./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:55:32,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:55:32,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:55:32,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:55:32,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:55:32,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:55:32,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:55:32,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:55:32,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:55:32,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:55:32,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:55:32,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:55:32,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:55:32,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:55:32,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:55:32,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:55:32,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:55:32,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:55:32,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:55:32,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:55:32,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:55:32,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:55:32,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:55:32,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:55:32,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:55:32,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:55:32,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:55:32,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:55:32,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:55:32,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:55:32,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:55:32,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:55:32,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:55:32,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:55:32,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:55:32,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:55:32,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:55:32,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:55:32,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:55:32,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:55:32,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:55:32,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:55:32,997 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:55:32,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:55:32,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:55:32,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:55:32,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:55:32,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:55:32,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:55:33,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:55:33,004 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:55:33,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:55:33,004 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:55:33,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:55:33,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:55:33,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:55:33,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:55:33,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:55:33,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:55:33,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:55:33,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:55:33,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:55:33,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:55:33,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:55:33,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:55:33,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:55:33,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:55:33,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:55:33,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:55:33,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:55:33,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:55:33,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:55:33,007 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:55:33,007 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:55:33,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:55:33,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:55:33,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2021-12-14 16:55:33,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:55:33,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:55:33,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:55:33,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:55:33,281 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:55:33,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-12-14 16:55:33,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58bb7fbf4/4ee3609c2a9d4f6c9dbaee5b55688c03/FLAG56069aa1a [2021-12-14 16:55:33,692 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:55:33,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-12-14 16:55:33,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58bb7fbf4/4ee3609c2a9d4f6c9dbaee5b55688c03/FLAG56069aa1a [2021-12-14 16:55:34,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58bb7fbf4/4ee3609c2a9d4f6c9dbaee5b55688c03 [2021-12-14 16:55:34,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:55:34,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:55:34,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:55:34,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:55:34,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:55:34,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:55:34" (1/1) ... [2021-12-14 16:55:34,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fccc86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34, skipping insertion in model container [2021-12-14 16:55:34,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:55:34" (1/1) ... [2021-12-14 16:55:34,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:55:34,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:55:34,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2021-12-14 16:55:34,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:55:34,657 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:55:34,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2021-12-14 16:55:34,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:55:34,751 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:55:34,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34 WrapperNode [2021-12-14 16:55:34,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:55:34,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:55:34,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:55:34,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:55:34,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34" (1/1) ... [2021-12-14 16:55:34,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34" (1/1) ... [2021-12-14 16:55:34,860 INFO L137 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 232 [2021-12-14 16:55:34,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:55:34,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:55:34,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:55:34,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:55:34,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34" (1/1) ... [2021-12-14 16:55:34,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34" (1/1) ... [2021-12-14 16:55:34,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34" (1/1) ... [2021-12-14 16:55:34,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34" (1/1) ... [2021-12-14 16:55:34,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34" (1/1) ... [2021-12-14 16:55:34,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34" (1/1) ... [2021-12-14 16:55:34,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34" (1/1) ... [2021-12-14 16:55:34,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:55:34,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:55:34,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:55:34,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:55:34,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34" (1/1) ... [2021-12-14 16:55:34,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:55:34,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:55:34,948 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) [2021-12-14 16:55:34,967 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 [2021-12-14 16:55:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:55:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 16:55:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 16:55:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 16:55:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-14 16:55:35,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-14 16:55:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-14 16:55:35,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-14 16:55:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-14 16:55:35,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-14 16:55:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:55:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-14 16:55:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-14 16:55:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 16:55:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:55:35,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:55:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 16:55:35,020 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-14 16:55:35,155 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:55:35,156 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:55:35,675 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:55:35,781 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:55:35,789 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-14 16:55:35,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:55:35 BoogieIcfgContainer [2021-12-14 16:55:35,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:55:35,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:55:35,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:55:35,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:55:35,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:55:34" (1/3) ... [2021-12-14 16:55:35,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697ae758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:55:35, skipping insertion in model container [2021-12-14 16:55:35,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:55:34" (2/3) ... [2021-12-14 16:55:35,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697ae758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:55:35, skipping insertion in model container [2021-12-14 16:55:35,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:55:35" (3/3) ... [2021-12-14 16:55:35,806 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2021-12-14 16:55:35,811 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-14 16:55:35,811 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:55:35,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 16:55:35,812 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-14 16:55:35,843 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,844 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,844 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,844 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,845 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,845 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,845 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,846 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,847 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,848 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,848 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,848 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,850 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,851 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,851 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,851 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,852 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,852 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,860 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,860 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,860 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,860 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,860 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,860 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,860 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,861 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,861 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,861 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,861 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,861 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,861 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,861 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,862 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,862 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,862 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,862 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,862 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,862 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,862 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,863 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,863 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,863 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,863 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,863 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,863 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,863 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,864 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,864 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,864 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,864 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,864 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,864 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,864 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,865 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,869 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,869 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,869 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,870 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,870 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,870 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,870 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,871 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,871 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:55:35,881 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-14 16:55:35,930 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:55:35,935 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=true, 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 [2021-12-14 16:55:35,935 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-14 16:55:36,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 298 places, 315 transitions, 654 flow [2021-12-14 16:55:36,210 INFO L129 PetriNetUnfolder]: 27/312 cut-off events. [2021-12-14 16:55:36,233 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-14 16:55:36,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 312 events. 27/312 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 205 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 244. Up to 3 conditions per place. [2021-12-14 16:55:36,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 315 transitions, 654 flow [2021-12-14 16:55:36,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 301 transitions, 620 flow [2021-12-14 16:55:36,397 INFO L129 PetriNetUnfolder]: 27/300 cut-off events. [2021-12-14 16:55:36,397 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-14 16:55:36,398 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:55:36,399 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:55:36,400 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:55:36,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:55:36,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1810646857, now seen corresponding path program 1 times [2021-12-14 16:55:36,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:55:36,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201263550] [2021-12-14 16:55:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:36,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:55:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:55:36,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:55:36,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201263550] [2021-12-14 16:55:36,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201263550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:55:36,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:55:36,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:55:36,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515353019] [2021-12-14 16:55:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:55:36,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:55:36,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:55:36,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:55:36,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:55:36,944 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 315 [2021-12-14 16:55:36,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 301 transitions, 620 flow. Second operand has 2 states, 2 states have (on average 293.0) internal successors, (586), 2 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:36,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:55:36,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 315 [2021-12-14 16:55:36,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:55:37,092 INFO L129 PetriNetUnfolder]: 22/329 cut-off events. [2021-12-14 16:55:37,099 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2021-12-14 16:55:37,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 329 events. 22/329 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 383 event pairs, 7 based on Foata normal form. 36/338 useless extension candidates. Maximal degree in co-relation 233. Up to 28 conditions per place. [2021-12-14 16:55:37,104 INFO L132 encePairwiseOnDemand]: 297/315 looper letters, 8 selfloop transitions, 0 changer transitions 12/283 dead transitions. [2021-12-14 16:55:37,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 283 transitions, 600 flow [2021-12-14 16:55:37,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:55:37,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-14 16:55:37,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 602 transitions. [2021-12-14 16:55:37,142 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2021-12-14 16:55:37,146 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 602 transitions. [2021-12-14 16:55:37,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 602 transitions. [2021-12-14 16:55:37,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:55:37,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 602 transitions. [2021-12-14 16:55:37,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 301.0) internal successors, (602), 2 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:37,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:37,167 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:37,169 INFO L186 Difference]: Start difference. First operand has 284 places, 301 transitions, 620 flow. Second operand 2 states and 602 transitions. [2021-12-14 16:55:37,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 283 transitions, 600 flow [2021-12-14 16:55:37,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 283 transitions, 588 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-14 16:55:37,184 INFO L242 Difference]: Finished difference. Result has 279 places, 271 transitions, 548 flow [2021-12-14 16:55:37,186 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=548, PETRI_PLACES=279, PETRI_TRANSITIONS=271} [2021-12-14 16:55:37,189 INFO L334 CegarLoopForPetriNet]: 284 programPoint places, -5 predicate places. [2021-12-14 16:55:37,190 INFO L470 AbstractCegarLoop]: Abstraction has has 279 places, 271 transitions, 548 flow [2021-12-14 16:55:37,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 293.0) internal successors, (586), 2 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:37,191 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:55:37,191 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:55:37,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:55:37,192 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:55:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:55:37,193 INFO L85 PathProgramCache]: Analyzing trace with hash 759378185, now seen corresponding path program 1 times [2021-12-14 16:55:37,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:55:37,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824531614] [2021-12-14 16:55:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:37,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:55:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:55:37,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:55:37,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824531614] [2021-12-14 16:55:37,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824531614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:55:37,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:55:37,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:55:37,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133371260] [2021-12-14 16:55:37,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:55:37,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:55:37,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:55:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:55:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:55:37,602 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 315 [2021-12-14 16:55:37,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 271 transitions, 548 flow. Second operand has 8 states, 8 states have (on average 199.625) internal successors, (1597), 8 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:37,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:55:37,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 315 [2021-12-14 16:55:37,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:55:38,179 INFO L129 PetriNetUnfolder]: 202/783 cut-off events. [2021-12-14 16:55:38,186 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-12-14 16:55:38,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1157 conditions, 783 events. 202/783 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3236 event pairs, 103 based on Foata normal form. 0/638 useless extension candidates. Maximal degree in co-relation 1154. Up to 333 conditions per place. [2021-12-14 16:55:38,191 INFO L132 encePairwiseOnDemand]: 297/315 looper letters, 91 selfloop transitions, 15 changer transitions 0/283 dead transitions. [2021-12-14 16:55:38,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 283 transitions, 784 flow [2021-12-14 16:55:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 16:55:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-14 16:55:38,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1629 transitions. [2021-12-14 16:55:38,197 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6464285714285715 [2021-12-14 16:55:38,197 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1629 transitions. [2021-12-14 16:55:38,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1629 transitions. [2021-12-14 16:55:38,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:55:38,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1629 transitions. [2021-12-14 16:55:38,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 203.625) internal successors, (1629), 8 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:38,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:38,220 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:38,220 INFO L186 Difference]: Start difference. First operand has 279 places, 271 transitions, 548 flow. Second operand 8 states and 1629 transitions. [2021-12-14 16:55:38,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 283 transitions, 784 flow [2021-12-14 16:55:38,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 283 transitions, 784 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-14 16:55:38,228 INFO L242 Difference]: Finished difference. Result has 275 places, 274 transitions, 602 flow [2021-12-14 16:55:38,229 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=602, PETRI_PLACES=275, PETRI_TRANSITIONS=274} [2021-12-14 16:55:38,230 INFO L334 CegarLoopForPetriNet]: 284 programPoint places, -9 predicate places. [2021-12-14 16:55:38,230 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 274 transitions, 602 flow [2021-12-14 16:55:38,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 199.625) internal successors, (1597), 8 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:38,231 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:55:38,231 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:55:38,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:55:38,231 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:55:38,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:55:38,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1657129582, now seen corresponding path program 1 times [2021-12-14 16:55:38,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:55:38,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435966998] [2021-12-14 16:55:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:38,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:55:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 16:55:39,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:55:39,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435966998] [2021-12-14 16:55:39,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435966998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:55:39,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:55:39,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-14 16:55:39,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570021165] [2021-12-14 16:55:39,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:55:39,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-14 16:55:39,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:55:39,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-14 16:55:39,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2021-12-14 16:55:39,014 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 315 [2021-12-14 16:55:39,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 274 transitions, 602 flow. Second operand has 21 states, 21 states have (on average 174.85714285714286) internal successors, (3672), 21 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:39,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:55:39,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 315 [2021-12-14 16:55:39,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:55:41,120 INFO L129 PetriNetUnfolder]: 765/2564 cut-off events. [2021-12-14 16:55:41,124 INFO L130 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2021-12-14 16:55:41,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3691 conditions, 2564 events. 765/2564 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 18228 event pairs, 101 based on Foata normal form. 2/2208 useless extension candidates. Maximal degree in co-relation 3686. Up to 282 conditions per place. [2021-12-14 16:55:41,174 INFO L132 encePairwiseOnDemand]: 285/315 looper letters, 146 selfloop transitions, 31 changer transitions 20/357 dead transitions. [2021-12-14 16:55:41,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 357 transitions, 1173 flow [2021-12-14 16:55:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-14 16:55:41,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-12-14 16:55:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5638 transitions. [2021-12-14 16:55:41,203 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5593253968253968 [2021-12-14 16:55:41,204 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5638 transitions. [2021-12-14 16:55:41,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5638 transitions. [2021-12-14 16:55:41,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:55:41,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5638 transitions. [2021-12-14 16:55:41,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 176.1875) internal successors, (5638), 32 states have internal predecessors, (5638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:41,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 315.0) internal successors, (10395), 33 states have internal predecessors, (10395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:41,229 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 315.0) internal successors, (10395), 33 states have internal predecessors, (10395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:41,229 INFO L186 Difference]: Start difference. First operand has 275 places, 274 transitions, 602 flow. Second operand 32 states and 5638 transitions. [2021-12-14 16:55:41,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 357 transitions, 1173 flow [2021-12-14 16:55:41,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 357 transitions, 1149 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-14 16:55:41,235 INFO L242 Difference]: Finished difference. Result has 307 places, 285 transitions, 703 flow [2021-12-14 16:55:41,236 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=703, PETRI_PLACES=307, PETRI_TRANSITIONS=285} [2021-12-14 16:55:41,238 INFO L334 CegarLoopForPetriNet]: 284 programPoint places, 23 predicate places. [2021-12-14 16:55:41,238 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 285 transitions, 703 flow [2021-12-14 16:55:41,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 174.85714285714286) internal successors, (3672), 21 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:41,241 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:55:41,241 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:55:41,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 16:55:41,242 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:55:41,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:55:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1010837465, now seen corresponding path program 1 times [2021-12-14 16:55:41,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:55:41,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684810304] [2021-12-14 16:55:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:41,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:55:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:55:41,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:55:41,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684810304] [2021-12-14 16:55:41,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684810304] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:55:41,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837482248] [2021-12-14 16:55:41,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:41,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:55:41,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:55:41,425 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) [2021-12-14 16:55:41,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 16:55:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:41,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 16:55:41,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:55:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:55:42,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:55:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:55:42,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837482248] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:55:42,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 16:55:42,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2021-12-14 16:55:42,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217215703] [2021-12-14 16:55:42,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 16:55:42,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 16:55:42,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:55:42,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 16:55:42,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-12-14 16:55:42,795 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 315 [2021-12-14 16:55:42,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 285 transitions, 703 flow. Second operand has 19 states, 19 states have (on average 240.26315789473685) internal successors, (4565), 19 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:42,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:55:42,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 315 [2021-12-14 16:55:42,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:55:43,906 INFO L129 PetriNetUnfolder]: 1489/3795 cut-off events. [2021-12-14 16:55:43,906 INFO L130 PetriNetUnfolder]: For 445/539 co-relation queries the response was YES. [2021-12-14 16:55:43,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6396 conditions, 3795 events. 1489/3795 cut-off events. For 445/539 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 24274 event pairs, 585 based on Foata normal form. 6/2910 useless extension candidates. Maximal degree in co-relation 6384. Up to 1092 conditions per place. [2021-12-14 16:55:43,952 INFO L132 encePairwiseOnDemand]: 286/315 looper letters, 133 selfloop transitions, 54 changer transitions 0/407 dead transitions. [2021-12-14 16:55:43,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 407 transitions, 1375 flow [2021-12-14 16:55:43,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 16:55:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-14 16:55:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4907 transitions. [2021-12-14 16:55:43,977 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7788888888888889 [2021-12-14 16:55:43,977 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4907 transitions. [2021-12-14 16:55:43,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4907 transitions. [2021-12-14 16:55:43,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:55:43,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4907 transitions. [2021-12-14 16:55:44,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 245.35) internal successors, (4907), 20 states have internal predecessors, (4907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:44,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 315.0) internal successors, (6615), 21 states have internal predecessors, (6615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:44,032 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 315.0) internal successors, (6615), 21 states have internal predecessors, (6615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:44,033 INFO L186 Difference]: Start difference. First operand has 307 places, 285 transitions, 703 flow. Second operand 20 states and 4907 transitions. [2021-12-14 16:55:44,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 407 transitions, 1375 flow [2021-12-14 16:55:44,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 407 transitions, 1331 flow, removed 5 selfloop flow, removed 21 redundant places. [2021-12-14 16:55:44,096 INFO L242 Difference]: Finished difference. Result has 307 places, 322 transitions, 974 flow [2021-12-14 16:55:44,097 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=974, PETRI_PLACES=307, PETRI_TRANSITIONS=322} [2021-12-14 16:55:44,098 INFO L334 CegarLoopForPetriNet]: 284 programPoint places, 23 predicate places. [2021-12-14 16:55:44,099 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 322 transitions, 974 flow [2021-12-14 16:55:44,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 240.26315789473685) internal successors, (4565), 19 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:44,112 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:55:44,113 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:55:44,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 16:55:44,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:55:44,337 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:55:44,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:55:44,337 INFO L85 PathProgramCache]: Analyzing trace with hash -378664297, now seen corresponding path program 1 times [2021-12-14 16:55:44,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:55:44,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164610978] [2021-12-14 16:55:44,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:44,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:55:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:55:44,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:55:44,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164610978] [2021-12-14 16:55:44,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164610978] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:55:44,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283280220] [2021-12-14 16:55:44,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:44,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:55:44,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:55:44,586 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) [2021-12-14 16:55:44,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 16:55:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:44,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 16:55:44,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:55:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:55:45,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:55:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:55:45,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283280220] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:55:45,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 16:55:45,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2021-12-14 16:55:45,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185719038] [2021-12-14 16:55:45,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 16:55:45,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 16:55:45,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:55:45,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 16:55:45,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-12-14 16:55:45,945 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 315 [2021-12-14 16:55:45,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 322 transitions, 974 flow. Second operand has 19 states, 19 states have (on average 237.31578947368422) internal successors, (4509), 19 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:45,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:55:45,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 315 [2021-12-14 16:55:45,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:55:46,862 INFO L129 PetriNetUnfolder]: 1561/3928 cut-off events. [2021-12-14 16:55:46,863 INFO L130 PetriNetUnfolder]: For 1471/1592 co-relation queries the response was YES. [2021-12-14 16:55:46,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7701 conditions, 3928 events. 1561/3928 cut-off events. For 1471/1592 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 26013 event pairs, 773 based on Foata normal form. 35/3331 useless extension candidates. Maximal degree in co-relation 7683. Up to 1568 conditions per place. [2021-12-14 16:55:46,896 INFO L132 encePairwiseOnDemand]: 286/315 looper letters, 72 selfloop transitions, 30 changer transitions 89/408 dead transitions. [2021-12-14 16:55:46,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 408 transitions, 1642 flow [2021-12-14 16:55:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 16:55:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-14 16:55:46,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4847 transitions. [2021-12-14 16:55:46,905 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7693650793650794 [2021-12-14 16:55:46,905 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4847 transitions. [2021-12-14 16:55:46,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4847 transitions. [2021-12-14 16:55:46,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:55:46,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4847 transitions. [2021-12-14 16:55:46,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 242.35) internal successors, (4847), 20 states have internal predecessors, (4847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:46,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 315.0) internal successors, (6615), 21 states have internal predecessors, (6615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:46,957 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 315.0) internal successors, (6615), 21 states have internal predecessors, (6615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:46,957 INFO L186 Difference]: Start difference. First operand has 307 places, 322 transitions, 974 flow. Second operand 20 states and 4847 transitions. [2021-12-14 16:55:46,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 408 transitions, 1642 flow [2021-12-14 16:55:46,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 408 transitions, 1605 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-12-14 16:55:46,968 INFO L242 Difference]: Finished difference. Result has 327 places, 297 transitions, 872 flow [2021-12-14 16:55:46,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=872, PETRI_PLACES=327, PETRI_TRANSITIONS=297} [2021-12-14 16:55:46,982 INFO L334 CegarLoopForPetriNet]: 284 programPoint places, 43 predicate places. [2021-12-14 16:55:46,982 INFO L470 AbstractCegarLoop]: Abstraction has has 327 places, 297 transitions, 872 flow [2021-12-14 16:55:46,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 237.31578947368422) internal successors, (4509), 19 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:46,983 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:55:46,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:55:47,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 16:55:47,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:55:47,186 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:55:47,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:55:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash 257040978, now seen corresponding path program 2 times [2021-12-14 16:55:47,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:55:47,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921006191] [2021-12-14 16:55:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:47,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:55:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-14 16:55:47,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:55:47,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921006191] [2021-12-14 16:55:47,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921006191] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:55:47,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126905836] [2021-12-14 16:55:47,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 16:55:47,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:55:47,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:55:47,307 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) [2021-12-14 16:55:47,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 16:55:47,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 16:55:47,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:55:47,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 16:55:47,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:55:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-14 16:55:47,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:55:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-14 16:55:48,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126905836] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 16:55:48,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-14 16:55:48,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2021-12-14 16:55:48,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675647778] [2021-12-14 16:55:48,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:55:48,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:55:48,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:55:48,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:55:48,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-12-14 16:55:48,470 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 315 [2021-12-14 16:55:48,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 297 transitions, 872 flow. Second operand has 9 states, 9 states have (on average 243.55555555555554) internal successors, (2192), 9 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:48,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:55:48,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 315 [2021-12-14 16:55:48,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:55:48,869 INFO L129 PetriNetUnfolder]: 826/1975 cut-off events. [2021-12-14 16:55:48,870 INFO L130 PetriNetUnfolder]: For 1591/1642 co-relation queries the response was YES. [2021-12-14 16:55:48,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 1975 events. 826/1975 cut-off events. For 1591/1642 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 11644 event pairs, 220 based on Foata normal form. 2/1706 useless extension candidates. Maximal degree in co-relation 4604. Up to 701 conditions per place. [2021-12-14 16:55:48,884 INFO L132 encePairwiseOnDemand]: 304/315 looper letters, 78 selfloop transitions, 10 changer transitions 0/309 dead transitions. [2021-12-14 16:55:48,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 309 transitions, 1100 flow [2021-12-14 16:55:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 16:55:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-14 16:55:48,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2444 transitions. [2021-12-14 16:55:48,889 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7758730158730158 [2021-12-14 16:55:48,889 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2444 transitions. [2021-12-14 16:55:48,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2444 transitions. [2021-12-14 16:55:48,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:55:48,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2444 transitions. [2021-12-14 16:55:48,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 244.4) internal successors, (2444), 10 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:48,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:48,898 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:48,899 INFO L186 Difference]: Start difference. First operand has 327 places, 297 transitions, 872 flow. Second operand 10 states and 2444 transitions. [2021-12-14 16:55:48,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 309 transitions, 1100 flow [2021-12-14 16:55:48,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 309 transitions, 1019 flow, removed 17 selfloop flow, removed 18 redundant places. [2021-12-14 16:55:48,912 INFO L242 Difference]: Finished difference. Result has 303 places, 299 transitions, 840 flow [2021-12-14 16:55:48,913 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=840, PETRI_PLACES=303, PETRI_TRANSITIONS=299} [2021-12-14 16:55:48,913 INFO L334 CegarLoopForPetriNet]: 284 programPoint places, 19 predicate places. [2021-12-14 16:55:48,914 INFO L470 AbstractCegarLoop]: Abstraction has has 303 places, 299 transitions, 840 flow [2021-12-14 16:55:48,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 243.55555555555554) internal successors, (2192), 9 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:48,914 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:55:48,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:55:48,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 16:55:49,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:55:49,136 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:55:49,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:55:49,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1172583244, now seen corresponding path program 1 times [2021-12-14 16:55:49,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:55:49,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345370481] [2021-12-14 16:55:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:49,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:55:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-14 16:55:49,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:55:49,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345370481] [2021-12-14 16:55:49,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345370481] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:55:49,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776158225] [2021-12-14 16:55:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:49,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:55:49,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:55:49,280 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) [2021-12-14 16:55:49,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 16:55:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:49,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 16:55:49,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:55:49,959 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-14 16:55:49,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:55:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-14 16:55:50,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776158225] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 16:55:50,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-14 16:55:50,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2021-12-14 16:55:50,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50105060] [2021-12-14 16:55:50,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:55:50,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:55:50,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:55:50,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:55:50,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-12-14 16:55:50,523 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 315 [2021-12-14 16:55:50,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 299 transitions, 840 flow. Second operand has 9 states, 9 states have (on average 239.77777777777777) internal successors, (2158), 9 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:50,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:55:50,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 315 [2021-12-14 16:55:50,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:55:51,039 INFO L129 PetriNetUnfolder]: 1352/3191 cut-off events. [2021-12-14 16:55:51,039 INFO L130 PetriNetUnfolder]: For 1676/2026 co-relation queries the response was YES. [2021-12-14 16:55:51,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6975 conditions, 3191 events. 1352/3191 cut-off events. For 1676/2026 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 21732 event pairs, 315 based on Foata normal form. 379/3354 useless extension candidates. Maximal degree in co-relation 6959. Up to 1235 conditions per place. [2021-12-14 16:55:51,057 INFO L132 encePairwiseOnDemand]: 304/315 looper letters, 85 selfloop transitions, 10 changer transitions 0/312 dead transitions. [2021-12-14 16:55:51,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 312 transitions, 1080 flow [2021-12-14 16:55:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 16:55:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-14 16:55:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2409 transitions. [2021-12-14 16:55:51,061 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7647619047619048 [2021-12-14 16:55:51,061 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2409 transitions. [2021-12-14 16:55:51,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2409 transitions. [2021-12-14 16:55:51,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:55:51,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2409 transitions. [2021-12-14 16:55:51,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 240.9) internal successors, (2409), 10 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:51,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:51,069 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:51,069 INFO L186 Difference]: Start difference. First operand has 303 places, 299 transitions, 840 flow. Second operand 10 states and 2409 transitions. [2021-12-14 16:55:51,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 312 transitions, 1080 flow [2021-12-14 16:55:51,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 312 transitions, 1069 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-12-14 16:55:51,077 INFO L242 Difference]: Finished difference. Result has 310 places, 300 transitions, 863 flow [2021-12-14 16:55:51,077 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=863, PETRI_PLACES=310, PETRI_TRANSITIONS=300} [2021-12-14 16:55:51,078 INFO L334 CegarLoopForPetriNet]: 284 programPoint places, 26 predicate places. [2021-12-14 16:55:51,078 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 300 transitions, 863 flow [2021-12-14 16:55:51,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 239.77777777777777) internal successors, (2158), 9 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:51,079 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:55:51,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:55:51,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 16:55:51,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:55:51,297 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:55:51,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:55:51,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2099191554, now seen corresponding path program 1 times [2021-12-14 16:55:51,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:55:51,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972202071] [2021-12-14 16:55:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:51,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:55:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:51,399 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-14 16:55:51,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:55:51,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972202071] [2021-12-14 16:55:51,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972202071] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:55:51,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865045292] [2021-12-14 16:55:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:51,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:55:51,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:55:51,402 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) [2021-12-14 16:55:51,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 16:55:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:51,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 16:55:51,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:55:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-14 16:55:52,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:55:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-14 16:55:52,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865045292] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 16:55:52,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-14 16:55:52,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2021-12-14 16:55:52,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031015650] [2021-12-14 16:55:52,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:55:52,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:55:52,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:55:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:55:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-12-14 16:55:52,566 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 315 [2021-12-14 16:55:52,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 300 transitions, 863 flow. Second operand has 9 states, 9 states have (on average 242.66666666666666) internal successors, (2184), 9 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:52,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:55:52,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 315 [2021-12-14 16:55:52,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:55:52,939 INFO L129 PetriNetUnfolder]: 778/1843 cut-off events. [2021-12-14 16:55:52,940 INFO L130 PetriNetUnfolder]: For 1532/1946 co-relation queries the response was YES. [2021-12-14 16:55:52,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4133 conditions, 1843 events. 778/1843 cut-off events. For 1532/1946 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10240 event pairs, 159 based on Foata normal form. 439/2097 useless extension candidates. Maximal degree in co-relation 4115. Up to 756 conditions per place. [2021-12-14 16:55:52,976 INFO L132 encePairwiseOnDemand]: 304/315 looper letters, 81 selfloop transitions, 10 changer transitions 0/309 dead transitions. [2021-12-14 16:55:52,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 309 transitions, 1077 flow [2021-12-14 16:55:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 16:55:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-14 16:55:52,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2435 transitions. [2021-12-14 16:55:52,982 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.773015873015873 [2021-12-14 16:55:52,982 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2435 transitions. [2021-12-14 16:55:52,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2435 transitions. [2021-12-14 16:55:52,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:55:52,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2435 transitions. [2021-12-14 16:55:52,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 243.5) internal successors, (2435), 10 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:53,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:53,002 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:53,002 INFO L186 Difference]: Start difference. First operand has 310 places, 300 transitions, 863 flow. Second operand 10 states and 2435 transitions. [2021-12-14 16:55:53,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 309 transitions, 1077 flow [2021-12-14 16:55:53,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 309 transitions, 1060 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-12-14 16:55:53,021 INFO L242 Difference]: Finished difference. Result has 312 places, 299 transitions, 871 flow [2021-12-14 16:55:53,022 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=871, PETRI_PLACES=312, PETRI_TRANSITIONS=299} [2021-12-14 16:55:53,024 INFO L334 CegarLoopForPetriNet]: 284 programPoint places, 28 predicate places. [2021-12-14 16:55:53,024 INFO L470 AbstractCegarLoop]: Abstraction has has 312 places, 299 transitions, 871 flow [2021-12-14 16:55:53,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 242.66666666666666) internal successors, (2184), 9 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:55:53,025 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:55:53,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:55:53,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 16:55:53,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:55:53,244 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:55:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:55:53,244 INFO L85 PathProgramCache]: Analyzing trace with hash -817599591, now seen corresponding path program 1 times [2021-12-14 16:55:53,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:55:53,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747692369] [2021-12-14 16:55:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:53,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:55:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-14 16:55:54,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:55:54,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747692369] [2021-12-14 16:55:54,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747692369] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:55:54,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379163123] [2021-12-14 16:55:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:55:54,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:55:54,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:55:54,947 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) [2021-12-14 16:55:54,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 16:55:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:55:55,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-14 16:55:55,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:55:55,599 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 16:55:55,600 INFO L388 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 29 treesize of output 25 [2021-12-14 16:55:58,547 INFO L354 Elim1Store]: treesize reduction 56, result has 45.6 percent of original size [2021-12-14 16:55:58,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 67 [2021-12-14 16:56:22,826 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 16:56:22,827 INFO L388 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 233 treesize of output 161 [2021-12-14 16:56:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-14 16:56:23,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:56:24,879 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_410 Int)) (or (< v_ArrVal_410 (let ((.cse0 (* |c_thread2Thread1of1ForFork0_~i~1#1| 4))) (+ (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset .cse0)) (select (select |c_#memory_int| c_~B~0.base) (+ c_~B~0.offset .cse0))))) (and (<= (+ c_~minb~0 c_~mina~0) c_~minc~0) (forall ((~C~0.offset Int) (~C~0.base Int)) (<= (+ c_~minb~0 c_~mina~0) (select (store (select |c_#memory_int| ~C~0.base) (+ ~C~0.offset (* |c_thread2Thread1of1ForFork0_~i~1#1| 4)) v_ArrVal_410) (+ ~C~0.offset 4))))))) is different from false [2021-12-14 16:56:25,308 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 16:56:25,308 INFO L388 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 48 treesize of output 116 [2021-12-14 16:56:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 1 not checked. [2021-12-14 16:56:26,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379163123] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:56:26,576 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 16:56:26,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 32, 29] total 87 [2021-12-14 16:56:26,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292922283] [2021-12-14 16:56:26,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 16:56:26,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-12-14 16:56:26,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:56:26,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-12-14 16:56:26,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=6927, Unknown=2, NotChecked=168, Total=7482 [2021-12-14 16:56:26,585 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 315 [2021-12-14 16:56:26,590 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 299 transitions, 871 flow. Second operand has 87 states, 87 states have (on average 110.11494252873563) internal successors, (9580), 87 states have internal predecessors, (9580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:56:26,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:56:26,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 315 [2021-12-14 16:56:26,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand