01-19 01:37:52,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942219875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:37:52,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:37:52,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 01:37:52,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657329976] [2022-01-19 01:37:52,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:37:52,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 01:37:52,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:37:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 01:37:52,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 01:37:52,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 142 [2022-01-19 01:37:52,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 285 transitions, 1785 flow. Second operand has 4 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:52,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:37:52,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 142 [2022-01-19 01:37:52,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:37:53,157 INFO L129 PetriNetUnfolder]: 363/1679 cut-off events. [2022-01-19 01:37:53,157 INFO L130 PetriNetUnfolder]: For 9000/9208 co-relation queries the response was YES. [2022-01-19 01:37:53,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5484 conditions, 1679 events. 363/1679 cut-off events. For 9000/9208 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11025 event pairs, 92 based on Foata normal form. 147/1713 useless extension candidates. Maximal degree in co-relation 5437. Up to 362 conditions per place. [2022-01-19 01:37:53,168 INFO L132 encePairwiseOnDemand]: 138/142 looper letters, 116 selfloop transitions, 4 changer transitions 0/275 dead transitions. [2022-01-19 01:37:53,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 275 transitions, 1910 flow [2022-01-19 01:37:53,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 01:37:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 01:37:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2022-01-19 01:37:53,169 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8855633802816901 [2022-01-19 01:37:53,169 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 503 transitions. [2022-01-19 01:37:53,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 503 transitions. [2022-01-19 01:37:53,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:37:53,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 503 transitions. [2022-01-19 01:37:53,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:53,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:53,171 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:53,171 INFO L186 Difference]: Start difference. First operand has 215 places, 285 transitions, 1785 flow. Second operand 4 states and 503 transitions. [2022-01-19 01:37:53,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 275 transitions, 1910 flow [2022-01-19 01:37:53,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 275 transitions, 1818 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-01-19 01:37:53,186 INFO L242 Difference]: Finished difference. Result has 218 places, 265 transitions, 1533 flow [2022-01-19 01:37:53,186 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1533, PETRI_PLACES=218, PETRI_TRANSITIONS=265} [2022-01-19 01:37:53,187 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 91 predicate places. [2022-01-19 01:37:53,187 INFO L470 AbstractCegarLoop]: Abstraction has has 218 places, 265 transitions, 1533 flow [2022-01-19 01:37:53,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:53,187 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:37:53,187 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-01-19 01:37:53,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 01:37:53,188 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:37:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:37:53,188 INFO L85 PathProgramCache]: Analyzing trace with hash 207056101, now seen corresponding path program 1 times [2022-01-19 01:37:53,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:37:53,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059726784] [2022-01-19 01:37:53,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:53,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:37:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 01:37:53,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:37:53,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059726784] [2022-01-19 01:37:53,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059726784] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:37:53,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688620517] [2022-01-19 01:37:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:53,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:37:53,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:37:53,268 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) [2022-01-19 01:37:53,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 01:37:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:53,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-19 01:37:53,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:37:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:37:53,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:37:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 01:37:54,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688620517] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:37:54,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:37:54,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 15] total 35 [2022-01-19 01:37:54,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655193041] [2022-01-19 01:37:54,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:37:54,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-19 01:37:54,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:37:54,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-19 01:37:54,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2022-01-19 01:37:54,540 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 142 [2022-01-19 01:37:54,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 265 transitions, 1533 flow. Second operand has 35 states, 35 states have (on average 98.05714285714286) internal successors, (3432), 35 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:54,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:37:54,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 142 [2022-01-19 01:37:54,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:37:55,295 INFO L129 PetriNetUnfolder]: 447/1756 cut-off events. [2022-01-19 01:37:55,296 INFO L130 PetriNetUnfolder]: For 8582/8596 co-relation queries the response was YES. [2022-01-19 01:37:55,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6296 conditions, 1756 events. 447/1756 cut-off events. For 8582/8596 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10383 event pairs, 240 based on Foata normal form. 23/1702 useless extension candidates. Maximal degree in co-relation 6247. Up to 860 conditions per place. [2022-01-19 01:37:55,307 INFO L132 encePairwiseOnDemand]: 123/142 looper letters, 101 selfloop transitions, 14 changer transitions 27/236 dead transitions. [2022-01-19 01:37:55,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 236 transitions, 1519 flow [2022-01-19 01:37:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 01:37:55,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 01:37:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2166 transitions. [2022-01-19 01:37:55,312 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6933418693982074 [2022-01-19 01:37:55,312 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2166 transitions. [2022-01-19 01:37:55,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2166 transitions. [2022-01-19 01:37:55,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:37:55,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2166 transitions. [2022-01-19 01:37:55,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 98.45454545454545) internal successors, (2166), 22 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:55,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 142.0) internal successors, (3266), 23 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:55,320 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 142.0) internal successors, (3266), 23 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:55,320 INFO L186 Difference]: Start difference. First operand has 218 places, 265 transitions, 1533 flow. Second operand 22 states and 2166 transitions. [2022-01-19 01:37:55,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 236 transitions, 1519 flow [2022-01-19 01:37:55,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 236 transitions, 1468 flow, removed 25 selfloop flow, removed 3 redundant places. [2022-01-19 01:37:55,333 INFO L242 Difference]: Finished difference. Result has 233 places, 204 transitions, 1068 flow [2022-01-19 01:37:55,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1068, PETRI_PLACES=233, PETRI_TRANSITIONS=204} [2022-01-19 01:37:55,335 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 106 predicate places. [2022-01-19 01:37:55,335 INFO L470 AbstractCegarLoop]: Abstraction has has 233 places, 204 transitions, 1068 flow [2022-01-19 01:37:55,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 98.05714285714286) internal successors, (3432), 35 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:37:55,336 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:37:55,336 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-19 01:37:55,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 01:37:55,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:37:55,557 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:37:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:37:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1887549627, now seen corresponding path program 2 times [2022-01-19 01:37:55,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:37:55,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074480435] [2022-01-19 01:37:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:37:55,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:37:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:37:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:37:56,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:37:56,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074480435] [2022-01-19 01:37:56,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074480435] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:37:56,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115904409] [2022-01-19 01:37:56,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 01:37:56,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:37:56,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:37:56,957 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) [2022-01-19 01:37:56,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 01:37:57,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 01:37:57,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:37:57,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-19 01:37:57,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:37:57,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 01:37:58,185 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 01:37:58,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 01:37:59,432 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 01:37:59,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 15 [2022-01-19 01:37:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:37:59,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:38:02,031 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 01:38:02,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 125 [2022-01-19 01:38:02,068 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 01:38:02,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 808 treesize of output 758 [2022-01-19 01:38:02,103 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 01:38:02,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 706 treesize of output 602 [2022-01-19 01:38:02,142 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 01:38:02,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 550 treesize of output 524 [2022-01-19 01:38:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:38:05,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115904409] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:38:05,164 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:38:05,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 36] total 103 [2022-01-19 01:38:05,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112663391] [2022-01-19 01:38:05,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:38:05,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-19 01:38:05,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:38:05,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-19 01:38:05,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1203, Invalid=9253, Unknown=50, NotChecked=0, Total=10506 [2022-01-19 01:38:05,170 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 142 [2022-01-19 01:38:05,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 204 transitions, 1068 flow. Second operand has 103 states, 103 states have (on average 54.271844660194176) internal successors, (5590), 103 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:38:05,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:38:05,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 142 [2022-01-19 01:38:05,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:38:43,138 INFO L129 PetriNetUnfolder]: 6652/15630 cut-off events. [2022-01-19 01:38:43,138 INFO L130 PetriNetUnfolder]: For 107435/107487 co-relation queries the response was YES. [2022-01-19 01:38:43,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63709 conditions, 15630 events. 6652/15630 cut-off events. For 107435/107487 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 146425 event pairs, 279 based on Foata normal form. 20/15135 useless extension candidates. Maximal degree in co-relation 63657. Up to 2128 conditions per place. [2022-01-19 01:38:43,274 INFO L132 encePairwiseOnDemand]: 99/142 looper letters, 1040 selfloop transitions, 813 changer transitions 95/1999 dead transitions. [2022-01-19 01:38:43,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 1999 transitions, 19641 flow [2022-01-19 01:38:43,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 312 states. [2022-01-19 01:38:43,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2022-01-19 01:38:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 17836 transitions. [2022-01-19 01:38:43,300 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4025821596244131 [2022-01-19 01:38:43,300 INFO L72 ComplementDD]: Start complementDD. Operand 312 states and 17836 transitions. [2022-01-19 01:38:43,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 312 states and 17836 transitions. [2022-01-19 01:38:43,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:38:43,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 312 states and 17836 transitions. [2022-01-19 01:38:43,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 313 states, 312 states have (on average 57.166666666666664) internal successors, (17836), 312 states have internal predecessors, (17836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:38:43,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 313 states, 313 states have (on average 142.0) internal successors, (44446), 313 states have internal predecessors, (44446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:38:43,394 INFO L81 ComplementDD]: Finished complementDD. Result has 313 states, 313 states have (on average 142.0) internal successors, (44446), 313 states have internal predecessors, (44446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:38:43,395 INFO L186 Difference]: Start difference. First operand has 233 places, 204 transitions, 1068 flow. Second operand 312 states and 17836 transitions. [2022-01-19 01:38:43,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 1999 transitions, 19641 flow [2022-01-19 01:38:43,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 1999 transitions, 18408 flow, removed 607 selfloop flow, removed 19 redundant places. [2022-01-19 01:38:43,501 INFO L242 Difference]: Finished difference. Result has 651 places, 1149 transitions, 12938 flow [2022-01-19 01:38:43,501 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=312, PETRI_FLOW=12938, PETRI_PLACES=651, PETRI_TRANSITIONS=1149} [2022-01-19 01:38:43,502 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 524 predicate places. [2022-01-19 01:38:43,502 INFO L470 AbstractCegarLoop]: Abstraction has has 651 places, 1149 transitions, 12938 flow [2022-01-19 01:38:43,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 54.271844660194176) internal successors, (5590), 103 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:38:43,504 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:38:43,504 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-19 01:38:43,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 01:38:43,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:38:43,719 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:38:43,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:38:43,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1593357063, now seen corresponding path program 3 times [2022-01-19 01:38:43,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:38:43,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150984849] [2022-01-19 01:38:43,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:38:43,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:38:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:38:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:38:45,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:38:45,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150984849] [2022-01-19 01:38:45,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150984849] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:38:45,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121507651] [2022-01-19 01:38:45,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 01:38:45,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:38:45,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:38:45,059 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) [2022-01-19 01:38:45,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 01:38:45,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-19 01:38:45,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:38:45,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 90 conjunts are in the unsatisfiable core [2022-01-19 01:38:45,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:38:45,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 01:38:46,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 01:38:46,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 01:38:48,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 01:38:48,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 01:38:48,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-19 01:38:48,210 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 01:38:48,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 45 treesize of output 22 [2022-01-19 01:38:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:38:48,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:38:57,958 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 01:38:57,959 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 122 [2022-01-19 01:38:57,995 INFO L353 Elim1Store]: treesize reduction 73, result has 24.7 percent of original size [2022-01-19 01:38:57,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 784 treesize of output 711 [2022-01-19 01:38:58,034 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-01-19 01:38:58,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 688 treesize of output 632 [2022-01-19 01:38:58,068 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-01-19 01:38:58,069 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 616 treesize of output 488 [2022-01-19 01:38:58,084 INFO L884 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 01:38:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:38:59,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121507651] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:38:59,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:38:59,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 46, 43] total 114 [2022-01-19 01:38:59,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061587253] [2022-01-19 01:38:59,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:38:59,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-19 01:38:59,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:38:59,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-19 01:38:59,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1632, Invalid=11210, Unknown=40, NotChecked=0, Total=12882 [2022-01-19 01:38:59,957 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 142 [2022-01-19 01:38:59,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 1149 transitions, 12938 flow. Second operand has 114 states, 114 states have (on average 55.18421052631579) internal successors, (6291), 114 states have internal predecessors, (6291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:38:59,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:38:59,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 142 [2022-01-19 01:38:59,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:42:03,916 INFO L129 PetriNetUnfolder]: 45901/112574 cut-off events. [2022-01-19 01:42:03,916 INFO L130 PetriNetUnfolder]: For 13346961/13350549 co-relation queries the response was YES. [2022-01-19 01:42:08,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 964813 conditions, 112574 events. 45901/112574 cut-off events. For 13346961/13350549 co-relation queries the response was YES. Maximal size of possible extension queue 2739. Compared 1422140 event pairs, 1880 based on Foata normal form. 1043/108376 useless extension candidates. Maximal degree in co-relation 964622. Up to 13899 conditions per place. [2022-01-19 01:42:09,025 INFO L132 encePairwiseOnDemand]: 95/142 looper letters, 5817 selfloop transitions, 7916 changer transitions 894/14676 dead transitions. [2022-01-19 01:42:09,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1444 places, 14676 transitions, 243005 flow [2022-01-19 01:42:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 801 states. [2022-01-19 01:42:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2022-01-19 01:42:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 46898 transitions. [2022-01-19 01:42:09,174 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4123191081570572 [2022-01-19 01:42:09,175 INFO L72 ComplementDD]: Start complementDD. Operand 801 states and 46898 transitions. [2022-01-19 01:42:09,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 801 states and 46898 transitions. [2022-01-19 01:42:09,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:42:09,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 801 states and 46898 transitions. [2022-01-19 01:42:09,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 802 states, 801 states have (on average 58.54931335830212) internal successors, (46898), 801 states have internal predecessors, (46898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:42:09,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 802 states, 802 states have (on average 142.0) internal successors, (113884), 802 states have internal predecessors, (113884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:42:09,408 INFO L81 ComplementDD]: Finished complementDD. Result has 802 states, 802 states have (on average 142.0) internal successors, (113884), 802 states have internal predecessors, (113884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:42:09,408 INFO L186 Difference]: Start difference. First operand has 651 places, 1149 transitions, 12938 flow. Second operand 801 states and 46898 transitions. [2022-01-19 01:42:09,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1444 places, 14676 transitions, 243005 flow [2022-01-19 01:42:53,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1411 places, 14676 transitions, 191853 flow, removed 22981 selfloop flow, removed 33 redundant places. [2022-01-19 01:42:53,243 INFO L242 Difference]: Finished difference. Result has 1999 places, 9991 transitions, 127734 flow [2022-01-19 01:42:53,244 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=7913, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=591, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=801, PETRI_FLOW=127734, PETRI_PLACES=1999, PETRI_TRANSITIONS=9991} [2022-01-19 01:42:53,245 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 1872 predicate places. [2022-01-19 01:42:53,245 INFO L470 AbstractCegarLoop]: Abstraction has has 1999 places, 9991 transitions, 127734 flow [2022-01-19 01:42:53,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 55.18421052631579) internal successors, (6291), 114 states have internal predecessors, (6291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:42:53,246 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:42:53,246 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-19 01:42:53,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 01:42:53,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-19 01:42:53,462 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:42:53,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:42:53,462 INFO L85 PathProgramCache]: Analyzing trace with hash -522964649, now seen corresponding path program 4 times [2022-01-19 01:42:53,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:42:53,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902193911] [2022-01-19 01:42:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:42:53,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:42:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:42:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:42:54,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:42:54,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902193911] [2022-01-19 01:42:54,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902193911] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:42:54,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247911059] [2022-01-19 01:42:54,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 01:42:54,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:42:54,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:42:54,694 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) [2022-01-19 01:42:54,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 01:42:54,762 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 01:42:54,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:42:54,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 63 conjunts are in the unsatisfiable core [2022-01-19 01:42:54,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:42:56,295 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 01:42:56,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 15 [2022-01-19 01:42:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:42:56,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:42:57,382 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 01:42:57,383 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 77 treesize of output 78 [2022-01-19 01:42:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:42:58,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247911059] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:42:58,529 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:42:58,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 30, 30] total 89 [2022-01-19 01:42:58,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474296572] [2022-01-19 01:42:58,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:42:58,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-19 01:42:58,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:42:58,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-19 01:42:58,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=834, Invalid=6998, Unknown=0, NotChecked=0, Total=7832 [2022-01-19 01:42:58,534 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 142 [2022-01-19 01:42:58,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1999 places, 9991 transitions, 127734 flow. Second operand has 89 states, 89 states have (on average 54.71910112359551) internal successors, (4870), 89 states have internal predecessors, (4870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:42:58,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:42:58,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 142 [2022-01-19 01:42:58,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand