/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-send-receive-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 02:36:54,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 02:36:54,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 02:36:54,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 02:36:54,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 02:36:54,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 02:36:54,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 02:36:54,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 02:36:54,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 02:36:54,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 02:36:54,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 02:36:54,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 02:36:54,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 02:36:54,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 02:36:54,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 02:36:54,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 02:36:54,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 02:36:54,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 02:36:54,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 02:36:54,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 02:36:54,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 02:36:54,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 02:36:54,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 02:36:54,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 02:36:54,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 02:36:54,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 02:36:54,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 02:36:54,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 02:36:54,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 02:36:54,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 02:36:54,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 02:36:54,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 02:36:54,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 02:36:54,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 02:36:54,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 02:36:54,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 02:36:54,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 02:36:54,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 02:36:54,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 02:36:54,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 02:36:54,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 02:36:54,567 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 02:36:54,591 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 02:36:54,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 02:36:54,592 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 02:36:54,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 02:36:54,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 02:36:54,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 02:36:54,593 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 02:36:54,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 02:36:54,593 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 02:36:54,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 02:36:54,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 02:36:54,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 02:36:54,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 02:36:54,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 02:36:54,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 02:36:54,594 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 02:36:54,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 02:36:54,594 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 02:36:54,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 02:36:54,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 02:36:54,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 02:36:54,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 02:36:54,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 02:36:54,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:36:54,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 02:36:54,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 02:36:54,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 02:36:54,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 02:36:54,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 02:36:54,596 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 02:36:54,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 02:36:54,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 02:36:54,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 02:36:54,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 02:36:54,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 02:36:54,793 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 02:36:54,794 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 02:36:54,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-01-19 02:36:54,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b8ea293/d4a8d9f457e94bd9ba645c457aa5952e/FLAGfb41dba0d [2022-01-19 02:36:55,147 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 02:36:55,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-01-19 02:36:55,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b8ea293/d4a8d9f457e94bd9ba645c457aa5952e/FLAGfb41dba0d [2022-01-19 02:36:55,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b8ea293/d4a8d9f457e94bd9ba645c457aa5952e [2022-01-19 02:36:55,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 02:36:55,573 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 02:36:55,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 02:36:55,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 02:36:55,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 02:36:55,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:36:55" (1/1) ... [2022-01-19 02:36:55,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb913e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55, skipping insertion in model container [2022-01-19 02:36:55,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:36:55" (1/1) ... [2022-01-19 02:36:55,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 02:36:55,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 02:36:55,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2022-01-19 02:36:55,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:36:55,747 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 02:36:55,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2022-01-19 02:36:55,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:36:55,770 INFO L208 MainTranslator]: Completed translation [2022-01-19 02:36:55,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55 WrapperNode [2022-01-19 02:36:55,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 02:36:55,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 02:36:55,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 02:36:55,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 02:36:55,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55" (1/1) ... [2022-01-19 02:36:55,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55" (1/1) ... [2022-01-19 02:36:55,797 INFO L137 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 142 [2022-01-19 02:36:55,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 02:36:55,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 02:36:55,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 02:36:55,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 02:36:55,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55" (1/1) ... [2022-01-19 02:36:55,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55" (1/1) ... [2022-01-19 02:36:55,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55" (1/1) ... [2022-01-19 02:36:55,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55" (1/1) ... [2022-01-19 02:36:55,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55" (1/1) ... [2022-01-19 02:36:55,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55" (1/1) ... [2022-01-19 02:36:55,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55" (1/1) ... [2022-01-19 02:36:55,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 02:36:55,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 02:36:55,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 02:36:55,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 02:36:55,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55" (1/1) ... [2022-01-19 02:36:55,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:36:55,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:36:55,840 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 02:36:55,844 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 02:36:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 02:36:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 02:36:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 02:36:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 02:36:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 02:36:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 02:36:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 02:36:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 02:36:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 02:36:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 02:36:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 02:36:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 02:36:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 02:36:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 02:36:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 02:36:55,866 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 02:36:55,942 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 02:36:55,943 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 02:36:56,148 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 02:36:56,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 02:36:56,221 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 02:36:56,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:36:56 BoogieIcfgContainer [2022-01-19 02:36:56,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 02:36:56,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 02:36:56,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 02:36:56,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 02:36:56,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:36:55" (1/3) ... [2022-01-19 02:36:56,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b79d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:36:56, skipping insertion in model container [2022-01-19 02:36:56,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:36:55" (2/3) ... [2022-01-19 02:36:56,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b79d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:36:56, skipping insertion in model container [2022-01-19 02:36:56,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:36:56" (3/3) ... [2022-01-19 02:36:56,233 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2022-01-19 02:36:56,237 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 02:36:56,237 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 02:36:56,237 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 02:36:56,284 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,284 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,284 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,285 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,285 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,285 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,285 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,286 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,286 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,286 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,286 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,286 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,286 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,287 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,287 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,288 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,288 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,288 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,288 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,288 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,290 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,290 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,290 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,291 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,291 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,291 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,292 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,292 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,292 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,292 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,292 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,292 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,294 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,294 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,294 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,294 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,294 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,294 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,294 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,294 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,295 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,296 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,296 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,296 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,296 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,296 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,296 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,297 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,297 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,297 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,297 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,297 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,297 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,298 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,298 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,298 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,298 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,298 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,299 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,299 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,299 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,299 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,299 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,302 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,303 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,303 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,303 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,303 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,303 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,303 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,303 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,304 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,304 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,306 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:36:56,311 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 02:36:56,347 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 02:36:56,353 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 02:36:56,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 02:36:56,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 129 places, 133 transitions, 282 flow [2022-01-19 02:36:56,428 INFO L129 PetriNetUnfolder]: 11/131 cut-off events. [2022-01-19 02:36:56,430 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 02:36:56,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 131 events. 11/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2022-01-19 02:36:56,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 133 transitions, 282 flow [2022-01-19 02:36:56,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 122 transitions, 256 flow [2022-01-19 02:36:56,465 INFO L129 PetriNetUnfolder]: 11/121 cut-off events. [2022-01-19 02:36:56,466 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 02:36:56,466 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:36:56,466 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] [2022-01-19 02:36:56,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:36:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:36:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1382683983, now seen corresponding path program 1 times [2022-01-19 02:36:56,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:36:56,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507868001] [2022-01-19 02:36:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:36:56,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:36:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:36:56,640 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 02:36:56,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:36:56,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507868001] [2022-01-19 02:36:56,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507868001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:36:56,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:36:56,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 02:36:56,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015530764] [2022-01-19 02:36:56,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:36:56,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 02:36:56,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:36:56,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 02:36:56,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 02:36:56,676 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 133 [2022-01-19 02:36:56,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 122 transitions, 256 flow. Second operand has 2 states, 2 states have (on average 121.5) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 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 02:36:56,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:36:56,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 133 [2022-01-19 02:36:56,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:36:56,730 INFO L129 PetriNetUnfolder]: 8/122 cut-off events. [2022-01-19 02:36:56,730 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-01-19 02:36:56,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 122 events. 8/122 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 1 based on Foata normal form. 10/122 useless extension candidates. Maximal degree in co-relation 83. Up to 13 conditions per place. [2022-01-19 02:36:56,732 INFO L132 encePairwiseOnDemand]: 126/133 looper letters, 7 selfloop transitions, 0 changer transitions 3/115 dead transitions. [2022-01-19 02:36:56,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 115 transitions, 256 flow [2022-01-19 02:36:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 02:36:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 02:36:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2022-01-19 02:36:56,744 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9398496240601504 [2022-01-19 02:36:56,744 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2022-01-19 02:36:56,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2022-01-19 02:36:56,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:36:56,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2022-01-19 02:36:56,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 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 02:36:56,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 02:36:56,754 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 02:36:56,755 INFO L186 Difference]: Start difference. First operand has 118 places, 122 transitions, 256 flow. Second operand 2 states and 250 transitions. [2022-01-19 02:36:56,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 115 transitions, 256 flow [2022-01-19 02:36:56,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 115 transitions, 248 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 02:36:56,765 INFO L242 Difference]: Finished difference. Result has 115 places, 112 transitions, 228 flow [2022-01-19 02:36:56,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=228, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2022-01-19 02:36:56,769 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2022-01-19 02:36:56,769 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 228 flow [2022-01-19 02:36:56,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 121.5) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 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 02:36:56,769 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:36:56,769 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 02:36:56,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 02:36:56,770 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:36:56,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:36:56,770 INFO L85 PathProgramCache]: Analyzing trace with hash 882365775, now seen corresponding path program 1 times [2022-01-19 02:36:56,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:36:56,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675184591] [2022-01-19 02:36:56,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:36:56,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:36:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:36:56,914 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 02:36:56,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:36:56,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675184591] [2022-01-19 02:36:56,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675184591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:36:56,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:36:56,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 02:36:56,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975087498] [2022-01-19 02:36:56,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:36:56,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 02:36:56,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:36:56,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 02:36:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 02:36:56,921 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 133 [2022-01-19 02:36:56,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 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 02:36:56,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:36:56,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 133 [2022-01-19 02:36:56,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:36:56,985 INFO L129 PetriNetUnfolder]: 13/157 cut-off events. [2022-01-19 02:36:56,985 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-01-19 02:36:56,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 157 events. 13/157 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 261 event pairs, 1 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 199. Up to 19 conditions per place. [2022-01-19 02:36:56,986 INFO L132 encePairwiseOnDemand]: 128/133 looper letters, 23 selfloop transitions, 2 changer transitions 4/121 dead transitions. [2022-01-19 02:36:56,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 121 transitions, 307 flow [2022-01-19 02:36:56,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 02:36:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 02:36:56,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 540 transitions. [2022-01-19 02:36:56,995 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8120300751879699 [2022-01-19 02:36:56,995 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 540 transitions. [2022-01-19 02:36:56,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 540 transitions. [2022-01-19 02:36:56,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:36:56,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 540 transitions. [2022-01-19 02:36:56,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 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 02:36:57,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 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 02:36:57,001 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 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 02:36:57,001 INFO L186 Difference]: Start difference. First operand has 115 places, 112 transitions, 228 flow. Second operand 5 states and 540 transitions. [2022-01-19 02:36:57,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 121 transitions, 307 flow [2022-01-19 02:36:57,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 121 transitions, 307 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 02:36:57,005 INFO L242 Difference]: Finished difference. Result has 119 places, 113 transitions, 244 flow [2022-01-19 02:36:57,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=119, PETRI_TRANSITIONS=113} [2022-01-19 02:36:57,006 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2022-01-19 02:36:57,007 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 113 transitions, 244 flow [2022-01-19 02:36:57,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 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 02:36:57,007 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:36:57,007 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] [2022-01-19 02:36:57,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 02:36:57,008 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:36:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:36:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1024793816, now seen corresponding path program 1 times [2022-01-19 02:36:57,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:36:57,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997757464] [2022-01-19 02:36:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:36:57,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:36:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:36:57,134 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 02:36:57,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:36:57,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997757464] [2022-01-19 02:36:57,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997757464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:36:57,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:36:57,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 02:36:57,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319345055] [2022-01-19 02:36:57,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:36:57,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 02:36:57,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:36:57,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 02:36:57,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 02:36:57,137 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2022-01-19 02:36:57,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 113 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 02:36:57,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:36:57,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2022-01-19 02:36:57,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:36:57,184 INFO L129 PetriNetUnfolder]: 18/188 cut-off events. [2022-01-19 02:36:57,184 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-01-19 02:36:57,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 188 events. 18/188 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 350 event pairs, 3 based on Foata normal form. 3/175 useless extension candidates. Maximal degree in co-relation 240. Up to 30 conditions per place. [2022-01-19 02:36:57,186 INFO L132 encePairwiseOnDemand]: 127/133 looper letters, 14 selfloop transitions, 5 changer transitions 2/118 dead transitions. [2022-01-19 02:36:57,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 118 transitions, 298 flow [2022-01-19 02:36:57,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 02:36:57,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 02:36:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2022-01-19 02:36:57,188 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8796992481203008 [2022-01-19 02:36:57,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2022-01-19 02:36:57,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2022-01-19 02:36:57,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:36:57,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2022-01-19 02:36:57,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 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 02:36:57,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 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 02:36:57,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 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 02:36:57,190 INFO L186 Difference]: Start difference. First operand has 119 places, 113 transitions, 244 flow. Second operand 3 states and 351 transitions. [2022-01-19 02:36:57,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 118 transitions, 298 flow [2022-01-19 02:36:57,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 118 transitions, 292 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 02:36:57,196 INFO L242 Difference]: Finished difference. Result has 117 places, 115 transitions, 263 flow [2022-01-19 02:36:57,196 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2022-01-19 02:36:57,197 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2022-01-19 02:36:57,198 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 263 flow [2022-01-19 02:36:57,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 02:36:57,198 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:36:57,198 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] [2022-01-19 02:36:57,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 02:36:57,198 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:36:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:36:57,199 INFO L85 PathProgramCache]: Analyzing trace with hash 315089418, now seen corresponding path program 1 times [2022-01-19 02:36:57,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:36:57,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687365102] [2022-01-19 02:36:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:36:57,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:36:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:36:57,309 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 02:36:57,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:36:57,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687365102] [2022-01-19 02:36:57,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687365102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:36:57,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:36:57,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 02:36:57,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196773308] [2022-01-19 02:36:57,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:36:57,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 02:36:57,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:36:57,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 02:36:57,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 02:36:57,316 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 133 [2022-01-19 02:36:57,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 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 02:36:57,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:36:57,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 133 [2022-01-19 02:36:57,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:36:57,362 INFO L129 PetriNetUnfolder]: 29/229 cut-off events. [2022-01-19 02:36:57,362 INFO L130 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-01-19 02:36:57,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 229 events. 29/229 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 673 event pairs, 7 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 322. Up to 46 conditions per place. [2022-01-19 02:36:57,365 INFO L132 encePairwiseOnDemand]: 130/133 looper letters, 16 selfloop transitions, 2 changer transitions 1/120 dead transitions. [2022-01-19 02:36:57,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 120 transitions, 316 flow [2022-01-19 02:36:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 02:36:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 02:36:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2022-01-19 02:36:57,367 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9022556390977443 [2022-01-19 02:36:57,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2022-01-19 02:36:57,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2022-01-19 02:36:57,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:36:57,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2022-01-19 02:36:57,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 02:36:57,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 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 02:36:57,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 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 02:36:57,369 INFO L186 Difference]: Start difference. First operand has 117 places, 115 transitions, 263 flow. Second operand 3 states and 360 transitions. [2022-01-19 02:36:57,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 120 transitions, 316 flow [2022-01-19 02:36:57,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 120 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 02:36:57,373 INFO L242 Difference]: Finished difference. Result has 119 places, 115 transitions, 266 flow [2022-01-19 02:36:57,374 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=119, PETRI_TRANSITIONS=115} [2022-01-19 02:36:57,375 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2022-01-19 02:36:57,375 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 115 transitions, 266 flow [2022-01-19 02:36:57,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 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 02:36:57,375 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:36:57,375 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] [2022-01-19 02:36:57,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 02:36:57,376 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:36:57,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:36:57,376 INFO L85 PathProgramCache]: Analyzing trace with hash -93519548, now seen corresponding path program 1 times [2022-01-19 02:36:57,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:36:57,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657177921] [2022-01-19 02:36:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:36:57,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:36:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:36:57,492 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 02:36:57,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:36:57,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657177921] [2022-01-19 02:36:57,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657177921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:36:57,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:36:57,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 02:36:57,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873730697] [2022-01-19 02:36:57,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:36:57,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 02:36:57,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:36:57,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 02:36:57,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 02:36:57,495 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 133 [2022-01-19 02:36:57,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 115 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 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 02:36:57,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:36:57,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 133 [2022-01-19 02:36:57,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:36:57,600 INFO L129 PetriNetUnfolder]: 24/281 cut-off events. [2022-01-19 02:36:57,601 INFO L130 PetriNetUnfolder]: For 50/54 co-relation queries the response was YES. [2022-01-19 02:36:57,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 281 events. 24/281 cut-off events. For 50/54 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 878 event pairs, 12 based on Foata normal form. 3/266 useless extension candidates. Maximal degree in co-relation 398. Up to 45 conditions per place. [2022-01-19 02:36:57,602 INFO L132 encePairwiseOnDemand]: 125/133 looper letters, 22 selfloop transitions, 6 changer transitions 9/128 dead transitions. [2022-01-19 02:36:57,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 128 transitions, 376 flow [2022-01-19 02:36:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 02:36:57,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 02:36:57,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 756 transitions. [2022-01-19 02:36:57,604 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8120300751879699 [2022-01-19 02:36:57,604 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 756 transitions. [2022-01-19 02:36:57,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 756 transitions. [2022-01-19 02:36:57,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:36:57,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 756 transitions. [2022-01-19 02:36:57,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 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 02:36:57,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 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 02:36:57,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 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 02:36:57,613 INFO L186 Difference]: Start difference. First operand has 119 places, 115 transitions, 266 flow. Second operand 7 states and 756 transitions. [2022-01-19 02:36:57,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 128 transitions, 376 flow [2022-01-19 02:36:57,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 128 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 02:36:57,616 INFO L242 Difference]: Finished difference. Result has 126 places, 116 transitions, 286 flow [2022-01-19 02:36:57,616 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=126, PETRI_TRANSITIONS=116} [2022-01-19 02:36:57,617 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 8 predicate places. [2022-01-19 02:36:57,618 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 116 transitions, 286 flow [2022-01-19 02:36:57,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 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 02:36:57,618 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:36:57,618 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] [2022-01-19 02:36:57,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 02:36:57,619 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:36:57,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:36:57,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1414783415, now seen corresponding path program 1 times [2022-01-19 02:36:57,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:36:57,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866189556] [2022-01-19 02:36:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:36:57,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:36:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:36:57,821 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 02:36:57,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:36:57,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866189556] [2022-01-19 02:36:57,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866189556] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:36:57,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7559775] [2022-01-19 02:36:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:36:57,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:36:57,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:36:57,823 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 02:36:57,824 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 02:36:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:36:57,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-19 02:36:57,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:36:58,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:36:58,553 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 02:36:58,553 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 11 treesize of output 11 [2022-01-19 02:36:58,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 02:36:59,016 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 02:36:59,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:36:59,241 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 02:36:59,298 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 02:36:59,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:37:00,324 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:37:00,325 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 02:37:00,335 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:37:00,335 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 494 treesize of output 462 [2022-01-19 02:37:00,347 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:37:00,347 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 446 treesize of output 390 [2022-01-19 02:37:00,360 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:37:00,360 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 374 treesize of output 354 [2022-01-19 02:37:01,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 02:37:01,720 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 02:37:01,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7559775] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:37:01,720 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:37:01,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 25] total 51 [2022-01-19 02:37:01,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479484405] [2022-01-19 02:37:01,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:37:01,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-19 02:37:01,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:37:01,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-19 02:37:01,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=1882, Unknown=56, NotChecked=0, Total=2550 [2022-01-19 02:37:01,737 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 133 [2022-01-19 02:37:01,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 116 transitions, 286 flow. Second operand has 51 states, 51 states have (on average 61.80392156862745) internal successors, (3152), 51 states have internal predecessors, (3152), 0 states have call successors, (0), 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 02:37:01,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:37:01,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 133 [2022-01-19 02:37:01,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:37:03,157 INFO L129 PetriNetUnfolder]: 167/936 cut-off events. [2022-01-19 02:37:03,158 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2022-01-19 02:37:03,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 936 events. 167/936 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5964 event pairs, 14 based on Foata normal form. 4/866 useless extension candidates. Maximal degree in co-relation 1516. Up to 86 conditions per place. [2022-01-19 02:37:03,162 INFO L132 encePairwiseOnDemand]: 101/133 looper letters, 88 selfloop transitions, 39 changer transitions 34/215 dead transitions. [2022-01-19 02:37:03,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 215 transitions, 886 flow [2022-01-19 02:37:03,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 02:37:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 02:37:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2702 transitions. [2022-01-19 02:37:03,168 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4724602203182375 [2022-01-19 02:37:03,168 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2702 transitions. [2022-01-19 02:37:03,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2702 transitions. [2022-01-19 02:37:03,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:37:03,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2702 transitions. [2022-01-19 02:37:03,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 62.83720930232558) internal successors, (2702), 43 states have internal predecessors, (2702), 0 states have call successors, (0), 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 02:37:03,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 133.0) internal successors, (5852), 44 states have internal predecessors, (5852), 0 states have call successors, (0), 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 02:37:03,180 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 133.0) internal successors, (5852), 44 states have internal predecessors, (5852), 0 states have call successors, (0), 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 02:37:03,180 INFO L186 Difference]: Start difference. First operand has 126 places, 116 transitions, 286 flow. Second operand 43 states and 2702 transitions. [2022-01-19 02:37:03,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 215 transitions, 886 flow [2022-01-19 02:37:03,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 215 transitions, 872 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-01-19 02:37:03,184 INFO L242 Difference]: Finished difference. Result has 183 places, 136 transitions, 505 flow [2022-01-19 02:37:03,184 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=505, PETRI_PLACES=183, PETRI_TRANSITIONS=136} [2022-01-19 02:37:03,185 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 65 predicate places. [2022-01-19 02:37:03,185 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 136 transitions, 505 flow [2022-01-19 02:37:03,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 61.80392156862745) internal successors, (3152), 51 states have internal predecessors, (3152), 0 states have call successors, (0), 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 02:37:03,186 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:37:03,186 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:03,205 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 02:37:03,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-19 02:37:03,400 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:37:03,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:37:03,400 INFO L85 PathProgramCache]: Analyzing trace with hash 400817075, now seen corresponding path program 2 times [2022-01-19 02:37:03,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:37:03,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142854145] [2022-01-19 02:37:03,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:37:03,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:37:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:37:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 02:37:03,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:37:03,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142854145] [2022-01-19 02:37:03,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142854145] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:37:03,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091395613] [2022-01-19 02:37:03,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 02:37:03,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:37:03,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:37:03,459 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 02:37:03,476 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 02:37:03,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 02:37:03,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:37:03,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-19 02:37:03,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:37:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:37:03,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:37:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:37:04,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091395613] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:37:04,010 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:37:04,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 6] total 9 [2022-01-19 02:37:04,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584871803] [2022-01-19 02:37:04,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:37:04,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:37:04,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:37:04,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:37:04,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:37:04,013 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 133 [2022-01-19 02:37:04,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 136 transitions, 505 flow. Second operand has 9 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 0 states have call successors, (0), 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 02:37:04,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:37:04,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 133 [2022-01-19 02:37:04,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:37:04,181 INFO L129 PetriNetUnfolder]: 153/1198 cut-off events. [2022-01-19 02:37:04,181 INFO L130 PetriNetUnfolder]: For 1072/1080 co-relation queries the response was YES. [2022-01-19 02:37:04,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 1198 events. 153/1198 cut-off events. For 1072/1080 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8170 event pairs, 20 based on Foata normal form. 10/1108 useless extension candidates. Maximal degree in co-relation 2147. Up to 122 conditions per place. [2022-01-19 02:37:04,186 INFO L132 encePairwiseOnDemand]: 127/133 looper letters, 29 selfloop transitions, 30 changer transitions 0/170 dead transitions. [2022-01-19 02:37:04,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 170 transitions, 841 flow [2022-01-19 02:37:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 02:37:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 02:37:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2022-01-19 02:37:04,188 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8872180451127819 [2022-01-19 02:37:04,188 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2022-01-19 02:37:04,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2022-01-19 02:37:04,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:37:04,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2022-01-19 02:37:04,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 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 02:37:04,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 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 02:37:04,191 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 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 02:37:04,191 INFO L186 Difference]: Start difference. First operand has 183 places, 136 transitions, 505 flow. Second operand 6 states and 708 transitions. [2022-01-19 02:37:04,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 170 transitions, 841 flow [2022-01-19 02:37:04,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 170 transitions, 735 flow, removed 31 selfloop flow, removed 26 redundant places. [2022-01-19 02:37:04,196 INFO L242 Difference]: Finished difference. Result has 156 places, 161 transitions, 724 flow [2022-01-19 02:37:04,196 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=724, PETRI_PLACES=156, PETRI_TRANSITIONS=161} [2022-01-19 02:37:04,197 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 38 predicate places. [2022-01-19 02:37:04,197 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 161 transitions, 724 flow [2022-01-19 02:37:04,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 0 states have call successors, (0), 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 02:37:04,197 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:37:04,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:04,217 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 02:37:04,414 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,SelfDestructingSolverStorable6 [2022-01-19 02:37:04,415 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:37:04,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:37:04,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1811797277, now seen corresponding path program 3 times [2022-01-19 02:37:04,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:37:04,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661112670] [2022-01-19 02:37:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:37:04,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:37:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:37:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-19 02:37:04,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:37:04,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661112670] [2022-01-19 02:37:04,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661112670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:37:04,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:37:04,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 02:37:04,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409528380] [2022-01-19 02:37:04,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:37:04,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 02:37:04,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:37:04,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 02:37:04,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 02:37:04,475 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 133 [2022-01-19 02:37:04,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 161 transitions, 724 flow. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 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 02:37:04,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:37:04,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 133 [2022-01-19 02:37:04,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:37:04,638 INFO L129 PetriNetUnfolder]: 213/1816 cut-off events. [2022-01-19 02:37:04,638 INFO L130 PetriNetUnfolder]: For 1476/1476 co-relation queries the response was YES. [2022-01-19 02:37:04,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 1816 events. 213/1816 cut-off events. For 1476/1476 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 15080 event pairs, 43 based on Foata normal form. 69/1719 useless extension candidates. Maximal degree in co-relation 3178. Up to 244 conditions per place. [2022-01-19 02:37:04,647 INFO L132 encePairwiseOnDemand]: 129/133 looper letters, 67 selfloop transitions, 4 changer transitions 1/183 dead transitions. [2022-01-19 02:37:04,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 183 transitions, 1049 flow [2022-01-19 02:37:04,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 02:37:04,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 02:37:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 474 transitions. [2022-01-19 02:37:04,648 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8909774436090225 [2022-01-19 02:37:04,648 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 474 transitions. [2022-01-19 02:37:04,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 474 transitions. [2022-01-19 02:37:04,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:37:04,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 474 transitions. [2022-01-19 02:37:04,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 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 02:37:04,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 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 02:37:04,651 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 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 02:37:04,651 INFO L186 Difference]: Start difference. First operand has 156 places, 161 transitions, 724 flow. Second operand 4 states and 474 transitions. [2022-01-19 02:37:04,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 183 transitions, 1049 flow [2022-01-19 02:37:04,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 183 transitions, 1003 flow, removed 22 selfloop flow, removed 1 redundant places. [2022-01-19 02:37:04,656 INFO L242 Difference]: Finished difference. Result has 160 places, 159 transitions, 685 flow [2022-01-19 02:37:04,656 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=685, PETRI_PLACES=160, PETRI_TRANSITIONS=159} [2022-01-19 02:37:04,658 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 42 predicate places. [2022-01-19 02:37:04,658 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 159 transitions, 685 flow [2022-01-19 02:37:04,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 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 02:37:04,658 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:37:04,658 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] [2022-01-19 02:37:04,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 02:37:04,658 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:37:04,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:37:04,659 INFO L85 PathProgramCache]: Analyzing trace with hash -193834779, now seen corresponding path program 1 times [2022-01-19 02:37:04,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:37:04,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735176939] [2022-01-19 02:37:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:37:04,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:37:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:37:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:37:05,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:37:05,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735176939] [2022-01-19 02:37:05,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735176939] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:37:05,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847194183] [2022-01-19 02:37:05,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:37:05,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:37:05,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:37:05,494 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 02:37:05,506 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 02:37:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:37:05,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-19 02:37:05,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:37:07,070 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-19 02:37:07,070 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 49 treesize of output 22 [2022-01-19 02:37:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:37:07,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:37:07,619 INFO L353 Elim1Store]: treesize reduction 59, result has 41.0 percent of original size [2022-01-19 02:37:07,620 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 76 treesize of output 66 [2022-01-19 02:37:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:37:10,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847194183] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:37:10,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:37:10,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 23] total 61 [2022-01-19 02:37:10,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626196866] [2022-01-19 02:37:10,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:37:10,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-19 02:37:10,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:37:10,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-19 02:37:10,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=3186, Unknown=0, NotChecked=0, Total=3660 [2022-01-19 02:37:10,314 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 133 [2022-01-19 02:37:10,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 159 transitions, 685 flow. Second operand has 61 states, 61 states have (on average 67.75409836065573) internal successors, (4133), 61 states have internal predecessors, (4133), 0 states have call successors, (0), 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 02:37:10,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:37:10,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 133 [2022-01-19 02:37:10,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:37:15,247 INFO L129 PetriNetUnfolder]: 1759/7006 cut-off events. [2022-01-19 02:37:15,248 INFO L130 PetriNetUnfolder]: For 7009/7015 co-relation queries the response was YES. [2022-01-19 02:37:15,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14570 conditions, 7006 events. 1759/7006 cut-off events. For 7009/7015 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 71937 event pairs, 399 based on Foata normal form. 10/6342 useless extension candidates. Maximal degree in co-relation 14543. Up to 1909 conditions per place. [2022-01-19 02:37:15,277 INFO L132 encePairwiseOnDemand]: 95/133 looper letters, 148 selfloop transitions, 128 changer transitions 160/493 dead transitions. [2022-01-19 02:37:15,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 493 transitions, 3064 flow [2022-01-19 02:37:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 02:37:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 02:37:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 5559 transitions. [2022-01-19 02:37:15,285 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5224624060150376 [2022-01-19 02:37:15,285 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 5559 transitions. [2022-01-19 02:37:15,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 5559 transitions. [2022-01-19 02:37:15,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:37:15,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 5559 transitions. [2022-01-19 02:37:15,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 69.4875) internal successors, (5559), 80 states have internal predecessors, (5559), 0 states have call successors, (0), 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 02:37:15,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 133.0) internal successors, (10773), 81 states have internal predecessors, (10773), 0 states have call successors, (0), 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 02:37:15,310 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 133.0) internal successors, (10773), 81 states have internal predecessors, (10773), 0 states have call successors, (0), 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 02:37:15,310 INFO L186 Difference]: Start difference. First operand has 160 places, 159 transitions, 685 flow. Second operand 80 states and 5559 transitions. [2022-01-19 02:37:15,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 493 transitions, 3064 flow [2022-01-19 02:37:15,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 493 transitions, 3037 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-01-19 02:37:15,327 INFO L242 Difference]: Finished difference. Result has 278 places, 256 transitions, 1908 flow [2022-01-19 02:37:15,327 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=1908, PETRI_PLACES=278, PETRI_TRANSITIONS=256} [2022-01-19 02:37:15,328 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 160 predicate places. [2022-01-19 02:37:15,328 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 256 transitions, 1908 flow [2022-01-19 02:37:15,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 67.75409836065573) internal successors, (4133), 61 states have internal predecessors, (4133), 0 states have call successors, (0), 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 02:37:15,329 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:37:15,330 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] [2022-01-19 02:37:15,348 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 02:37:15,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:37:15,552 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:37:15,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:37:15,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1730009969, now seen corresponding path program 2 times [2022-01-19 02:37:15,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:37:15,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100907674] [2022-01-19 02:37:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:37:15,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:37:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:37:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:37:15,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:37:15,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100907674] [2022-01-19 02:37:15,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100907674] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:37:15,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243433893] [2022-01-19 02:37:15,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 02:37:15,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:37:15,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:37:15,716 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 02:37:15,718 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 02:37:15,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 02:37:15,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:37:15,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-19 02:37:15,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:37:15,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:37:16,224 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 02:37:16,225 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 11 treesize of output 11 [2022-01-19 02:37:16,535 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 02:37:16,869 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 02:37:16,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:37:17,340 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:37:17,341 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 48 treesize of output 14 [2022-01-19 02:37:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:37:17,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:37:19,024 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:37:19,025 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 02:37:19,049 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-01-19 02:37:19,049 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 384 treesize of output 371 [2022-01-19 02:37:19,081 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-01-19 02:37:19,082 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 333 treesize of output 293 [2022-01-19 02:37:19,114 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-01-19 02:37:19,115 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 255 treesize of output 254 [2022-01-19 02:37:22,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 02:37:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:37:22,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243433893] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:37:22,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:37:22,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 30, 28] total 58 [2022-01-19 02:37:22,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181821962] [2022-01-19 02:37:22,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:37:22,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-19 02:37:22,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:37:22,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-19 02:37:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=744, Invalid=2492, Unknown=70, NotChecked=0, Total=3306 [2022-01-19 02:37:22,039 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 133 [2022-01-19 02:37:22,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 256 transitions, 1908 flow. Second operand has 58 states, 58 states have (on average 61.793103448275865) internal successors, (3584), 58 states have internal predecessors, (3584), 0 states have call successors, (0), 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 02:37:22,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:37:22,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 133 [2022-01-19 02:37:22,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:37:26,991 INFO L129 PetriNetUnfolder]: 1717/9759 cut-off events. [2022-01-19 02:37:26,991 INFO L130 PetriNetUnfolder]: For 94789/95089 co-relation queries the response was YES. [2022-01-19 02:37:27,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40073 conditions, 9759 events. 1717/9759 cut-off events. For 94789/95089 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 112745 event pairs, 207 based on Foata normal form. 166/9370 useless extension candidates. Maximal degree in co-relation 40006. Up to 1762 conditions per place. [2022-01-19 02:37:27,089 INFO L132 encePairwiseOnDemand]: 101/133 looper letters, 214 selfloop transitions, 189 changer transitions 88/552 dead transitions. [2022-01-19 02:37:27,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 552 transitions, 6590 flow [2022-01-19 02:37:27,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-19 02:37:27,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2022-01-19 02:37:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 4854 transitions. [2022-01-19 02:37:27,094 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47397715066887997 [2022-01-19 02:37:27,094 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 4854 transitions. [2022-01-19 02:37:27,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 4854 transitions. [2022-01-19 02:37:27,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:37:27,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 4854 transitions. [2022-01-19 02:37:27,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 63.03896103896104) internal successors, (4854), 77 states have internal predecessors, (4854), 0 states have call successors, (0), 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 02:37:27,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 133.0) internal successors, (10374), 78 states have internal predecessors, (10374), 0 states have call successors, (0), 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 02:37:27,115 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 133.0) internal successors, (10374), 78 states have internal predecessors, (10374), 0 states have call successors, (0), 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 02:37:27,115 INFO L186 Difference]: Start difference. First operand has 278 places, 256 transitions, 1908 flow. Second operand 77 states and 4854 transitions. [2022-01-19 02:37:27,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 552 transitions, 6590 flow [2022-01-19 02:37:27,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 552 transitions, 5510 flow, removed 514 selfloop flow, removed 38 redundant places. [2022-01-19 02:37:27,266 INFO L242 Difference]: Finished difference. Result has 333 places, 357 transitions, 3406 flow [2022-01-19 02:37:27,267 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=3406, PETRI_PLACES=333, PETRI_TRANSITIONS=357} [2022-01-19 02:37:27,267 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 215 predicate places. [2022-01-19 02:37:27,267 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 357 transitions, 3406 flow [2022-01-19 02:37:27,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 61.793103448275865) internal successors, (3584), 58 states have internal predecessors, (3584), 0 states have call successors, (0), 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 02:37:27,268 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:37:27,269 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] [2022-01-19 02:37:27,293 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 02:37:27,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:37:27,483 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:37:27,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:37:27,484 INFO L85 PathProgramCache]: Analyzing trace with hash 221263351, now seen corresponding path program 3 times [2022-01-19 02:37:27,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:37:27,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388382574] [2022-01-19 02:37:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:37:27,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:37:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:37:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:37:28,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:37:28,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388382574] [2022-01-19 02:37:28,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388382574] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:37:28,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667880111] [2022-01-19 02:37:28,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 02:37:28,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:37:28,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:37:28,717 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 02:37:28,717 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 02:37:28,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-19 02:37:28,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:37:28,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-19 02:37:28,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:37:29,334 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 02:37:29,480 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 02:37:29,796 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 02:37:29,912 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 02:37:30,740 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-19 02:37:30,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 17 [2022-01-19 02:37:30,769 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:37:30,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:37:36,161 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-19 02:37:36,161 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 2 case distinctions, treesize of input 226 treesize of output 145 [2022-01-19 02:37:36,225 INFO L353 Elim1Store]: treesize reduction 62, result has 62.4 percent of original size [2022-01-19 02:37:36,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 821 treesize of output 815 [2022-01-19 02:37:36,291 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 02:37:36,292 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 700 treesize of output 676 [2022-01-19 02:37:36,338 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 02:37:36,339 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 624 treesize of output 524 [2022-01-19 02:37:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:37:57,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667880111] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:37:57,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:37:57,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 32, 30] total 80 [2022-01-19 02:37:57,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89986845] [2022-01-19 02:37:57,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:37:57,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-19 02:37:57,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:37:57,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-19 02:37:57,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=5725, Unknown=59, NotChecked=0, Total=6320 [2022-01-19 02:37:57,204 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2022-01-19 02:37:57,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 357 transitions, 3406 flow. Second operand has 80 states, 80 states have (on average 60.225) internal successors, (4818), 80 states have internal predecessors, (4818), 0 states have call successors, (0), 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 02:37:57,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:37:57,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2022-01-19 02:37:57,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:38:09,475 INFO L129 PetriNetUnfolder]: 4599/16892 cut-off events. [2022-01-19 02:38:09,475 INFO L130 PetriNetUnfolder]: For 132656/132808 co-relation queries the response was YES. [2022-01-19 02:38:09,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68852 conditions, 16892 events. 4599/16892 cut-off events. For 132656/132808 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 198497 event pairs, 751 based on Foata normal form. 62/16100 useless extension candidates. Maximal degree in co-relation 68763. Up to 3665 conditions per place. [2022-01-19 02:38:09,640 INFO L132 encePairwiseOnDemand]: 99/133 looper letters, 281 selfloop transitions, 324 changer transitions 109/768 dead transitions. [2022-01-19 02:38:09,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 768 transitions, 9567 flow [2022-01-19 02:38:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-19 02:38:09,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-01-19 02:38:09,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 4986 transitions. [2022-01-19 02:38:09,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4745407823355858 [2022-01-19 02:38:09,644 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 4986 transitions. [2022-01-19 02:38:09,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 4986 transitions. [2022-01-19 02:38:09,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:38:09,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 4986 transitions. [2022-01-19 02:38:09,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 63.11392405063291) internal successors, (4986), 79 states have internal predecessors, (4986), 0 states have call successors, (0), 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 02:38:09,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 133.0) internal successors, (10640), 80 states have internal predecessors, (10640), 0 states have call successors, (0), 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 02:38:09,658 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 133.0) internal successors, (10640), 80 states have internal predecessors, (10640), 0 states have call successors, (0), 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 02:38:09,658 INFO L186 Difference]: Start difference. First operand has 333 places, 357 transitions, 3406 flow. Second operand 79 states and 4986 transitions. [2022-01-19 02:38:09,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 768 transitions, 9567 flow [2022-01-19 02:38:09,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 768 transitions, 8946 flow, removed 271 selfloop flow, removed 55 redundant places. [2022-01-19 02:38:09,871 INFO L242 Difference]: Finished difference. Result has 377 places, 504 transitions, 6215 flow [2022-01-19 02:38:09,871 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=6215, PETRI_PLACES=377, PETRI_TRANSITIONS=504} [2022-01-19 02:38:09,872 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 259 predicate places. [2022-01-19 02:38:09,872 INFO L470 AbstractCegarLoop]: Abstraction has has 377 places, 504 transitions, 6215 flow [2022-01-19 02:38:09,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 60.225) internal successors, (4818), 80 states have internal predecessors, (4818), 0 states have call successors, (0), 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 02:38:09,873 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:38:09,873 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] [2022-01-19 02:38:09,900 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 02:38:10,083 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,SelfDestructingSolverStorable10 [2022-01-19 02:38:10,083 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:38:10,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:38:10,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1950530351, now seen corresponding path program 4 times [2022-01-19 02:38:10,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:38:10,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119109900] [2022-01-19 02:38:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:38:10,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:38:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:38:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:38:10,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:38:10,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119109900] [2022-01-19 02:38:10,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119109900] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:38:10,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137433680] [2022-01-19 02:38:10,812 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 02:38:10,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:38:10,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:38:10,813 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 02:38:10,813 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 02:38:10,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 02:38:10,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:38:10,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-19 02:38:10,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:38:12,204 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-19 02:38:12,205 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 47 treesize of output 20 [2022-01-19 02:38:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:38:12,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:38:12,749 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 02:38:12,749 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 76 treesize of output 78 [2022-01-19 02:38:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:38:14,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137433680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:38:14,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:38:14,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 23] total 61 [2022-01-19 02:38:14,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417377030] [2022-01-19 02:38:14,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:38:14,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-19 02:38:14,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:38:14,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-19 02:38:14,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=3157, Unknown=0, NotChecked=0, Total=3660 [2022-01-19 02:38:14,965 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 133 [2022-01-19 02:38:14,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 504 transitions, 6215 flow. Second operand has 61 states, 61 states have (on average 67.75409836065573) internal successors, (4133), 61 states have internal predecessors, (4133), 0 states have call successors, (0), 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 02:38:14,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:38:14,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 133 [2022-01-19 02:38:14,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:38:22,723 INFO L129 PetriNetUnfolder]: 4729/18999 cut-off events. [2022-01-19 02:38:22,723 INFO L130 PetriNetUnfolder]: For 362668/362953 co-relation queries the response was YES. [2022-01-19 02:38:22,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102617 conditions, 18999 events. 4729/18999 cut-off events. For 362668/362953 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 233251 event pairs, 2121 based on Foata normal form. 63/17796 useless extension candidates. Maximal degree in co-relation 102508. Up to 8646 conditions per place. [2022-01-19 02:38:22,943 INFO L132 encePairwiseOnDemand]: 96/133 looper letters, 419 selfloop transitions, 113 changer transitions 60/649 dead transitions. [2022-01-19 02:38:22,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 649 transitions, 9589 flow [2022-01-19 02:38:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-19 02:38:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-01-19 02:38:22,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 3863 transitions. [2022-01-19 02:38:22,946 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5186627282491945 [2022-01-19 02:38:22,946 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 3863 transitions. [2022-01-19 02:38:22,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 3863 transitions. [2022-01-19 02:38:22,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:38:22,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 3863 transitions. [2022-01-19 02:38:22,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 68.98214285714286) internal successors, (3863), 56 states have internal predecessors, (3863), 0 states have call successors, (0), 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 02:38:22,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 133.0) internal successors, (7581), 57 states have internal predecessors, (7581), 0 states have call successors, (0), 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 02:38:22,955 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 133.0) internal successors, (7581), 57 states have internal predecessors, (7581), 0 states have call successors, (0), 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 02:38:22,956 INFO L186 Difference]: Start difference. First operand has 377 places, 504 transitions, 6215 flow. Second operand 56 states and 3863 transitions. [2022-01-19 02:38:22,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 649 transitions, 9589 flow [2022-01-19 02:38:23,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 649 transitions, 8983 flow, removed 271 selfloop flow, removed 40 redundant places. [2022-01-19 02:38:23,580 INFO L242 Difference]: Finished difference. Result has 399 places, 550 transitions, 6974 flow [2022-01-19 02:38:23,581 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=5833, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=6974, PETRI_PLACES=399, PETRI_TRANSITIONS=550} [2022-01-19 02:38:23,582 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 281 predicate places. [2022-01-19 02:38:23,582 INFO L470 AbstractCegarLoop]: Abstraction has has 399 places, 550 transitions, 6974 flow [2022-01-19 02:38:23,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 67.75409836065573) internal successors, (4133), 61 states have internal predecessors, (4133), 0 states have call successors, (0), 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 02:38:23,583 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:38:23,583 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] [2022-01-19 02:38:23,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 02:38:23,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:38:23,784 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:38:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:38:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash -40178739, now seen corresponding path program 5 times [2022-01-19 02:38:23,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:38:23,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540746032] [2022-01-19 02:38:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:38:23,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:38:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:38:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:38:24,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:38:24,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540746032] [2022-01-19 02:38:24,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540746032] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:38:24,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024087753] [2022-01-19 02:38:24,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 02:38:24,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:38:24,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:38:24,445 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:38:24,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 02:38:24,531 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-19 02:38:24,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:38:24,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 69 conjunts are in the unsatisfiable core [2022-01-19 02:38:24,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:38:25,084 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 02:38:25,238 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 02:38:25,552 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 02:38:25,626 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 02:38:26,202 INFO L353 Elim1Store]: treesize reduction 99, result has 6.6 percent of original size [2022-01-19 02:38:26,202 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 51 treesize of output 22 [2022-01-19 02:38:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:38:26,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:38:28,919 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-19 02:38:28,920 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 2 case distinctions, treesize of input 227 treesize of output 146 [2022-01-19 02:38:28,982 INFO L353 Elim1Store]: treesize reduction 64, result has 62.1 percent of original size [2022-01-19 02:38:28,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 405 treesize of output 450 [2022-01-19 02:38:29,021 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 02:38:29,022 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 333 treesize of output 307 [2022-01-19 02:38:29,064 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 02:38:29,064 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 255 treesize of output 268 [2022-01-19 02:38:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:38:34,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024087753] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:38:34,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:38:34,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 29, 27] total 73 [2022-01-19 02:38:34,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030066758] [2022-01-19 02:38:34,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:38:34,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-19 02:38:34,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:38:34,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-19 02:38:34,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=796, Invalid=4374, Unknown=86, NotChecked=0, Total=5256 [2022-01-19 02:38:34,383 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2022-01-19 02:38:34,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 550 transitions, 6974 flow. Second operand has 73 states, 73 states have (on average 60.49315068493151) internal successors, (4416), 73 states have internal predecessors, (4416), 0 states have call successors, (0), 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 02:38:34,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:38:34,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2022-01-19 02:38:34,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:38:53,581 INFO L129 PetriNetUnfolder]: 8115/29706 cut-off events. [2022-01-19 02:38:53,581 INFO L130 PetriNetUnfolder]: For 976291/976578 co-relation queries the response was YES. [2022-01-19 02:38:53,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203092 conditions, 29706 events. 8115/29706 cut-off events. For 976291/976578 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 383791 event pairs, 1246 based on Foata normal form. 199/28376 useless extension candidates. Maximal degree in co-relation 202975. Up to 6677 conditions per place. [2022-01-19 02:38:54,032 INFO L132 encePairwiseOnDemand]: 99/133 looper letters, 454 selfloop transitions, 684 changer transitions 240/1432 dead transitions. [2022-01-19 02:38:54,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1432 transitions, 27090 flow [2022-01-19 02:38:54,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-01-19 02:38:54,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2022-01-19 02:38:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 8831 transitions. [2022-01-19 02:38:54,038 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4776870233136799 [2022-01-19 02:38:54,039 INFO L72 ComplementDD]: Start complementDD. Operand 139 states and 8831 transitions. [2022-01-19 02:38:54,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 8831 transitions. [2022-01-19 02:38:54,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:38:54,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 139 states and 8831 transitions. [2022-01-19 02:38:54,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 140 states, 139 states have (on average 63.53237410071942) internal successors, (8831), 139 states have internal predecessors, (8831), 0 states have call successors, (0), 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 02:38:54,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 140 states, 140 states have (on average 133.0) internal successors, (18620), 140 states have internal predecessors, (18620), 0 states have call successors, (0), 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 02:38:54,062 INFO L81 ComplementDD]: Finished complementDD. Result has 140 states, 140 states have (on average 133.0) internal successors, (18620), 140 states have internal predecessors, (18620), 0 states have call successors, (0), 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 02:38:54,062 INFO L186 Difference]: Start difference. First operand has 399 places, 550 transitions, 6974 flow. Second operand 139 states and 8831 transitions. [2022-01-19 02:38:54,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 1432 transitions, 27090 flow [2022-01-19 02:38:56,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1432 transitions, 26068 flow, removed 469 selfloop flow, removed 37 redundant places. [2022-01-19 02:38:56,706 INFO L242 Difference]: Finished difference. Result has 562 places, 895 transitions, 14546 flow [2022-01-19 02:38:56,706 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=6583, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=139, PETRI_FLOW=14546, PETRI_PLACES=562, PETRI_TRANSITIONS=895} [2022-01-19 02:38:56,707 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 444 predicate places. [2022-01-19 02:38:56,707 INFO L470 AbstractCegarLoop]: Abstraction has has 562 places, 895 transitions, 14546 flow [2022-01-19 02:38:56,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 60.49315068493151) internal successors, (4416), 73 states have internal predecessors, (4416), 0 states have call successors, (0), 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 02:38:56,708 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:38:56,708 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-19 02:38:56,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-19 02:38:56,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:38:56,919 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:38:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:38:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash 319901857, now seen corresponding path program 6 times [2022-01-19 02:38:56,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:38:56,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630834156] [2022-01-19 02:38:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:38:56,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:38:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:38:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 02:38:57,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:38:57,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630834156] [2022-01-19 02:38:57,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630834156] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:38:57,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664832977] [2022-01-19 02:38:57,046 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 02:38:57,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:38:57,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:38:57,048 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:38:57,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 02:38:57,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-19 02:38:57,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:38:57,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 02:38:57,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:38:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-19 02:38:57,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:38:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-19 02:38:57,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664832977] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:38:57,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:38:57,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 28 [2022-01-19 02:38:57,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600808105] [2022-01-19 02:38:57,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:38:57,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 02:38:57,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:38:57,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 02:38:57,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2022-01-19 02:38:57,811 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 133 [2022-01-19 02:38:57,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 895 transitions, 14546 flow. Second operand has 28 states, 28 states have (on average 97.0) internal successors, (2716), 28 states have internal predecessors, (2716), 0 states have call successors, (0), 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 02:38:57,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:38:57,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 133 [2022-01-19 02:38:57,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:04,859 INFO L129 PetriNetUnfolder]: 4096/19142 cut-off events. [2022-01-19 02:39:04,859 INFO L130 PetriNetUnfolder]: For 1107077/1108252 co-relation queries the response was YES. [2022-01-19 02:39:05,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151765 conditions, 19142 events. 4096/19142 cut-off events. For 1107077/1108252 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 241195 event pairs, 1749 based on Foata normal form. 242/17974 useless extension candidates. Maximal degree in co-relation 151584. Up to 6475 conditions per place. [2022-01-19 02:39:05,169 INFO L132 encePairwiseOnDemand]: 115/133 looper letters, 499 selfloop transitions, 52 changer transitions 55/721 dead transitions. [2022-01-19 02:39:05,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 721 transitions, 12840 flow [2022-01-19 02:39:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 02:39:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 02:39:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2052 transitions. [2022-01-19 02:39:05,171 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7346938775510204 [2022-01-19 02:39:05,171 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2052 transitions. [2022-01-19 02:39:05,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2052 transitions. [2022-01-19 02:39:05,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:05,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2052 transitions. [2022-01-19 02:39:05,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 97.71428571428571) internal successors, (2052), 21 states have internal predecessors, (2052), 0 states have call successors, (0), 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 02:39:05,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 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 02:39:05,175 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 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 02:39:05,175 INFO L186 Difference]: Start difference. First operand has 562 places, 895 transitions, 14546 flow. Second operand 21 states and 2052 transitions. [2022-01-19 02:39:05,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 721 transitions, 12840 flow [2022-01-19 02:39:07,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 721 transitions, 10632 flow, removed 776 selfloop flow, removed 78 redundant places. [2022-01-19 02:39:07,426 INFO L242 Difference]: Finished difference. Result has 478 places, 641 transitions, 8269 flow [2022-01-19 02:39:07,426 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=7962, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8269, PETRI_PLACES=478, PETRI_TRANSITIONS=641} [2022-01-19 02:39:07,427 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 360 predicate places. [2022-01-19 02:39:07,427 INFO L470 AbstractCegarLoop]: Abstraction has has 478 places, 641 transitions, 8269 flow [2022-01-19 02:39:07,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 97.0) internal successors, (2716), 28 states have internal predecessors, (2716), 0 states have call successors, (0), 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 02:39:07,427 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:07,427 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-19 02:39:07,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 02:39:07,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-19 02:39:07,630 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:39:07,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:07,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1444085505, now seen corresponding path program 7 times [2022-01-19 02:39:07,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:07,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316961747] [2022-01-19 02:39:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:07,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:07,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:07,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316961747] [2022-01-19 02:39:07,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316961747] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:39:07,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800244650] [2022-01-19 02:39:07,786 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 02:39:07,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:39:07,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:39:07,787 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:39:07,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-19 02:39:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:07,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-19 02:39:07,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:39:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:39:08,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:39:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:39:09,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800244650] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:39:09,164 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:39:09,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 41 [2022-01-19 02:39:09,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20794072] [2022-01-19 02:39:09,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:39:09,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-19 02:39:09,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:39:09,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-19 02:39:09,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1368, Unknown=0, NotChecked=0, Total=1640 [2022-01-19 02:39:09,167 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 133 [2022-01-19 02:39:09,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 641 transitions, 8269 flow. Second operand has 41 states, 41 states have (on average 96.78048780487805) internal successors, (3968), 41 states have internal predecessors, (3968), 0 states have call successors, (0), 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 02:39:09,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:39:09,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 133 [2022-01-19 02:39:09,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:17,098 INFO L129 PetriNetUnfolder]: 4969/22578 cut-off events. [2022-01-19 02:39:17,099 INFO L130 PetriNetUnfolder]: For 1271156/1272358 co-relation queries the response was YES. [2022-01-19 02:39:17,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177228 conditions, 22578 events. 4969/22578 cut-off events. For 1271156/1272358 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 290173 event pairs, 1116 based on Foata normal form. 337/21464 useless extension candidates. Maximal degree in co-relation 177074. Up to 4281 conditions per place. [2022-01-19 02:39:17,502 INFO L132 encePairwiseOnDemand]: 113/133 looper letters, 249 selfloop transitions, 466 changer transitions 65/894 dead transitions. [2022-01-19 02:39:17,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 894 transitions, 14956 flow [2022-01-19 02:39:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 02:39:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 02:39:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3733 transitions. [2022-01-19 02:39:17,505 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7386228729719034 [2022-01-19 02:39:17,505 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3733 transitions. [2022-01-19 02:39:17,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3733 transitions. [2022-01-19 02:39:17,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:17,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3733 transitions. [2022-01-19 02:39:17,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 98.23684210526316) internal successors, (3733), 38 states have internal predecessors, (3733), 0 states have call successors, (0), 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 02:39:17,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 133.0) internal successors, (5187), 39 states have internal predecessors, (5187), 0 states have call successors, (0), 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 02:39:17,511 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 133.0) internal successors, (5187), 39 states have internal predecessors, (5187), 0 states have call successors, (0), 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 02:39:17,511 INFO L186 Difference]: Start difference. First operand has 478 places, 641 transitions, 8269 flow. Second operand 38 states and 3733 transitions. [2022-01-19 02:39:17,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 894 transitions, 14956 flow [2022-01-19 02:39:19,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 894 transitions, 14244 flow, removed 327 selfloop flow, removed 31 redundant places. [2022-01-19 02:39:19,967 INFO L242 Difference]: Finished difference. Result has 463 places, 762 transitions, 11349 flow [2022-01-19 02:39:19,967 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=7019, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=11349, PETRI_PLACES=463, PETRI_TRANSITIONS=762} [2022-01-19 02:39:19,967 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 345 predicate places. [2022-01-19 02:39:19,968 INFO L470 AbstractCegarLoop]: Abstraction has has 463 places, 762 transitions, 11349 flow [2022-01-19 02:39:19,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 96.78048780487805) internal successors, (3968), 41 states have internal predecessors, (3968), 0 states have call successors, (0), 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 02:39:19,968 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:19,968 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-19 02:39:19,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-19 02:39:20,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-19 02:39:20,169 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:39:20,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:20,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1653979319, now seen corresponding path program 8 times [2022-01-19 02:39:20,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:20,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047752097] [2022-01-19 02:39:20,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:20,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:20,310 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:39:20,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:20,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047752097] [2022-01-19 02:39:20,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047752097] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:39:20,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644882150] [2022-01-19 02:39:20,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 02:39:20,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:39:20,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:39:20,311 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:39:20,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-19 02:39:20,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 02:39:20,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:39:20,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-19 02:39:20,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:39:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:39:20,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:39:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:39:21,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644882150] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:39:21,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:39:21,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2022-01-19 02:39:21,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274521614] [2022-01-19 02:39:21,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:39:21,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-19 02:39:21,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:39:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-19 02:39:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1366, Unknown=0, NotChecked=0, Total=1640 [2022-01-19 02:39:21,675 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 133 [2022-01-19 02:39:21,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 762 transitions, 11349 flow. Second operand has 41 states, 41 states have (on average 96.7560975609756) internal successors, (3967), 41 states have internal predecessors, (3967), 0 states have call successors, (0), 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 02:39:21,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:39:21,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 133 [2022-01-19 02:39:21,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:26,021 INFO L129 PetriNetUnfolder]: 2292/11694 cut-off events. [2022-01-19 02:39:26,022 INFO L130 PetriNetUnfolder]: For 586217/586945 co-relation queries the response was YES. [2022-01-19 02:39:26,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83023 conditions, 11694 events. 2292/11694 cut-off events. For 586217/586945 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 139247 event pairs, 819 based on Foata normal form. 430/11195 useless extension candidates. Maximal degree in co-relation 82879. Up to 2271 conditions per place. [2022-01-19 02:39:26,179 INFO L132 encePairwiseOnDemand]: 114/133 looper letters, 221 selfloop transitions, 113 changer transitions 194/631 dead transitions. [2022-01-19 02:39:26,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 631 transitions, 10936 flow [2022-01-19 02:39:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 02:39:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 02:39:26,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 4124 transitions. [2022-01-19 02:39:26,189 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7382742570712496 [2022-01-19 02:39:26,189 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 4124 transitions. [2022-01-19 02:39:26,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 4124 transitions. [2022-01-19 02:39:26,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:26,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 4124 transitions. [2022-01-19 02:39:26,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 98.19047619047619) internal successors, (4124), 42 states have internal predecessors, (4124), 0 states have call successors, (0), 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 02:39:26,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 133.0) internal successors, (5719), 43 states have internal predecessors, (5719), 0 states have call successors, (0), 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 02:39:26,197 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 133.0) internal successors, (5719), 43 states have internal predecessors, (5719), 0 states have call successors, (0), 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 02:39:26,197 INFO L186 Difference]: Start difference. First operand has 463 places, 762 transitions, 11349 flow. Second operand 42 states and 4124 transitions. [2022-01-19 02:39:26,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 631 transitions, 10936 flow [2022-01-19 02:39:27,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 631 transitions, 10003 flow, removed 411 selfloop flow, removed 49 redundant places. [2022-01-19 02:39:27,424 INFO L242 Difference]: Finished difference. Result has 441 places, 405 transitions, 5023 flow [2022-01-19 02:39:27,424 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=5998, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5023, PETRI_PLACES=441, PETRI_TRANSITIONS=405} [2022-01-19 02:39:27,424 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 323 predicate places. [2022-01-19 02:39:27,425 INFO L470 AbstractCegarLoop]: Abstraction has has 441 places, 405 transitions, 5023 flow [2022-01-19 02:39:27,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 96.7560975609756) internal successors, (3967), 41 states have internal predecessors, (3967), 0 states have call successors, (0), 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 02:39:27,425 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:27,425 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-19 02:39:27,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-19 02:39:27,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-19 02:39:27,639 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:39:27,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:27,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1877611692, now seen corresponding path program 9 times [2022-01-19 02:39:27,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:27,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993160197] [2022-01-19 02:39:27,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:27,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 02:39:27,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:27,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993160197] [2022-01-19 02:39:27,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993160197] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:39:27,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378350414] [2022-01-19 02:39:27,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 02:39:27,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:39:27,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:39:27,884 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:39:27,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-19 02:39:27,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-19 02:39:27,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:39:27,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-19 02:39:27,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:39:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 31 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 02:39:28,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:39:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 26 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 02:39:28,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378350414] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:39:28,953 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:39:28,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-01-19 02:39:28,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21876814] [2022-01-19 02:39:28,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:39:28,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-19 02:39:28,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:39:28,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-19 02:39:28,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1611, Unknown=0, NotChecked=0, Total=1892 [2022-01-19 02:39:28,956 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 133 [2022-01-19 02:39:28,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 405 transitions, 5023 flow. Second operand has 44 states, 44 states have (on average 98.43181818181819) internal successors, (4331), 44 states have internal predecessors, (4331), 0 states have call successors, (0), 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 02:39:28,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:39:28,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 133 [2022-01-19 02:39:28,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:31,245 INFO L129 PetriNetUnfolder]: 1399/6796 cut-off events. [2022-01-19 02:39:31,245 INFO L130 PetriNetUnfolder]: For 288258/288678 co-relation queries the response was YES. [2022-01-19 02:39:31,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45720 conditions, 6796 events. 1399/6796 cut-off events. For 288258/288678 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 69926 event pairs, 681 based on Foata normal form. 35/6299 useless extension candidates. Maximal degree in co-relation 45586. Up to 2272 conditions per place. [2022-01-19 02:39:31,325 INFO L132 encePairwiseOnDemand]: 118/133 looper letters, 142 selfloop transitions, 14 changer transitions 104/346 dead transitions. [2022-01-19 02:39:31,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 346 transitions, 4751 flow [2022-01-19 02:39:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 02:39:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 02:39:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2384 transitions. [2022-01-19 02:39:31,327 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7468671679197995 [2022-01-19 02:39:31,327 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2384 transitions. [2022-01-19 02:39:31,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2384 transitions. [2022-01-19 02:39:31,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:31,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2384 transitions. [2022-01-19 02:39:31,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 99.33333333333333) internal successors, (2384), 24 states have internal predecessors, (2384), 0 states have call successors, (0), 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 02:39:31,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 133.0) internal successors, (3325), 25 states have internal predecessors, (3325), 0 states have call successors, (0), 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 02:39:31,331 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 133.0) internal successors, (3325), 25 states have internal predecessors, (3325), 0 states have call successors, (0), 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 02:39:31,331 INFO L186 Difference]: Start difference. First operand has 441 places, 405 transitions, 5023 flow. Second operand 24 states and 2384 transitions. [2022-01-19 02:39:31,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 346 transitions, 4751 flow [2022-01-19 02:39:31,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 346 transitions, 4174 flow, removed 160 selfloop flow, removed 74 redundant places. [2022-01-19 02:39:31,802 INFO L242 Difference]: Finished difference. Result has 338 places, 238 transitions, 2134 flow [2022-01-19 02:39:31,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=3089, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2134, PETRI_PLACES=338, PETRI_TRANSITIONS=238} [2022-01-19 02:39:31,802 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 220 predicate places. [2022-01-19 02:39:31,802 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 238 transitions, 2134 flow [2022-01-19 02:39:31,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 98.43181818181819) internal successors, (4331), 44 states have internal predecessors, (4331), 0 states have call successors, (0), 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 02:39:31,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:31,803 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-19 02:39:31,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-19 02:39:32,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-19 02:39:32,010 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:39:32,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:32,010 INFO L85 PathProgramCache]: Analyzing trace with hash 480319130, now seen corresponding path program 10 times [2022-01-19 02:39:32,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:32,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779900250] [2022-01-19 02:39:32,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:32,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 02:39:32,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:32,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779900250] [2022-01-19 02:39:32,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779900250] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:39:32,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425973266] [2022-01-19 02:39:32,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 02:39:32,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:39:32,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:39:32,171 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:39:32,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-19 02:39:32,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 02:39:32,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:39:32,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 63 conjunts are in the unsatisfiable core [2022-01-19 02:39:32,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:39:33,963 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-19 02:39:33,964 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 47 treesize of output 20 [2022-01-19 02:39:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:33,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:39:34,522 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 02:39:34,522 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 76 treesize of output 78 [2022-01-19 02:39:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:37,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425973266] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:39:37,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:39:37,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 25] total 51 [2022-01-19 02:39:37,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484715840] [2022-01-19 02:39:37,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:39:37,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-19 02:39:37,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:39:37,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-19 02:39:37,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2205, Unknown=0, NotChecked=0, Total=2550 [2022-01-19 02:39:37,069 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 133 [2022-01-19 02:39:37,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 238 transitions, 2134 flow. Second operand has 51 states, 51 states have (on average 75.3921568627451) internal successors, (3845), 51 states have internal predecessors, (3845), 0 states have call successors, (0), 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 02:39:37,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:39:37,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 133 [2022-01-19 02:39:37,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:40,793 INFO L129 PetriNetUnfolder]: 2186/8488 cut-off events. [2022-01-19 02:39:40,794 INFO L130 PetriNetUnfolder]: For 201258/201405 co-relation queries the response was YES. [2022-01-19 02:39:40,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51164 conditions, 8488 events. 2186/8488 cut-off events. For 201258/201405 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 87622 event pairs, 818 based on Foata normal form. 19/7963 useless extension candidates. Maximal degree in co-relation 51069. Up to 3150 conditions per place. [2022-01-19 02:39:40,864 INFO L132 encePairwiseOnDemand]: 102/133 looper letters, 252 selfloop transitions, 135 changer transitions 95/546 dead transitions. [2022-01-19 02:39:40,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 546 transitions, 8245 flow [2022-01-19 02:39:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-19 02:39:40,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-01-19 02:39:40,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 4422 transitions. [2022-01-19 02:39:40,867 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5833003561535417 [2022-01-19 02:39:40,867 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 4422 transitions. [2022-01-19 02:39:40,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 4422 transitions. [2022-01-19 02:39:40,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:40,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 4422 transitions. [2022-01-19 02:39:40,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 77.57894736842105) internal successors, (4422), 57 states have internal predecessors, (4422), 0 states have call successors, (0), 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 02:39:40,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 133.0) internal successors, (7714), 58 states have internal predecessors, (7714), 0 states have call successors, (0), 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 02:39:40,874 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 133.0) internal successors, (7714), 58 states have internal predecessors, (7714), 0 states have call successors, (0), 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 02:39:40,874 INFO L186 Difference]: Start difference. First operand has 338 places, 238 transitions, 2134 flow. Second operand 57 states and 4422 transitions. [2022-01-19 02:39:40,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 546 transitions, 8245 flow [2022-01-19 02:39:41,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 546 transitions, 6451 flow, removed 876 selfloop flow, removed 49 redundant places. [2022-01-19 02:39:41,185 INFO L242 Difference]: Finished difference. Result has 311 places, 348 transitions, 3961 flow [2022-01-19 02:39:41,185 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=3961, PETRI_PLACES=311, PETRI_TRANSITIONS=348} [2022-01-19 02:39:41,185 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 193 predicate places. [2022-01-19 02:39:41,185 INFO L470 AbstractCegarLoop]: Abstraction has has 311 places, 348 transitions, 3961 flow [2022-01-19 02:39:41,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 75.3921568627451) internal successors, (3845), 51 states have internal predecessors, (3845), 0 states have call successors, (0), 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 02:39:41,186 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:41,186 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-19 02:39:41,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-19 02:39:41,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-19 02:39:41,387 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:39:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:41,388 INFO L85 PathProgramCache]: Analyzing trace with hash -233299632, now seen corresponding path program 11 times [2022-01-19 02:39:41,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:41,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156981016] [2022-01-19 02:39:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:41,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 02:39:41,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:41,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156981016] [2022-01-19 02:39:41,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156981016] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:39:41,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643114223] [2022-01-19 02:39:41,519 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 02:39:41,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:39:41,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:39:41,520 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:39:41,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-19 02:39:41,604 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-19 02:39:41,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:39:41,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-19 02:39:41,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:39:42,821 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-19 02:39:42,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 17 [2022-01-19 02:39:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:42,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:39:43,289 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 02:39:43,289 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 76 treesize of output 78 [2022-01-19 02:39:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:45,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643114223] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:39:45,438 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:39:45,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 25, 25] total 49 [2022-01-19 02:39:45,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337803987] [2022-01-19 02:39:45,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:39:45,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-19 02:39:45,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:39:45,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-19 02:39:45,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=2005, Unknown=0, NotChecked=0, Total=2352 [2022-01-19 02:39:45,441 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 133 [2022-01-19 02:39:45,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 348 transitions, 3961 flow. Second operand has 49 states, 49 states have (on average 75.51020408163265) internal successors, (3700), 49 states have internal predecessors, (3700), 0 states have call successors, (0), 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 02:39:45,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:39:45,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 133 [2022-01-19 02:39:45,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:57,627 INFO L129 PetriNetUnfolder]: 9494/33890 cut-off events. [2022-01-19 02:39:57,627 INFO L130 PetriNetUnfolder]: For 510814/511599 co-relation queries the response was YES. [2022-01-19 02:39:58,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192948 conditions, 33890 events. 9494/33890 cut-off events. For 510814/511599 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 425425 event pairs, 1220 based on Foata normal form. 117/32371 useless extension candidates. Maximal degree in co-relation 192860. Up to 7903 conditions per place. [2022-01-19 02:39:58,087 INFO L132 encePairwiseOnDemand]: 109/133 looper letters, 564 selfloop transitions, 855 changer transitions 212/1695 dead transitions. [2022-01-19 02:39:58,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 1695 transitions, 27664 flow [2022-01-19 02:39:58,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-19 02:39:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2022-01-19 02:39:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 9192 transitions. [2022-01-19 02:39:58,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5907075380759591 [2022-01-19 02:39:58,092 INFO L72 ComplementDD]: Start complementDD. Operand 117 states and 9192 transitions. [2022-01-19 02:39:58,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 9192 transitions. [2022-01-19 02:39:58,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:58,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 117 states and 9192 transitions. [2022-01-19 02:39:58,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 118 states, 117 states have (on average 78.56410256410257) internal successors, (9192), 117 states have internal predecessors, (9192), 0 states have call successors, (0), 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 02:39:58,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 118 states, 118 states have (on average 133.0) internal successors, (15694), 118 states have internal predecessors, (15694), 0 states have call successors, (0), 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 02:39:58,109 INFO L81 ComplementDD]: Finished complementDD. Result has 118 states, 118 states have (on average 133.0) internal successors, (15694), 118 states have internal predecessors, (15694), 0 states have call successors, (0), 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 02:39:58,109 INFO L186 Difference]: Start difference. First operand has 311 places, 348 transitions, 3961 flow. Second operand 117 states and 9192 transitions. [2022-01-19 02:39:58,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 1695 transitions, 27664 flow [2022-01-19 02:39:59,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 1695 transitions, 26705 flow, removed 461 selfloop flow, removed 22 redundant places. [2022-01-19 02:39:59,621 INFO L242 Difference]: Finished difference. Result has 485 places, 1057 transitions, 17686 flow [2022-01-19 02:39:59,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=3767, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=117, PETRI_FLOW=17686, PETRI_PLACES=485, PETRI_TRANSITIONS=1057} [2022-01-19 02:39:59,622 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 367 predicate places. [2022-01-19 02:39:59,622 INFO L470 AbstractCegarLoop]: Abstraction has has 485 places, 1057 transitions, 17686 flow [2022-01-19 02:39:59,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 75.51020408163265) internal successors, (3700), 49 states have internal predecessors, (3700), 0 states have call successors, (0), 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 02:39:59,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:59,622 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-19 02:39:59,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-19 02:39:59,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:39:59,823 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:39:59,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2146002187, now seen corresponding path program 12 times [2022-01-19 02:39:59,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:59,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805723635] [2022-01-19 02:39:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:59,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:40:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:40:01,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:40:01,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805723635] [2022-01-19 02:40:01,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805723635] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:40:01,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370534800] [2022-01-19 02:40:01,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 02:40:01,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:40:01,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:40:01,021 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:40:01,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-19 02:40:01,151 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-19 02:40:01,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:40:01,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-19 02:40:01,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:40:01,927 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-01-19 02:40:01,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 18 [2022-01-19 02:40:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 02:40:01,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:40:02,573 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-01-19 02:40:02,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-01-19 02:40:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 02:40:03,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370534800] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:40:03,192 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:40:03,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 17, 12] total 53 [2022-01-19 02:40:03,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930816191] [2022-01-19 02:40:03,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:40:03,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-19 02:40:03,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:40:03,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-19 02:40:03,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2022-01-19 02:40:03,195 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 133 [2022-01-19 02:40:03,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 1057 transitions, 17686 flow. Second operand has 53 states, 53 states have (on average 68.69811320754717) internal successors, (3641), 53 states have internal predecessors, (3641), 0 states have call successors, (0), 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 02:40:03,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:40:03,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 133 [2022-01-19 02:40:03,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:40:17,930 INFO L129 PetriNetUnfolder]: 5453/20671 cut-off events. [2022-01-19 02:40:17,930 INFO L130 PetriNetUnfolder]: For 900991/901604 co-relation queries the response was YES. [2022-01-19 02:40:18,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160903 conditions, 20671 events. 5453/20671 cut-off events. For 900991/901604 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 244260 event pairs, 1232 based on Foata normal form. 267/19822 useless extension candidates. Maximal degree in co-relation 160732. Up to 4722 conditions per place. [2022-01-19 02:40:18,322 INFO L132 encePairwiseOnDemand]: 108/133 looper letters, 415 selfloop transitions, 374 changer transitions 388/1234 dead transitions. [2022-01-19 02:40:18,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 1234 transitions, 26894 flow [2022-01-19 02:40:18,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-19 02:40:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2022-01-19 02:40:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 9194 transitions. [2022-01-19 02:40:18,327 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5276932789990243 [2022-01-19 02:40:18,327 INFO L72 ComplementDD]: Start complementDD. Operand 131 states and 9194 transitions. [2022-01-19 02:40:18,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 9194 transitions. [2022-01-19 02:40:18,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:40:18,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 131 states and 9194 transitions. [2022-01-19 02:40:18,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 132 states, 131 states have (on average 70.18320610687023) internal successors, (9194), 131 states have internal predecessors, (9194), 0 states have call successors, (0), 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 02:40:18,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 132 states, 132 states have (on average 133.0) internal successors, (17556), 132 states have internal predecessors, (17556), 0 states have call successors, (0), 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 02:40:18,347 INFO L81 ComplementDD]: Finished complementDD. Result has 132 states, 132 states have (on average 133.0) internal successors, (17556), 132 states have internal predecessors, (17556), 0 states have call successors, (0), 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 02:40:18,347 INFO L186 Difference]: Start difference. First operand has 485 places, 1057 transitions, 17686 flow. Second operand 131 states and 9194 transitions. [2022-01-19 02:40:18,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 1234 transitions, 26894 flow [2022-01-19 02:40:20,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1234 transitions, 22998 flow, removed 1793 selfloop flow, removed 83 redundant places. [2022-01-19 02:40:20,499 INFO L242 Difference]: Finished difference. Result has 564 places, 638 transitions, 10553 flow [2022-01-19 02:40:20,499 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=7941, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=131, PETRI_FLOW=10553, PETRI_PLACES=564, PETRI_TRANSITIONS=638} [2022-01-19 02:40:20,500 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 446 predicate places. [2022-01-19 02:40:20,500 INFO L470 AbstractCegarLoop]: Abstraction has has 564 places, 638 transitions, 10553 flow [2022-01-19 02:40:20,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 68.69811320754717) internal successors, (3641), 53 states have internal predecessors, (3641), 0 states have call successors, (0), 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 02:40:20,500 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:40:20,501 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-19 02:40:20,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-19 02:40:20,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:40:20,701 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:40:20,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:40:20,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1726533075, now seen corresponding path program 13 times [2022-01-19 02:40:20,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:40:20,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942435972] [2022-01-19 02:40:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:40:20,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:40:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:40:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 02:40:20,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:40:20,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942435972] [2022-01-19 02:40:20,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942435972] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:40:20,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485629674] [2022-01-19 02:40:20,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 02:40:20,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:40:20,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:40:20,956 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:40:20,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-19 02:40:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:40:21,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 93 conjunts are in the unsatisfiable core [2022-01-19 02:40:21,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:40:21,696 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 02:40:21,886 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 02:40:22,171 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 02:40:22,238 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 02:40:22,955 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-01-19 02:40:22,955 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 22 [2022-01-19 02:40:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:40:23,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:40:25,988 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-01-19 02:40:25,988 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 2 case distinctions, treesize of input 344 treesize of output 189 [2022-01-19 02:40:26,049 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-19 02:40:26,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 528 treesize of output 528 [2022-01-19 02:40:26,108 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-19 02:40:26,109 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 450 treesize of output 408 [2022-01-19 02:40:26,170 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-19 02:40:26,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 330 treesize of output 348 [2022-01-19 02:40:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:40:30,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485629674] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:40:30,845 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:40:30,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 38, 35] total 76 [2022-01-19 02:40:30,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523207824] [2022-01-19 02:40:30,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:40:30,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-19 02:40:30,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:40:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-19 02:40:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1033, Invalid=4596, Unknown=71, NotChecked=0, Total=5700 [2022-01-19 02:40:30,849 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2022-01-19 02:40:30,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 638 transitions, 10553 flow. Second operand has 76 states, 76 states have (on average 60.69736842105263) internal successors, (4613), 76 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:40:30,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:40:30,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2022-01-19 02:40:30,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:40:45,872 INFO L129 PetriNetUnfolder]: 6146/23086 cut-off events. [2022-01-19 02:40:45,872 INFO L130 PetriNetUnfolder]: For 1009608/1010274 co-relation queries the response was YES. [2022-01-19 02:40:46,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182887 conditions, 23086 events. 6146/23086 cut-off events. For 1009608/1010274 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 271684 event pairs, 1336 based on Foata normal form. 134/22072 useless extension candidates. Maximal degree in co-relation 182685. Up to 5261 conditions per place. [2022-01-19 02:40:46,365 INFO L132 encePairwiseOnDemand]: 97/133 looper letters, 365 selfloop transitions, 543 changer transitions 221/1183 dead transitions. [2022-01-19 02:40:46,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 1183 transitions, 26996 flow [2022-01-19 02:40:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-19 02:40:46,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2022-01-19 02:40:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 7264 transitions. [2022-01-19 02:40:46,370 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4790924680121356 [2022-01-19 02:40:46,370 INFO L72 ComplementDD]: Start complementDD. Operand 114 states and 7264 transitions. [2022-01-19 02:40:46,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 7264 transitions. [2022-01-19 02:40:46,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:40:46,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 114 states and 7264 transitions. [2022-01-19 02:40:46,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 115 states, 114 states have (on average 63.719298245614034) internal successors, (7264), 114 states have internal predecessors, (7264), 0 states have call successors, (0), 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 02:40:46,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 115 states, 115 states have (on average 133.0) internal successors, (15295), 115 states have internal predecessors, (15295), 0 states have call successors, (0), 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 02:40:46,385 INFO L81 ComplementDD]: Finished complementDD. Result has 115 states, 115 states have (on average 133.0) internal successors, (15295), 115 states have internal predecessors, (15295), 0 states have call successors, (0), 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 02:40:46,385 INFO L186 Difference]: Start difference. First operand has 564 places, 638 transitions, 10553 flow. Second operand 114 states and 7264 transitions. [2022-01-19 02:40:46,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 1183 transitions, 26996 flow [2022-01-19 02:40:49,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 1183 transitions, 24214 flow, removed 1353 selfloop flow, removed 86 redundant places. [2022-01-19 02:40:49,873 INFO L242 Difference]: Finished difference. Result has 574 places, 717 transitions, 13370 flow [2022-01-19 02:40:49,873 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=10089, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=114, PETRI_FLOW=13370, PETRI_PLACES=574, PETRI_TRANSITIONS=717} [2022-01-19 02:40:49,874 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 456 predicate places. [2022-01-19 02:40:49,874 INFO L470 AbstractCegarLoop]: Abstraction has has 574 places, 717 transitions, 13370 flow [2022-01-19 02:40:49,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 60.69736842105263) internal successors, (4613), 76 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:40:49,874 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:40:49,874 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-19 02:40:49,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-19 02:40:50,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:40:50,087 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:40:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:40:50,088 INFO L85 PathProgramCache]: Analyzing trace with hash 86884059, now seen corresponding path program 14 times [2022-01-19 02:40:50,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:40:50,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154637998] [2022-01-19 02:40:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:40:50,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:40:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:40:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:40:51,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:40:51,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154637998] [2022-01-19 02:40:51,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154637998] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:40:51,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469335433] [2022-01-19 02:40:51,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 02:40:51,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:40:51,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:40:51,547 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:40:51,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-19 02:40:51,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 02:40:51,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:40:51,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 93 conjunts are in the unsatisfiable core [2022-01-19 02:40:51,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:40:51,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:40:51,697 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-19 02:40:51,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-01-19 02:40:52,246 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 02:40:52,246 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 15 treesize of output 15 [2022-01-19 02:40:52,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 02:40:53,161 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:40:53,238 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 02:40:54,742 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-01-19 02:40:54,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 30 [2022-01-19 02:40:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:40:54,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:41:01,105 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:41:01,106 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 270 treesize of output 174 [2022-01-19 02:41:01,178 INFO L353 Elim1Store]: treesize reduction 142, result has 43.4 percent of original size [2022-01-19 02:41:01,178 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 520 treesize of output 552 [2022-01-19 02:41:01,260 INFO L353 Elim1Store]: treesize reduction 142, result has 43.4 percent of original size [2022-01-19 02:41:01,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 444 treesize of output 436 [2022-01-19 02:41:01,339 INFO L353 Elim1Store]: treesize reduction 142, result has 43.4 percent of original size [2022-01-19 02:41:01,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 328 treesize of output 378 [2022-01-19 02:41:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:41:34,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469335433] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:41:34,994 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:41:34,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 38, 37] total 98 [2022-01-19 02:41:34,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206518624] [2022-01-19 02:41:34,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:41:34,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-19 02:41:34,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:41:34,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-19 02:41:34,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=958, Invalid=8479, Unknown=69, NotChecked=0, Total=9506 [2022-01-19 02:41:34,999 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 133 [2022-01-19 02:41:35,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 717 transitions, 13370 flow. Second operand has 98 states, 98 states have (on average 57.224489795918366) internal successors, (5608), 98 states have internal predecessors, (5608), 0 states have call successors, (0), 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 02:41:35,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:41:35,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 133 [2022-01-19 02:41:35,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:41:52,592 INFO L129 PetriNetUnfolder]: 6117/25259 cut-off events. [2022-01-19 02:41:52,592 INFO L130 PetriNetUnfolder]: For 889143/889914 co-relation queries the response was YES. [2022-01-19 02:41:52,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176651 conditions, 25259 events. 6117/25259 cut-off events. For 889143/889914 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 308248 event pairs, 3003 based on Foata normal form. 68/23620 useless extension candidates. Maximal degree in co-relation 176465. Up to 11582 conditions per place. [2022-01-19 02:41:53,044 INFO L132 encePairwiseOnDemand]: 92/133 looper letters, 612 selfloop transitions, 139 changer transitions 63/865 dead transitions. [2022-01-19 02:41:53,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 865 transitions, 18233 flow [2022-01-19 02:41:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-19 02:41:53,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2022-01-19 02:41:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 4502 transitions. [2022-01-19 02:41:53,047 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.43960550727468023 [2022-01-19 02:41:53,047 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 4502 transitions. [2022-01-19 02:41:53,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 4502 transitions. [2022-01-19 02:41:53,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:41:53,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 4502 transitions. [2022-01-19 02:41:53,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 58.467532467532465) internal successors, (4502), 77 states have internal predecessors, (4502), 0 states have call successors, (0), 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 02:41:53,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 133.0) internal successors, (10374), 78 states have internal predecessors, (10374), 0 states have call successors, (0), 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 02:41:53,056 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 133.0) internal successors, (10374), 78 states have internal predecessors, (10374), 0 states have call successors, (0), 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 02:41:53,056 INFO L186 Difference]: Start difference. First operand has 574 places, 717 transitions, 13370 flow. Second operand 77 states and 4502 transitions. [2022-01-19 02:41:53,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 865 transitions, 18233 flow [2022-01-19 02:41:56,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 865 transitions, 17048 flow, removed 291 selfloop flow, removed 80 redundant places. [2022-01-19 02:41:56,265 INFO L242 Difference]: Finished difference. Result has 559 places, 770 transitions, 13916 flow [2022-01-19 02:41:56,265 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=12297, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=13916, PETRI_PLACES=559, PETRI_TRANSITIONS=770} [2022-01-19 02:41:56,266 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 441 predicate places. [2022-01-19 02:41:56,266 INFO L470 AbstractCegarLoop]: Abstraction has has 559 places, 770 transitions, 13916 flow [2022-01-19 02:41:56,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 57.224489795918366) internal successors, (5608), 98 states have internal predecessors, (5608), 0 states have call successors, (0), 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 02:41:56,267 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:41:56,267 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-19 02:41:56,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-19 02:41:56,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-19 02:41:56,467 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:41:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:41:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1889053617, now seen corresponding path program 15 times [2022-01-19 02:41:56,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:41:56,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127844638] [2022-01-19 02:41:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:41:56,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:41:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:41:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 02:41:56,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:41:56,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127844638] [2022-01-19 02:41:56,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127844638] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:41:56,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658056610] [2022-01-19 02:41:56,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 02:41:56,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:41:56,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:41:56,646 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:41:56,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-19 02:41:56,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-19 02:41:56,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:41:56,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 82 conjunts are in the unsatisfiable core [2022-01-19 02:41:56,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:41:57,165 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 02:41:57,299 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 02:41:57,444 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 02:41:57,708 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 02:41:57,777 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 02:41:58,430 INFO L353 Elim1Store]: treesize reduction 162, result has 4.1 percent of original size [2022-01-19 02:41:58,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 24 [2022-01-19 02:41:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:41:58,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:42:22,639 INFO L353 Elim1Store]: treesize reduction 96, result has 39.6 percent of original size [2022-01-19 02:42:22,640 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 3 case distinctions, treesize of input 394 treesize of output 222 [2022-01-19 02:42:22,869 INFO L353 Elim1Store]: treesize reduction 192, result has 58.5 percent of original size [2022-01-19 02:42:22,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1124 treesize of output 1230 [2022-01-19 02:42:22,976 INFO L353 Elim1Store]: treesize reduction 144, result has 42.6 percent of original size [2022-01-19 02:42:22,976 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 926 treesize of output 808 [2022-01-19 02:42:23,082 INFO L353 Elim1Store]: treesize reduction 144, result has 42.6 percent of original size [2022-01-19 02:42:23,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 702 treesize of output 696 Received shutdown request... [2022-01-19 02:50:32,454 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 02:50:32,463 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 02:50:32,463 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 02:50:32,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-19 02:50:32,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:50:32,655 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 152 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2022-01-19 02:50:32,656 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 02:50:32,656 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 02:50:32,659 INFO L732 BasicCegarLoop]: Path program histogram: [15, 3, 1, 1, 1, 1, 1] [2022-01-19 02:50:32,660 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 02:50:32,660 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 02:50:32,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 02:50:32 BasicIcfg [2022-01-19 02:50:32,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 02:50:32,663 INFO L158 Benchmark]: Toolchain (without parser) took 817089.53ms. Allocated memory was 375.4MB in the beginning and 8.6GB in the end (delta: 8.2GB). Free memory was 319.1MB in the beginning and 5.0GB in the end (delta: -4.6GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2022-01-19 02:50:32,663 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 375.4MB. Free memory is still 335.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 02:50:32,668 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.15ms. Allocated memory was 375.4MB in the beginning and 455.1MB in the end (delta: 79.7MB). Free memory was 318.9MB in the beginning and 425.4MB in the end (delta: -106.5MB). Peak memory consumption was 10.9MB. Max. memory is 16.0GB. [2022-01-19 02:50:32,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.70ms. Allocated memory is still 455.1MB. Free memory was 425.4MB in the beginning and 423.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:50:32,669 INFO L158 Benchmark]: Boogie Preprocessor took 17.67ms. Allocated memory is still 455.1MB. Free memory was 423.3MB in the beginning and 421.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:50:32,669 INFO L158 Benchmark]: RCFGBuilder took 406.31ms. Allocated memory is still 455.1MB. Free memory was 421.2MB in the beginning and 400.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2022-01-19 02:50:32,669 INFO L158 Benchmark]: TraceAbstraction took 816438.84ms. Allocated memory was 455.1MB in the beginning and 8.6GB in the end (delta: 8.1GB). Free memory was 399.2MB in the beginning and 5.0GB in the end (delta: -4.6GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2022-01-19 02:50:32,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 375.4MB. Free memory is still 335.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 195.15ms. Allocated memory was 375.4MB in the beginning and 455.1MB in the end (delta: 79.7MB). Free memory was 318.9MB in the beginning and 425.4MB in the end (delta: -106.5MB). Peak memory consumption was 10.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.70ms. Allocated memory is still 455.1MB. Free memory was 425.4MB in the beginning and 423.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.67ms. Allocated memory is still 455.1MB. Free memory was 423.3MB in the beginning and 421.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 406.31ms. Allocated memory is still 455.1MB. Free memory was 421.2MB in the beginning and 400.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 816438.84ms. Allocated memory was 455.1MB in the beginning and 8.6GB in the end (delta: 8.1GB). Free memory was 399.2MB in the beginning and 5.0GB in the end (delta: -4.6GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 152 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 152 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 152 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 816.3s, OverallIterations: 23, TraceHistogramMax: 3, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 161.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15003 SdHoareTripleChecker+Valid, 13.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15003 mSDsluCounter, 13191 SdHoareTripleChecker+Invalid, 11.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 15840 IncrementalHoareTripleChecker+Unchecked, 22263 mSDsCounter, 1997 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28294 IncrementalHoareTripleChecker+Invalid, 46131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1997 mSolverCounterUnsat, 655 mSDtfsCounter, 28294 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5723 GetRequests, 3851 SyntacticMatches, 68 SemanticMatches, 1804 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 79713 ImplicationChecksByTransitivity, 77.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17686occurred in iteration=19, InterpolantAutomatonStates: 1125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 133.2s InterpolantComputationTime, 4971 NumberOfCodeBlocks, 4911 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 7103 ConstructedInterpolants, 380 QuantifiedInterpolants, 138600 SizeOfPredicates, 443 NumberOfNonLiveVariables, 4783 ConjunctsInSsa, 833 ConjunctsInUnsatCore, 54 InterpolantComputations, 6 PerfectInterpolantSequences, 607/2075 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown