./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/loop-tiling-eq.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 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:06:25,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:06:25,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:06:25,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:06:25,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:06:25,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:06:25,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:06:25,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:06:25,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:06:25,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:06:25,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:06:25,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:06:25,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:06:25,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:06:25,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:06:26,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:06:26,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:06:26,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:06:26,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:06:26,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:06:26,009 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:06:26,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:06:26,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:06:26,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:06:26,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:06:26,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:06:26,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:06:26,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:06:26,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:06:26,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:06:26,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:06:26,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:06:26,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:06:26,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:06:26,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:06:26,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:06:26,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:06:26,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:06:26,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:06:26,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:06:26,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:06:26,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:06:26,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:06:26,052 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:06:26,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:06:26,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:06:26,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:06:26,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:06:26,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:06:26,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:06:26,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:06:26,055 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:06:26,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:06:26,055 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:06:26,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:06:26,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:06:26,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:06:26,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:06:26,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:06:26,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:06:26,056 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:06:26,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:06:26,057 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:06:26,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:06:26,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:06:26,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:06:26,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:06:26,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:06:26,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:06:26,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:06:26,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:06:26,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:06:26,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:06:26,059 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:06:26,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:06:26,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:06:26,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 [2022-07-13 22:06:26,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:06:26,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:06:26,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:06:26,253 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:06:26,254 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:06:26,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-07-13 22:06:26,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0761bfbe/2e6b6602108640f9b558331d7145b484/FLAGab1606dbb [2022-07-13 22:06:26,678 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:06:26,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-07-13 22:06:26,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0761bfbe/2e6b6602108640f9b558331d7145b484/FLAGab1606dbb [2022-07-13 22:06:26,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0761bfbe/2e6b6602108640f9b558331d7145b484 [2022-07-13 22:06:26,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:06:26,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:06:26,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:06:26,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:06:26,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:06:26,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:06:26" (1/1) ... [2022-07-13 22:06:26,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96cf5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26, skipping insertion in model container [2022-07-13 22:06:26,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:06:26" (1/1) ... [2022-07-13 22:06:26,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:06:26,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:06:26,851 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/loop-tiling-eq.wvr.c[2618,2631] [2022-07-13 22:06:26,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:06:26,860 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:06:26,874 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/loop-tiling-eq.wvr.c[2618,2631] [2022-07-13 22:06:26,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:06:26,885 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:06:26,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26 WrapperNode [2022-07-13 22:06:26,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:06:26,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:06:26,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:06:26,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:06:26,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26" (1/1) ... [2022-07-13 22:06:26,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26" (1/1) ... [2022-07-13 22:06:26,924 INFO L137 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 186 [2022-07-13 22:06:26,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:06:26,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:06:26,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:06:26,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:06:26,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26" (1/1) ... [2022-07-13 22:06:26,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26" (1/1) ... [2022-07-13 22:06:26,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26" (1/1) ... [2022-07-13 22:06:26,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26" (1/1) ... [2022-07-13 22:06:26,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26" (1/1) ... [2022-07-13 22:06:26,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26" (1/1) ... [2022-07-13 22:06:26,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26" (1/1) ... [2022-07-13 22:06:26,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:06:26,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:06:26,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:06:26,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:06:26,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26" (1/1) ... [2022-07-13 22:06:26,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:06:26,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:06:26,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:06:27,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:06:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:06:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:06:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:06:27,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:06:27,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:06:27,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:06:27,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:06:27,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:06:27,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:06:27,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:06:27,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:06:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:06:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:06:27,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:06:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:06:27,035 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:06:27,094 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:06:27,095 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:06:27,389 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:06:27,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:06:27,398 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-13 22:06:27,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:06:27 BoogieIcfgContainer [2022-07-13 22:06:27,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:06:27,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:06:27,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:06:27,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:06:27,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:06:26" (1/3) ... [2022-07-13 22:06:27,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee566f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:06:27, skipping insertion in model container [2022-07-13 22:06:27,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:26" (2/3) ... [2022-07-13 22:06:27,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee566f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:06:27, skipping insertion in model container [2022-07-13 22:06:27,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:06:27" (3/3) ... [2022-07-13 22:06:27,411 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2022-07-13 22:06:27,414 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:06:27,422 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:06:27,422 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:06:27,422 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:06:27,481 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 22:06:27,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 260 places, 279 transitions, 574 flow [2022-07-13 22:06:27,571 INFO L129 PetriNetUnfolder]: 26/277 cut-off events. [2022-07-13 22:06:27,571 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:06:27,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 277 events. 26/277 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 277 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 211. Up to 2 conditions per place. [2022-07-13 22:06:27,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 279 transitions, 574 flow [2022-07-13 22:06:27,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 268 transitions, 548 flow [2022-07-13 22:06:27,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:06:27,593 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@d88fdbb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@62ce67e2 [2022-07-13 22:06:27,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 22:06:27,648 INFO L129 PetriNetUnfolder]: 26/267 cut-off events. [2022-07-13 22:06:27,648 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:06:27,648 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:27,649 INFO L200 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] [2022-07-13 22:06:27,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:27,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:27,652 INFO L85 PathProgramCache]: Analyzing trace with hash -338409815, now seen corresponding path program 1 times [2022-07-13 22:06:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:27,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889794922] [2022-07-13 22:06:27,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:27,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:27,764 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:06:27,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150339292] [2022-07-13 22:06:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:27,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:06:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:06:27,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:06:27,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:06:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:27,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:06:27,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:06:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:28,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:06:28,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:28,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889794922] [2022-07-13 22:06:28,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:06:28,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150339292] [2022-07-13 22:06:28,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150339292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:28,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:28,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:06:28,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149606282] [2022-07-13 22:06:28,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:28,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:06:28,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:28,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:06:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:06:28,119 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 279 [2022-07-13 22:06:28,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 268 transitions, 548 flow. Second operand has 6 states, 6 states have (on average 190.66666666666666) internal successors, (1144), 6 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:28,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:28,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 279 [2022-07-13 22:06:28,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:28,304 INFO L129 PetriNetUnfolder]: 21/392 cut-off events. [2022-07-13 22:06:28,305 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-07-13 22:06:28,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 392 events. 21/392 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 721 event pairs, 4 based on Foata normal form. 31/387 useless extension candidates. Maximal degree in co-relation 336. Up to 66 conditions per place. [2022-07-13 22:06:28,308 INFO L132 encePairwiseOnDemand]: 240/279 looper letters, 73 selfloop transitions, 4 changer transitions 25/274 dead transitions. [2022-07-13 22:06:28,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 274 transitions, 776 flow [2022-07-13 22:06:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:06:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:06:28,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1950 transitions. [2022-07-13 22:06:28,321 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6989247311827957 [2022-07-13 22:06:28,321 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1950 transitions. [2022-07-13 22:06:28,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1950 transitions. [2022-07-13 22:06:28,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:28,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1950 transitions. [2022-07-13 22:06:28,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 195.0) internal successors, (1950), 10 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:28,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 279.0) internal successors, (3069), 11 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:28,338 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 279.0) internal successors, (3069), 11 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:28,339 INFO L186 Difference]: Start difference. First operand has 249 places, 268 transitions, 548 flow. Second operand 10 states and 1950 transitions. [2022-07-13 22:06:28,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 274 transitions, 776 flow [2022-07-13 22:06:28,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 274 transitions, 760 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:06:28,347 INFO L242 Difference]: Finished difference. Result has 258 places, 238 transitions, 500 flow [2022-07-13 22:06:28,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=500, PETRI_PLACES=258, PETRI_TRANSITIONS=238} [2022-07-13 22:06:28,359 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 9 predicate places. [2022-07-13 22:06:28,359 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 238 transitions, 500 flow [2022-07-13 22:06:28,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.66666666666666) internal successors, (1144), 6 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:28,360 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:28,361 INFO L200 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] [2022-07-13 22:06:28,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 22:06:28,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-13 22:06:28,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:28,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:28,579 INFO L85 PathProgramCache]: Analyzing trace with hash 625212876, now seen corresponding path program 1 times [2022-07-13 22:06:28,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:28,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094865998] [2022-07-13 22:06:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:28,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:28,620 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:06:28,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634999988] [2022-07-13 22:06:28,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:28,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:06:28,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:06:28,626 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:06:28,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:06:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:28,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 22:06:28,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:06:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:28,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:06:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:28,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:28,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094865998] [2022-07-13 22:06:28,908 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:06:28,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634999988] [2022-07-13 22:06:28,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634999988] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:06:28,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:06:28,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-07-13 22:06:28,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716691008] [2022-07-13 22:06:28,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:06:28,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:06:28,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:28,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:06:28,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:06:28,914 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 279 [2022-07-13 22:06:28,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 238 transitions, 500 flow. Second operand has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:28,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:28,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 279 [2022-07-13 22:06:28,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:29,000 INFO L129 PetriNetUnfolder]: 23/332 cut-off events. [2022-07-13 22:06:29,001 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-07-13 22:06:29,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 332 events. 23/332 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 611 event pairs, 2 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 386. Up to 17 conditions per place. [2022-07-13 22:06:29,002 INFO L132 encePairwiseOnDemand]: 271/279 looper letters, 29 selfloop transitions, 8 changer transitions 0/248 dead transitions. [2022-07-13 22:06:29,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 248 transitions, 596 flow [2022-07-13 22:06:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:06:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:06:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1669 transitions. [2022-07-13 22:06:29,005 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8545826932923707 [2022-07-13 22:06:29,005 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1669 transitions. [2022-07-13 22:06:29,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1669 transitions. [2022-07-13 22:06:29,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:29,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1669 transitions. [2022-07-13 22:06:29,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.42857142857142) internal successors, (1669), 7 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,012 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,012 INFO L186 Difference]: Start difference. First operand has 258 places, 238 transitions, 500 flow. Second operand 7 states and 1669 transitions. [2022-07-13 22:06:29,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 248 transitions, 596 flow [2022-07-13 22:06:29,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 248 transitions, 584 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-13 22:06:29,016 INFO L242 Difference]: Finished difference. Result has 244 places, 241 transitions, 527 flow [2022-07-13 22:06:29,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=244, PETRI_TRANSITIONS=241} [2022-07-13 22:06:29,017 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, -5 predicate places. [2022-07-13 22:06:29,018 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 241 transitions, 527 flow [2022-07-13 22:06:29,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,018 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:29,019 INFO L200 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] [2022-07-13 22:06:29,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 22:06:29,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-13 22:06:29,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:29,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1128719776, now seen corresponding path program 1 times [2022-07-13 22:06:29,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:29,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120223001] [2022-07-13 22:06:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:29,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:29,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:06:29,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019348034] [2022-07-13 22:06:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:29,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:06:29,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:06:29,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:06:29,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:06:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:29,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:06:29,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:06:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:06:29,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:06:29,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:29,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120223001] [2022-07-13 22:06:29,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:06:29,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019348034] [2022-07-13 22:06:29,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019348034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:29,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:29,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:06:29,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657836825] [2022-07-13 22:06:29,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:29,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:06:29,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:29,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:06:29,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:06:29,470 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 279 [2022-07-13 22:06:29,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 241 transitions, 527 flow. Second operand has 8 states, 8 states have (on average 167.375) internal successors, (1339), 8 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:29,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 279 [2022-07-13 22:06:29,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:29,735 INFO L129 PetriNetUnfolder]: 51/627 cut-off events. [2022-07-13 22:06:29,735 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-07-13 22:06:29,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 627 events. 51/627 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2157 event pairs, 18 based on Foata normal form. 2/603 useless extension candidates. Maximal degree in co-relation 526. Up to 66 conditions per place. [2022-07-13 22:06:29,738 INFO L132 encePairwiseOnDemand]: 268/279 looper letters, 88 selfloop transitions, 7 changer transitions 46/293 dead transitions. [2022-07-13 22:06:29,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 293 transitions, 921 flow [2022-07-13 22:06:29,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:06:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 22:06:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2197 transitions. [2022-07-13 22:06:29,742 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6057347670250897 [2022-07-13 22:06:29,742 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2197 transitions. [2022-07-13 22:06:29,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2197 transitions. [2022-07-13 22:06:29,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:29,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2197 transitions. [2022-07-13 22:06:29,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 279.0) internal successors, (3906), 14 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,751 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 279.0) internal successors, (3906), 14 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,751 INFO L186 Difference]: Start difference. First operand has 244 places, 241 transitions, 527 flow. Second operand 13 states and 2197 transitions. [2022-07-13 22:06:29,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 293 transitions, 921 flow [2022-07-13 22:06:29,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 293 transitions, 920 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:06:29,756 INFO L242 Difference]: Finished difference. Result has 264 places, 244 transitions, 581 flow [2022-07-13 22:06:29,756 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=581, PETRI_PLACES=264, PETRI_TRANSITIONS=244} [2022-07-13 22:06:29,756 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 15 predicate places. [2022-07-13 22:06:29,757 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 244 transitions, 581 flow [2022-07-13 22:06:29,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 167.375) internal successors, (1339), 8 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,757 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:29,757 INFO L200 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] [2022-07-13 22:06:29,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:06:29,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:06:29,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:29,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:29,976 INFO L85 PathProgramCache]: Analyzing trace with hash -703165043, now seen corresponding path program 1 times [2022-07-13 22:06:29,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:29,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662619960] [2022-07-13 22:06:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:29,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:30,006 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:06:30,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543270870] [2022-07-13 22:06:30,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:30,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:06:30,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:06:30,011 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:06:30,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:06:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:30,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:06:30,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:06:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:30,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:06:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:30,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:30,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662619960] [2022-07-13 22:06:30,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:06:30,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543270870] [2022-07-13 22:06:30,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543270870] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:06:30,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:06:30,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2022-07-13 22:06:30,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364159289] [2022-07-13 22:06:30,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:30,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:06:30,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:06:30,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:06:30,332 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 279 [2022-07-13 22:06:30,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 244 transitions, 581 flow. Second operand has 7 states, 7 states have (on average 210.85714285714286) internal successors, (1476), 7 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:30,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:30,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 279 [2022-07-13 22:06:30,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:30,441 INFO L129 PetriNetUnfolder]: 26/349 cut-off events. [2022-07-13 22:06:30,442 INFO L130 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-07-13 22:06:30,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 349 events. 26/349 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 572 event pairs, 4 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 505. Up to 43 conditions per place. [2022-07-13 22:06:30,443 INFO L132 encePairwiseOnDemand]: 267/279 looper letters, 54 selfloop transitions, 11 changer transitions 0/252 dead transitions. [2022-07-13 22:06:30,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 252 transitions, 735 flow [2022-07-13 22:06:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:06:30,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:06:30,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1910 transitions. [2022-07-13 22:06:30,447 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7606531262445241 [2022-07-13 22:06:30,447 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1910 transitions. [2022-07-13 22:06:30,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1910 transitions. [2022-07-13 22:06:30,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:30,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1910 transitions. [2022-07-13 22:06:30,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 212.22222222222223) internal successors, (1910), 9 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:30,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:30,453 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:30,453 INFO L186 Difference]: Start difference. First operand has 264 places, 244 transitions, 581 flow. Second operand 9 states and 1910 transitions. [2022-07-13 22:06:30,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 252 transitions, 735 flow [2022-07-13 22:06:30,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 252 transitions, 711 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-07-13 22:06:30,457 INFO L242 Difference]: Finished difference. Result has 262 places, 248 transitions, 617 flow [2022-07-13 22:06:30,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=617, PETRI_PLACES=262, PETRI_TRANSITIONS=248} [2022-07-13 22:06:30,458 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 13 predicate places. [2022-07-13 22:06:30,459 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 248 transitions, 617 flow [2022-07-13 22:06:30,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 210.85714285714286) internal successors, (1476), 7 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:30,459 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:30,460 INFO L200 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] [2022-07-13 22:06:30,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:06:30,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:06:30,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:30,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:30,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2142216354, now seen corresponding path program 1 times [2022-07-13 22:06:30,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:30,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733407915] [2022-07-13 22:06:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:30,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:30,697 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:06:30,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047428234] [2022-07-13 22:06:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:30,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:06:30,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:06:30,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:06:30,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:06:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:30,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 22:06:30,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:06:31,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:06:31,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:06:31,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:31,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733407915] [2022-07-13 22:06:31,240 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:06:31,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047428234] [2022-07-13 22:06:31,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047428234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:31,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:31,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 22:06:31,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33902693] [2022-07-13 22:06:31,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:31,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:06:31,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:31,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:06:31,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:06:31,252 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 279 [2022-07-13 22:06:31,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 248 transitions, 617 flow. Second operand has 12 states, 12 states have (on average 196.83333333333334) internal successors, (2362), 12 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:31,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 279 [2022-07-13 22:06:31,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:31,551 INFO L129 PetriNetUnfolder]: 67/594 cut-off events. [2022-07-13 22:06:31,551 INFO L130 PetriNetUnfolder]: For 151/172 co-relation queries the response was YES. [2022-07-13 22:06:31,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 594 events. 67/594 cut-off events. For 151/172 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1502 event pairs, 29 based on Foata normal form. 22/581 useless extension candidates. Maximal degree in co-relation 608. Up to 150 conditions per place. [2022-07-13 22:06:31,554 INFO L132 encePairwiseOnDemand]: 260/279 looper letters, 73 selfloop transitions, 12 changer transitions 35/291 dead transitions. [2022-07-13 22:06:31,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 291 transitions, 996 flow [2022-07-13 22:06:31,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:06:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:06:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3377 transitions. [2022-07-13 22:06:31,559 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7119966266076323 [2022-07-13 22:06:31,559 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3377 transitions. [2022-07-13 22:06:31,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3377 transitions. [2022-07-13 22:06:31,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:31,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3377 transitions. [2022-07-13 22:06:31,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 198.64705882352942) internal successors, (3377), 17 states have internal predecessors, (3377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 279.0) internal successors, (5022), 18 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,571 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 279.0) internal successors, (5022), 18 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,571 INFO L186 Difference]: Start difference. First operand has 262 places, 248 transitions, 617 flow. Second operand 17 states and 3377 transitions. [2022-07-13 22:06:31,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 291 transitions, 996 flow [2022-07-13 22:06:31,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 291 transitions, 968 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-13 22:06:31,577 INFO L242 Difference]: Finished difference. Result has 282 places, 250 transitions, 656 flow [2022-07-13 22:06:31,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=656, PETRI_PLACES=282, PETRI_TRANSITIONS=250} [2022-07-13 22:06:31,577 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 33 predicate places. [2022-07-13 22:06:31,578 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 250 transitions, 656 flow [2022-07-13 22:06:31,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 196.83333333333334) internal successors, (2362), 12 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,579 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:31,579 INFO L200 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] [2022-07-13 22:06:31,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:06:31,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:06:31,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:31,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:31,790 INFO L85 PathProgramCache]: Analyzing trace with hash -758976439, now seen corresponding path program 1 times [2022-07-13 22:06:31,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:31,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595378568] [2022-07-13 22:06:31,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:31,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:31,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:06:31,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806422369] [2022-07-13 22:06:31,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:31,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:06:31,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:06:31,820 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:06:31,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:06:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:31,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:06:31,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:06:32,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 22:06:32,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:06:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 22:06:32,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:32,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595378568] [2022-07-13 22:06:32,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:06:32,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806422369] [2022-07-13 22:06:32,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806422369] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:06:32,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:06:32,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2022-07-13 22:06:32,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317835921] [2022-07-13 22:06:32,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:32,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:06:32,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:32,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:06:32,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:06:32,290 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 279 [2022-07-13 22:06:32,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 250 transitions, 656 flow. Second operand has 7 states, 7 states have (on average 216.28571428571428) internal successors, (1514), 7 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:32,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:32,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 279 [2022-07-13 22:06:32,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:32,368 INFO L129 PetriNetUnfolder]: 17/334 cut-off events. [2022-07-13 22:06:32,368 INFO L130 PetriNetUnfolder]: For 72/80 co-relation queries the response was YES. [2022-07-13 22:06:32,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 334 events. 17/334 cut-off events. For 72/80 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 372 event pairs, 2 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 445. Up to 67 conditions per place. [2022-07-13 22:06:32,370 INFO L132 encePairwiseOnDemand]: 271/279 looper letters, 53 selfloop transitions, 7 changer transitions 0/253 dead transitions. [2022-07-13 22:06:32,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 253 transitions, 783 flow [2022-07-13 22:06:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:06:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:06:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1523 transitions. [2022-07-13 22:06:32,373 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7798259088581669 [2022-07-13 22:06:32,373 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1523 transitions. [2022-07-13 22:06:32,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1523 transitions. [2022-07-13 22:06:32,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:32,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1523 transitions. [2022-07-13 22:06:32,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 217.57142857142858) internal successors, (1523), 7 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:32,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:32,387 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:32,387 INFO L186 Difference]: Start difference. First operand has 282 places, 250 transitions, 656 flow. Second operand 7 states and 1523 transitions. [2022-07-13 22:06:32,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 253 transitions, 783 flow [2022-07-13 22:06:32,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 253 transitions, 747 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-07-13 22:06:32,391 INFO L242 Difference]: Finished difference. Result has 269 places, 252 transitions, 653 flow [2022-07-13 22:06:32,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=269, PETRI_TRANSITIONS=252} [2022-07-13 22:06:32,392 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 20 predicate places. [2022-07-13 22:06:32,392 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 252 transitions, 653 flow [2022-07-13 22:06:32,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.28571428571428) internal successors, (1514), 7 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:32,393 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:32,393 INFO L200 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] [2022-07-13 22:06:32,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:06:32,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:06:32,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:32,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:32,607 INFO L85 PathProgramCache]: Analyzing trace with hash 67830325, now seen corresponding path program 1 times [2022-07-13 22:06:32,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:32,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544365414] [2022-07-13 22:06:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:32,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:32,634 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:06:32,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186991012] [2022-07-13 22:06:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:32,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:06:32,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:06:32,639 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:06:32,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:06:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:32,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 134 conjunts are in the unsatisfiable core [2022-07-13 22:06:32,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:06:33,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:06:33,485 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:06:33,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-13 22:06:33,860 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-13 22:06:33,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-13 22:06:34,519 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-13 22:06:34,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-07-13 22:06:35,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-13 22:06:35,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:06:35,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2022-07-13 22:06:35,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:06:35,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2022-07-13 22:06:36,389 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 22:06:36,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 65 [2022-07-13 22:06:36,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-07-13 22:06:36,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-07-13 22:06:36,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-07-13 22:06:36,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-07-13 22:06:36,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 45 [2022-07-13 22:06:37,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:06:37,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2022-07-13 22:06:37,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:06:37,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 38 [2022-07-13 22:06:38,094 INFO L356 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2022-07-13 22:06:38,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 19 [2022-07-13 22:06:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:06:38,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:06:39,647 WARN L833 $PredicateComparison]: unable to prove that (forall ((~A~0.offset Int) (v_ArrVal_557 (Array Int Int)) (~a~0 Int) (v_ArrVal_559 (Array Int Int)) (~b~0 Int) (v_ArrVal_560 (Array Int Int)) (v_ArrVal_563 (Array Int Int))) (or (< ~b~0 0) (let ((.cse2 (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#t~mem5.base| (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#t~mem5.base|) (+ (* c_thread2Thread1of1ForFork0_~j~0 4) |c_thread2Thread1of1ForFork0_#t~mem5.offset|) |c_thread2Thread1of1ForFork0_#t~mem6|)))) (let ((.cse0 (store (select .cse2 c_~A~0.base) ~A~0.offset (select (select .cse2 c_~F~0.base) c_~F~0.offset))) (.cse1 (* ~b~0 4))) (= (select .cse0 (+ (* (* ~a~0 c_~M~0) 4) ~A~0.offset .cse1)) (let ((.cse3 (+ (* ~a~0 4) c_~B~0.offset))) (select (select (store .cse2 c_~A~0.base .cse0) (select (select (store (store |c_#memory_$Pointer$.base| |c_thread2Thread1of1ForFork0_#t~mem5.base| v_ArrVal_557) c_~A~0.base v_ArrVal_560) c_~B~0.base) .cse3)) (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_thread2Thread1of1ForFork0_#t~mem5.base| v_ArrVal_559) c_~A~0.base v_ArrVal_563) c_~B~0.base) .cse3) .cse1)))))) (< ~a~0 0) (<= c_~M~0 ~b~0) (<= c_~N~0 ~a~0))) is different from false [2022-07-13 22:06:39,771 INFO L356 Elim1Store]: treesize reduction 163, result has 60.4 percent of original size [2022-07-13 22:06:39,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 1687 treesize of output 1362 [2022-07-13 22:06:39,871 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:06:39,871 INFO L390 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 1458 treesize of output 1480 [2022-07-13 22:06:40,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 4 [2022-07-13 22:06:40,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2022-07-13 22:06:40,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2022-07-13 22:06:40,759 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:06:40,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 94 [2022-07-13 22:08:20,320 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-07-13 22:08:20,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 241 treesize of output 176 [2022-07-13 22:08:20,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 85 [2022-07-13 22:08:20,557 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:08:20,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 191 [2022-07-13 22:08:21,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:21,354 INFO L356 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-07-13 22:08:21,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 116 [2022-07-13 22:08:21,714 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:08:21,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 151 [2022-07-13 22:08:21,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2022-07-13 22:08:22,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 41 [2022-07-13 22:08:34,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 63 [2022-07-13 22:08:34,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 63 [2022-07-13 22:08:34,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 85 [2022-07-13 22:08:34,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 118 [2022-07-13 22:08:35,525 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:08:35,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 396 treesize of output 358 [2022-07-13 22:08:37,511 INFO L356 Elim1Store]: treesize reduction 49, result has 57.4 percent of original size [2022-07-13 22:08:37,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 227 treesize of output 241 [2022-07-13 22:08:38,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:38,167 INFO L356 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-07-13 22:08:38,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 215 treesize of output 1 [2022-07-13 22:08:38,208 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-07-13 22:08:38,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 1 [2022-07-13 22:08:38,278 INFO L356 Elim1Store]: treesize reduction 12, result has 86.2 percent of original size [2022-07-13 22:08:38,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 259 treesize of output 274 [2022-07-13 22:08:38,412 INFO L356 Elim1Store]: treesize reduction 5, result has 76.2 percent of original size [2022-07-13 22:08:38,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 149 [2022-07-13 22:08:39,278 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:08:39,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 140 [2022-07-13 22:08:39,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 34 [2022-07-13 22:08:39,426 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:08:39,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 70 [2022-07-13 22:08:39,503 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:08:39,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 153 treesize of output 202 [2022-07-13 22:08:39,731 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:08:39,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 140 [2022-07-13 22:08:39,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 34 [2022-07-13 22:08:39,871 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-07-13 22:08:39,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 1 [2022-07-13 22:08:39,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:08:39,886 INFO L356 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2022-07-13 22:08:39,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 153 treesize of output 1 [2022-07-13 22:08:40,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 56 [2022-07-13 22:08:40,074 INFO L356 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-07-13 22:08:40,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 1 [2022-07-13 22:08:40,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:40,106 INFO L356 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-07-13 22:08:40,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 175 treesize of output 1 [2022-07-13 22:08:40,120 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-07-13 22:08:40,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 1 [2022-07-13 22:08:40,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:40,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:40,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 97 [2022-07-13 22:08:40,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:40,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2022-07-13 22:08:40,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:40,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:40,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 86 [2022-07-13 22:08:40,826 INFO L356 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-07-13 22:08:40,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 222 treesize of output 160 [2022-07-13 22:08:40,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:41,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:41,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-07-13 22:08:41,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:41,095 INFO L356 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2022-07-13 22:08:41,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 100 [2022-07-13 22:08:41,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:41,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:08:41,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 86 [2022-07-13 22:08:41,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:41,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2022-07-13 22:08:41,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:41,422 INFO L356 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-07-13 22:08:41,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 105 [2022-07-13 22:08:41,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:41,646 INFO L356 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2022-07-13 22:08:41,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 1 [2022-07-13 22:08:41,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:41,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2022-07-13 22:08:41,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:41,758 INFO L356 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-07-13 22:08:41,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 105 [2022-07-13 22:08:52,767 INFO L356 Elim1Store]: treesize reduction 31, result has 87.1 percent of original size [2022-07-13 22:08:52,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1847 treesize of output 1537 [2022-07-13 22:09:58,038 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:09:58,038 INFO L390 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 2225 treesize of output 1929 [2022-07-13 22:09:58,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1913 treesize of output 1841 [2022-07-13 22:09:58,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1841 treesize of output 1697 [2022-07-13 22:10:03,053 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:10:03,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-07-13 22:10:03,066 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:10:03,067 INFO L390 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 135 treesize of output 131 [2022-07-13 22:10:03,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2022-07-13 22:10:03,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 102 [2022-07-13 22:10:03,318 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:10:03,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-07-13 22:10:03,326 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:10:03,326 INFO L390 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 69 treesize of output 69 [2022-07-13 22:10:03,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2022-07-13 22:10:03,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-07-13 22:10:03,406 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:10:03,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-07-13 22:10:03,411 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:10:03,411 INFO L390 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 69 treesize of output 69 [2022-07-13 22:10:03,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2022-07-13 22:10:03,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-07-13 22:10:03,466 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:10:03,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-07-13 22:10:03,473 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:10:03,474 INFO L390 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 69 treesize of output 69 [2022-07-13 22:10:03,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2022-07-13 22:10:03,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-07-13 22:10:12,292 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:10:12,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 145 [2022-07-13 22:10:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:10:13,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:10:13,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544365414] [2022-07-13 22:10:13,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:10:13,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186991012] [2022-07-13 22:10:13,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186991012] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:10:13,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:10:13,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 53] total 107 [2022-07-13 22:10:13,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018015051] [2022-07-13 22:10:13,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:10:13,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-07-13 22:10:13,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:10:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-07-13 22:10:13,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=10509, Unknown=37, NotChecked=208, Total=11342 [2022-07-13 22:10:13,687 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 279 [2022-07-13 22:10:13,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 252 transitions, 653 flow. Second operand has 107 states, 107 states have (on average 75.97196261682242) internal successors, (8129), 107 states have internal predecessors, (8129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:10:13,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:10:13,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 279 [2022-07-13 22:10:13,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand