./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/unroll-3.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 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:24:42,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:24:42,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:24:42,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:24:42,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:24:42,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:24:42,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:24:42,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:24:42,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:24:42,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:24:42,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:24:42,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:24:42,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:24:42,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:24:42,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:24:42,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:24:42,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:24:42,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:24:42,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:24:42,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:24:42,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:24:42,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:24:42,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:24:42,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:24:42,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:24:42,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:24:42,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:24:42,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:24:42,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:24:42,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:24:42,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:24:42,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:24:42,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:24:42,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:24:42,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:24:42,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:24:42,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:24:42,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:24:42,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:24:42,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:24:42,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:24:42,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 15:24:42,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:24:42,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:24:42,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:24:42,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:24:42,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:24:42,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:24:42,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:24:42,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:24:42,487 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:24:42,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:24:42,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 15:24:42,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:24:42,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 15:24:42,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:24:42,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:24:42,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:24:42,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:24:42,488 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 15:24:42,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:24:42,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:24:42,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:24:42,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:24:42,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:24:42,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:24:42,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:24:42,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:24:42,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:24:42,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:24:42,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:24:42,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:24:42,490 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:24:42,490 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:24:42,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:24:42,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:24:42,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 [2021-12-21 15:24:42,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:24:42,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:24:42,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:24:42,645 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:24:42,646 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:24:42,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-3.wvr.c [2021-12-21 15:24:42,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3078ac982/fc9bfb82d66b4e6e806e479b1fac74a9/FLAG393561f98 [2021-12-21 15:24:43,015 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:24:43,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-3.wvr.c [2021-12-21 15:24:43,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3078ac982/fc9bfb82d66b4e6e806e479b1fac74a9/FLAG393561f98 [2021-12-21 15:24:43,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3078ac982/fc9bfb82d66b4e6e806e479b1fac74a9 [2021-12-21 15:24:43,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:24:43,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:24:43,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:24:43,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:24:43,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:24:43,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:24:43" (1/1) ... [2021-12-21 15:24:43,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58806cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43, skipping insertion in model container [2021-12-21 15:24:43,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:24:43" (1/1) ... [2021-12-21 15:24:43,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:24:43,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:24:43,702 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/unroll-3.wvr.c[2500,2513] [2021-12-21 15:24:43,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:24:43,733 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:24:43,745 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/unroll-3.wvr.c[2500,2513] [2021-12-21 15:24:43,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:24:43,762 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:24:43,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43 WrapperNode [2021-12-21 15:24:43,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:24:43,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:24:43,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:24:43,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:24:43,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43" (1/1) ... [2021-12-21 15:24:43,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43" (1/1) ... [2021-12-21 15:24:43,813 INFO L137 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2021-12-21 15:24:43,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:24:43,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:24:43,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:24:43,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:24:43,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43" (1/1) ... [2021-12-21 15:24:43,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43" (1/1) ... [2021-12-21 15:24:43,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43" (1/1) ... [2021-12-21 15:24:43,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43" (1/1) ... [2021-12-21 15:24:43,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43" (1/1) ... [2021-12-21 15:24:43,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43" (1/1) ... [2021-12-21 15:24:43,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43" (1/1) ... [2021-12-21 15:24:43,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:24:43,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:24:43,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:24:43,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:24:43,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43" (1/1) ... [2021-12-21 15:24:43,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:24:43,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:24:43,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 15:24:43,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 15:24:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:24:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-21 15:24:43,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-21 15:24:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-21 15:24:43,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-21 15:24:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:24:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:24:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:24:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:24:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:24:43,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:24:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:24:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:24:43,957 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 15:24:44,060 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:24:44,061 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:24:44,248 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:24:44,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:24:44,256 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-21 15:24:44,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:24:44 BoogieIcfgContainer [2021-12-21 15:24:44,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:24:44,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:24:44,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:24:44,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:24:44,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:24:43" (1/3) ... [2021-12-21 15:24:44,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f69250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:24:44, skipping insertion in model container [2021-12-21 15:24:44,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:24:43" (2/3) ... [2021-12-21 15:24:44,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f69250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:24:44, skipping insertion in model container [2021-12-21 15:24:44,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:24:44" (3/3) ... [2021-12-21 15:24:44,263 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-3.wvr.c [2021-12-21 15:24:44,266 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 15:24:44,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:24:44,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:24:44,266 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 15:24:44,296 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,297 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,297 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,298 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,298 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,299 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,299 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,299 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,299 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,300 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,300 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,300 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,300 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,301 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,301 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,301 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,301 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,301 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,301 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,306 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,306 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,306 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,307 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,307 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,308 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,308 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,308 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,308 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,309 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,309 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,309 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,310 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,310 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,310 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,310 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,310 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,310 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,317 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,317 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,317 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,317 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,326 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,328 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,328 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,328 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,328 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,331 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,331 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,331 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,331 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:24:44,336 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-21 15:24:44,376 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:24:44,380 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:24:44,380 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-21 15:24:44,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 177 places, 185 transitions, 386 flow [2021-12-21 15:24:44,483 INFO L129 PetriNetUnfolder]: 15/183 cut-off events. [2021-12-21 15:24:44,483 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-21 15:24:44,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 15/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 177 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2021-12-21 15:24:44,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 185 transitions, 386 flow [2021-12-21 15:24:44,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 174 transitions, 360 flow [2021-12-21 15:24:44,545 INFO L129 PetriNetUnfolder]: 13/156 cut-off events. [2021-12-21 15:24:44,545 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-21 15:24:44,545 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:24:44,546 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:24:44,546 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:24:44,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:24:44,550 INFO L85 PathProgramCache]: Analyzing trace with hash 684426458, now seen corresponding path program 1 times [2021-12-21 15:24:44,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:24:44,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738748037] [2021-12-21 15:24:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:24:44,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:24:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:24:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:24:44,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:24:44,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738748037] [2021-12-21 15:24:44,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738748037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:24:44,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:24:44,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:24:44,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237755936] [2021-12-21 15:24:44,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:24:44,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:24:44,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:24:44,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:24:44,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:24:44,813 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 185 [2021-12-21 15:24:44,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 174 transitions, 360 flow. Second operand has 2 states, 2 states have (on average 170.5) internal successors, (341), 2 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:44,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:24:44,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 185 [2021-12-21 15:24:44,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:24:44,870 INFO L129 PetriNetUnfolder]: 3/162 cut-off events. [2021-12-21 15:24:44,871 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-12-21 15:24:44,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 162 events. 3/162 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 143 event pairs, 0 based on Foata normal form. 15/165 useless extension candidates. Maximal degree in co-relation 104. Up to 5 conditions per place. [2021-12-21 15:24:44,874 INFO L132 encePairwiseOnDemand]: 173/185 looper letters, 4 selfloop transitions, 0 changer transitions 5/162 dead transitions. [2021-12-21 15:24:44,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 162 transitions, 344 flow [2021-12-21 15:24:44,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:24:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 15:24:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 352 transitions. [2021-12-21 15:24:44,889 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9513513513513514 [2021-12-21 15:24:44,890 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 352 transitions. [2021-12-21 15:24:44,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 352 transitions. [2021-12-21 15:24:44,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:24:44,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 352 transitions. [2021-12-21 15:24:44,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 176.0) internal successors, (352), 2 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:44,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:44,911 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:44,913 INFO L186 Difference]: Start difference. First operand has 166 places, 174 transitions, 360 flow. Second operand 2 states and 352 transitions. [2021-12-21 15:24:44,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 162 transitions, 344 flow [2021-12-21 15:24:44,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 162 transitions, 336 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:24:44,939 INFO L242 Difference]: Finished difference. Result has 163 places, 157 transitions, 318 flow [2021-12-21 15:24:44,941 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=318, PETRI_PLACES=163, PETRI_TRANSITIONS=157} [2021-12-21 15:24:44,945 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, -3 predicate places. [2021-12-21 15:24:44,946 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 157 transitions, 318 flow [2021-12-21 15:24:44,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 170.5) internal successors, (341), 2 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:44,946 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:24:44,947 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:24:44,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:24:44,948 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:24:44,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:24:44,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1060148991, now seen corresponding path program 1 times [2021-12-21 15:24:44,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:24:44,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396877523] [2021-12-21 15:24:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:24:44,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:24:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:24:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:24:45,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:24:45,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396877523] [2021-12-21 15:24:45,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396877523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:24:45,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:24:45,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:24:45,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148118072] [2021-12-21 15:24:45,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:24:45,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:24:45,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:24:45,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:24:45,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:24:45,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 185 [2021-12-21 15:24:45,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 157 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:45,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:24:45,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 185 [2021-12-21 15:24:45,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:24:45,336 INFO L129 PetriNetUnfolder]: 97/652 cut-off events. [2021-12-21 15:24:45,337 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2021-12-21 15:24:45,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 652 events. 97/652 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3381 event pairs, 29 based on Foata normal form. 1/604 useless extension candidates. Maximal degree in co-relation 881. Up to 106 conditions per place. [2021-12-21 15:24:45,341 INFO L132 encePairwiseOnDemand]: 178/185 looper letters, 59 selfloop transitions, 5 changer transitions 4/187 dead transitions. [2021-12-21 15:24:45,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 187 transitions, 519 flow [2021-12-21 15:24:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:24:45,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:24:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 843 transitions. [2021-12-21 15:24:45,345 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594594594594595 [2021-12-21 15:24:45,345 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 843 transitions. [2021-12-21 15:24:45,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 843 transitions. [2021-12-21 15:24:45,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:24:45,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 843 transitions. [2021-12-21 15:24:45,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:45,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:45,350 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:45,351 INFO L186 Difference]: Start difference. First operand has 163 places, 157 transitions, 318 flow. Second operand 6 states and 843 transitions. [2021-12-21 15:24:45,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 187 transitions, 519 flow [2021-12-21 15:24:45,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 187 transitions, 519 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:24:45,357 INFO L242 Difference]: Finished difference. Result has 166 places, 160 transitions, 347 flow [2021-12-21 15:24:45,358 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=166, PETRI_TRANSITIONS=160} [2021-12-21 15:24:45,358 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 0 predicate places. [2021-12-21 15:24:45,359 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 160 transitions, 347 flow [2021-12-21 15:24:45,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:45,359 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:24:45,360 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:24:45,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:24:45,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:24:45,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:24:45,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1799470512, now seen corresponding path program 1 times [2021-12-21 15:24:45,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:24:45,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495439137] [2021-12-21 15:24:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:24:45,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:24:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:24:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:24:45,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:24:45,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495439137] [2021-12-21 15:24:45,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495439137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:24:45,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:24:45,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:24:45,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638214222] [2021-12-21 15:24:45,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:24:45,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:24:45,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:24:45,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:24:45,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:24:45,498 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 185 [2021-12-21 15:24:45,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 160 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:45,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:24:45,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 185 [2021-12-21 15:24:45,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:24:45,580 INFO L129 PetriNetUnfolder]: 86/726 cut-off events. [2021-12-21 15:24:45,580 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-12-21 15:24:45,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 726 events. 86/726 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3692 event pairs, 40 based on Foata normal form. 0/646 useless extension candidates. Maximal degree in co-relation 964. Up to 141 conditions per place. [2021-12-21 15:24:45,584 INFO L132 encePairwiseOnDemand]: 179/185 looper letters, 23 selfloop transitions, 5 changer transitions 0/170 dead transitions. [2021-12-21 15:24:45,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 170 transitions, 426 flow [2021-12-21 15:24:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:24:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-21 15:24:45,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 799 transitions. [2021-12-21 15:24:45,586 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8637837837837837 [2021-12-21 15:24:45,586 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 799 transitions. [2021-12-21 15:24:45,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 799 transitions. [2021-12-21 15:24:45,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:24:45,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 799 transitions. [2021-12-21 15:24:45,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:45,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:45,589 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:45,589 INFO L186 Difference]: Start difference. First operand has 166 places, 160 transitions, 347 flow. Second operand 5 states and 799 transitions. [2021-12-21 15:24:45,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 170 transitions, 426 flow [2021-12-21 15:24:45,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 170 transitions, 422 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-12-21 15:24:45,592 INFO L242 Difference]: Finished difference. Result has 168 places, 162 transitions, 367 flow [2021-12-21 15:24:45,593 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2021-12-21 15:24:45,593 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 2 predicate places. [2021-12-21 15:24:45,593 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 367 flow [2021-12-21 15:24:45,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:45,594 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:24:45,594 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:24:45,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:24:45,595 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:24:45,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:24:45,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1678464470, now seen corresponding path program 2 times [2021-12-21 15:24:45,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:24:45,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646460701] [2021-12-21 15:24:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:24:45,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:24:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:24:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:24:45,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:24:45,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646460701] [2021-12-21 15:24:45,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646460701] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:24:45,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058155491] [2021-12-21 15:24:45,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:24:45,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:24:45,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:24:45,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:24:45,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:24:45,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 15:24:45,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:24:45,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:24:45,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:24:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:24:46,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:24:46,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058155491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:24:46,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:24:46,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2021-12-21 15:24:46,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220332669] [2021-12-21 15:24:46,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:24:46,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:24:46,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:24:46,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:24:46,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:24:46,136 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 185 [2021-12-21 15:24:46,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 367 flow. Second operand has 8 states, 8 states have (on average 131.125) internal successors, (1049), 8 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:46,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:24:46,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 185 [2021-12-21 15:24:46,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:24:46,353 INFO L129 PetriNetUnfolder]: 31/507 cut-off events. [2021-12-21 15:24:46,353 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-12-21 15:24:46,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 507 events. 31/507 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1960 event pairs, 18 based on Foata normal form. 0/473 useless extension candidates. Maximal degree in co-relation 667. Up to 81 conditions per place. [2021-12-21 15:24:46,356 INFO L132 encePairwiseOnDemand]: 173/185 looper letters, 33 selfloop transitions, 11 changer transitions 0/166 dead transitions. [2021-12-21 15:24:46,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 166 transitions, 463 flow [2021-12-21 15:24:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:24:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:24:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1442 transitions. [2021-12-21 15:24:46,359 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7085995085995086 [2021-12-21 15:24:46,359 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1442 transitions. [2021-12-21 15:24:46,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1442 transitions. [2021-12-21 15:24:46,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:24:46,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1442 transitions. [2021-12-21 15:24:46,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.0909090909091) internal successors, (1442), 11 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:46,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:46,365 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:46,366 INFO L186 Difference]: Start difference. First operand has 168 places, 162 transitions, 367 flow. Second operand 11 states and 1442 transitions. [2021-12-21 15:24:46,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 166 transitions, 463 flow [2021-12-21 15:24:46,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 166 transitions, 457 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-21 15:24:46,390 INFO L242 Difference]: Finished difference. Result has 177 places, 163 transitions, 391 flow [2021-12-21 15:24:46,390 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=391, PETRI_PLACES=177, PETRI_TRANSITIONS=163} [2021-12-21 15:24:46,391 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 11 predicate places. [2021-12-21 15:24:46,391 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 163 transitions, 391 flow [2021-12-21 15:24:46,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.125) internal successors, (1049), 8 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:46,392 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:24:46,392 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:24:46,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:24:46,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:24:46,610 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:24:46,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:24:46,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2061797940, now seen corresponding path program 1 times [2021-12-21 15:24:46,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:24:46,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942234023] [2021-12-21 15:24:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:24:46,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:24:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:24:46,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:24:46,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:24:46,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942234023] [2021-12-21 15:24:46,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942234023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:24:46,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:24:46,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:24:46,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802443133] [2021-12-21 15:24:46,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:24:46,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:24:46,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:24:46,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:24:46,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:24:46,757 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 185 [2021-12-21 15:24:46,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 163 transitions, 391 flow. Second operand has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:46,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:24:46,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 185 [2021-12-21 15:24:46,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:24:46,903 INFO L129 PetriNetUnfolder]: 182/1173 cut-off events. [2021-12-21 15:24:46,904 INFO L130 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2021-12-21 15:24:46,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 1173 events. 182/1173 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7305 event pairs, 58 based on Foata normal form. 12/1114 useless extension candidates. Maximal degree in co-relation 1745. Up to 175 conditions per place. [2021-12-21 15:24:46,910 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 53 selfloop transitions, 7 changer transitions 1/201 dead transitions. [2021-12-21 15:24:46,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 201 transitions, 625 flow [2021-12-21 15:24:46,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:24:46,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-21 15:24:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2021-12-21 15:24:46,912 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778378378378379 [2021-12-21 15:24:46,913 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2021-12-21 15:24:46,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2021-12-21 15:24:46,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:24:46,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2021-12-21 15:24:46,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:46,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:46,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:46,916 INFO L186 Difference]: Start difference. First operand has 177 places, 163 transitions, 391 flow. Second operand 5 states and 812 transitions. [2021-12-21 15:24:46,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 201 transitions, 625 flow [2021-12-21 15:24:46,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 201 transitions, 605 flow, removed 0 selfloop flow, removed 9 redundant places. [2021-12-21 15:24:46,942 INFO L242 Difference]: Finished difference. Result has 175 places, 169 transitions, 428 flow [2021-12-21 15:24:46,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=175, PETRI_TRANSITIONS=169} [2021-12-21 15:24:46,945 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 9 predicate places. [2021-12-21 15:24:46,945 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 169 transitions, 428 flow [2021-12-21 15:24:46,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:46,945 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:24:46,946 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:24:46,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:24:46,946 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:24:46,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:24:46,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1755447122, now seen corresponding path program 2 times [2021-12-21 15:24:46,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:24:46,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940335078] [2021-12-21 15:24:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:24:46,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:24:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:24:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:24:47,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:24:47,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940335078] [2021-12-21 15:24:47,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940335078] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:24:47,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036432406] [2021-12-21 15:24:47,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:24:47,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:24:47,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:24:47,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:24:47,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:24:47,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:24:47,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:24:47,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:24:47,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:24:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:24:47,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:24:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:24:47,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036432406] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 15:24:47,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:24:47,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 5] total 9 [2021-12-21 15:24:47,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980546414] [2021-12-21 15:24:47,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:24:47,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:24:47,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:24:47,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:24:47,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:24:47,533 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 185 [2021-12-21 15:24:47,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 169 transitions, 428 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:47,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:24:47,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 185 [2021-12-21 15:24:47,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:24:47,633 INFO L129 PetriNetUnfolder]: 124/977 cut-off events. [2021-12-21 15:24:47,633 INFO L130 PetriNetUnfolder]: For 361/378 co-relation queries the response was YES. [2021-12-21 15:24:47,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 977 events. 124/977 cut-off events. For 361/378 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5707 event pairs, 22 based on Foata normal form. 14/932 useless extension candidates. Maximal degree in co-relation 1559. Up to 152 conditions per place. [2021-12-21 15:24:47,637 INFO L132 encePairwiseOnDemand]: 180/185 looper letters, 26 selfloop transitions, 10 changer transitions 2/183 dead transitions. [2021-12-21 15:24:47,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 183 transitions, 574 flow [2021-12-21 15:24:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:24:47,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-21 15:24:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 647 transitions. [2021-12-21 15:24:47,639 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8743243243243243 [2021-12-21 15:24:47,639 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 647 transitions. [2021-12-21 15:24:47,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 647 transitions. [2021-12-21 15:24:47,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:24:47,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 647 transitions. [2021-12-21 15:24:47,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:47,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:47,642 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:47,642 INFO L186 Difference]: Start difference. First operand has 175 places, 169 transitions, 428 flow. Second operand 4 states and 647 transitions. [2021-12-21 15:24:47,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 183 transitions, 574 flow [2021-12-21 15:24:47,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 183 transitions, 574 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:24:47,645 INFO L242 Difference]: Finished difference. Result has 181 places, 174 transitions, 504 flow [2021-12-21 15:24:47,646 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=504, PETRI_PLACES=181, PETRI_TRANSITIONS=174} [2021-12-21 15:24:47,646 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 15 predicate places. [2021-12-21 15:24:47,646 INFO L470 AbstractCegarLoop]: Abstraction has has 181 places, 174 transitions, 504 flow [2021-12-21 15:24:47,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:47,647 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:24:47,647 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:24:47,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-21 15:24:47,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-21 15:24:47,883 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:24:47,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:24:47,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1895873466, now seen corresponding path program 3 times [2021-12-21 15:24:47,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:24:47,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555108744] [2021-12-21 15:24:47,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:24:47,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:24:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:24:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:24:47,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:24:47,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555108744] [2021-12-21 15:24:47,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555108744] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:24:47,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776709650] [2021-12-21 15:24:47,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 15:24:47,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:24:47,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:24:47,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:24:47,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:24:48,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-21 15:24:48,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:24:48,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:24:48,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:24:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:24:48,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:24:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:24:48,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776709650] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:24:48,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:24:48,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2021-12-21 15:24:48,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632151076] [2021-12-21 15:24:48,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:24:48,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:24:48,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:24:48,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:24:48,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:24:48,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 185 [2021-12-21 15:24:48,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 174 transitions, 504 flow. Second operand has 8 states, 8 states have (on average 154.125) internal successors, (1233), 8 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:48,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:24:48,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 185 [2021-12-21 15:24:48,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:24:48,575 INFO L129 PetriNetUnfolder]: 235/1543 cut-off events. [2021-12-21 15:24:48,576 INFO L130 PetriNetUnfolder]: For 1086/1094 co-relation queries the response was YES. [2021-12-21 15:24:48,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2790 conditions, 1543 events. 235/1543 cut-off events. For 1086/1094 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 10604 event pairs, 70 based on Foata normal form. 8/1459 useless extension candidates. Maximal degree in co-relation 2775. Up to 346 conditions per place. [2021-12-21 15:24:48,583 INFO L132 encePairwiseOnDemand]: 179/185 looper letters, 58 selfloop transitions, 26 changer transitions 2/226 dead transitions. [2021-12-21 15:24:48,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 226 transitions, 935 flow [2021-12-21 15:24:48,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:24:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-21 15:24:48,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1431 transitions. [2021-12-21 15:24:48,586 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8594594594594595 [2021-12-21 15:24:48,586 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1431 transitions. [2021-12-21 15:24:48,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1431 transitions. [2021-12-21 15:24:48,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:24:48,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1431 transitions. [2021-12-21 15:24:48,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:48,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:48,631 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:48,631 INFO L186 Difference]: Start difference. First operand has 181 places, 174 transitions, 504 flow. Second operand 9 states and 1431 transitions. [2021-12-21 15:24:48,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 226 transitions, 935 flow [2021-12-21 15:24:48,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 226 transitions, 927 flow, removed 4 selfloop flow, removed 0 redundant places. [2021-12-21 15:24:48,636 INFO L242 Difference]: Finished difference. Result has 195 places, 193 transitions, 737 flow [2021-12-21 15:24:48,636 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=737, PETRI_PLACES=195, PETRI_TRANSITIONS=193} [2021-12-21 15:24:48,636 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 29 predicate places. [2021-12-21 15:24:48,637 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 193 transitions, 737 flow [2021-12-21 15:24:48,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.125) internal successors, (1233), 8 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:48,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:24:48,637 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:24:48,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 15:24:48,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:24:48,855 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:24:48,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:24:48,855 INFO L85 PathProgramCache]: Analyzing trace with hash -470324748, now seen corresponding path program 4 times [2021-12-21 15:24:48,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:24:48,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625519770] [2021-12-21 15:24:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:24:48,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:24:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:24:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:24:48,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:24:48,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625519770] [2021-12-21 15:24:48,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625519770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:24:48,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:24:48,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:24:48,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841515359] [2021-12-21 15:24:48,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:24:48,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:24:48,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:24:48,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:24:48,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:24:48,922 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 185 [2021-12-21 15:24:48,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 193 transitions, 737 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:48,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:24:48,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 185 [2021-12-21 15:24:48,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:24:49,112 INFO L129 PetriNetUnfolder]: 235/1497 cut-off events. [2021-12-21 15:24:49,113 INFO L130 PetriNetUnfolder]: For 1642/1642 co-relation queries the response was YES. [2021-12-21 15:24:49,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 1497 events. 235/1497 cut-off events. For 1642/1642 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 10177 event pairs, 82 based on Foata normal form. 9/1408 useless extension candidates. Maximal degree in co-relation 2972. Up to 322 conditions per place. [2021-12-21 15:24:49,120 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 56 selfloop transitions, 21 changer transitions 2/219 dead transitions. [2021-12-21 15:24:49,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 219 transitions, 1039 flow [2021-12-21 15:24:49,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:24:49,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:24:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 959 transitions. [2021-12-21 15:24:49,122 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8639639639639639 [2021-12-21 15:24:49,123 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 959 transitions. [2021-12-21 15:24:49,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 959 transitions. [2021-12-21 15:24:49,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:24:49,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 959 transitions. [2021-12-21 15:24:49,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,126 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,126 INFO L186 Difference]: Start difference. First operand has 195 places, 193 transitions, 737 flow. Second operand 6 states and 959 transitions. [2021-12-21 15:24:49,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 219 transitions, 1039 flow [2021-12-21 15:24:49,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 219 transitions, 1004 flow, removed 15 selfloop flow, removed 2 redundant places. [2021-12-21 15:24:49,132 INFO L242 Difference]: Finished difference. Result has 202 places, 198 transitions, 831 flow [2021-12-21 15:24:49,132 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=831, PETRI_PLACES=202, PETRI_TRANSITIONS=198} [2021-12-21 15:24:49,133 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 36 predicate places. [2021-12-21 15:24:49,133 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 198 transitions, 831 flow [2021-12-21 15:24:49,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,134 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:24:49,134 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:24:49,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 15:24:49,134 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:24:49,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:24:49,135 INFO L85 PathProgramCache]: Analyzing trace with hash -498513026, now seen corresponding path program 1 times [2021-12-21 15:24:49,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:24:49,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659693212] [2021-12-21 15:24:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:24:49,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:24:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:24:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:24:49,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:24:49,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659693212] [2021-12-21 15:24:49,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659693212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:24:49,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:24:49,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:24:49,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315243400] [2021-12-21 15:24:49,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:24:49,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:24:49,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:24:49,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:24:49,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:24:49,224 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 185 [2021-12-21 15:24:49,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 198 transitions, 831 flow. Second operand has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:24:49,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 185 [2021-12-21 15:24:49,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:24:49,362 INFO L129 PetriNetUnfolder]: 116/1208 cut-off events. [2021-12-21 15:24:49,362 INFO L130 PetriNetUnfolder]: For 1432/1455 co-relation queries the response was YES. [2021-12-21 15:24:49,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2294 conditions, 1208 events. 116/1208 cut-off events. For 1432/1455 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7349 event pairs, 23 based on Foata normal form. 14/1138 useless extension candidates. Maximal degree in co-relation 2269. Up to 167 conditions per place. [2021-12-21 15:24:49,370 INFO L132 encePairwiseOnDemand]: 180/185 looper letters, 46 selfloop transitions, 11 changer transitions 0/210 dead transitions. [2021-12-21 15:24:49,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 210 transitions, 1035 flow [2021-12-21 15:24:49,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:24:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-21 15:24:49,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 658 transitions. [2021-12-21 15:24:49,372 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8891891891891892 [2021-12-21 15:24:49,372 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 658 transitions. [2021-12-21 15:24:49,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 658 transitions. [2021-12-21 15:24:49,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:24:49,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 658 transitions. [2021-12-21 15:24:49,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.5) internal successors, (658), 4 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,374 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,374 INFO L186 Difference]: Start difference. First operand has 202 places, 198 transitions, 831 flow. Second operand 4 states and 658 transitions. [2021-12-21 15:24:49,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 210 transitions, 1035 flow [2021-12-21 15:24:49,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 210 transitions, 993 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-12-21 15:24:49,380 INFO L242 Difference]: Finished difference. Result has 202 places, 202 transitions, 880 flow [2021-12-21 15:24:49,381 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=880, PETRI_PLACES=202, PETRI_TRANSITIONS=202} [2021-12-21 15:24:49,381 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 36 predicate places. [2021-12-21 15:24:49,381 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 202 transitions, 880 flow [2021-12-21 15:24:49,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,382 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:24:49,382 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:24:49,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 15:24:49,382 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:24:49,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:24:49,383 INFO L85 PathProgramCache]: Analyzing trace with hash -197254562, now seen corresponding path program 2 times [2021-12-21 15:24:49,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:24:49,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948261596] [2021-12-21 15:24:49,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:24:49,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:24:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:24:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:24:49,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:24:49,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948261596] [2021-12-21 15:24:49,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948261596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:24:49,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:24:49,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:24:49,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414479133] [2021-12-21 15:24:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:24:49,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:24:49,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:24:49,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:24:49,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:24:49,421 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 185 [2021-12-21 15:24:49,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 202 transitions, 880 flow. Second operand has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:24:49,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 185 [2021-12-21 15:24:49,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:24:49,518 INFO L129 PetriNetUnfolder]: 107/1005 cut-off events. [2021-12-21 15:24:49,518 INFO L130 PetriNetUnfolder]: For 1275/1307 co-relation queries the response was YES. [2021-12-21 15:24:49,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 1005 events. 107/1005 cut-off events. For 1275/1307 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5689 event pairs, 18 based on Foata normal form. 19/954 useless extension candidates. Maximal degree in co-relation 1950. Up to 122 conditions per place. [2021-12-21 15:24:49,524 INFO L132 encePairwiseOnDemand]: 179/185 looper letters, 38 selfloop transitions, 16 changer transitions 3/210 dead transitions. [2021-12-21 15:24:49,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 210 transitions, 1036 flow [2021-12-21 15:24:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:24:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-21 15:24:49,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 814 transitions. [2021-12-21 15:24:49,525 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.88 [2021-12-21 15:24:49,526 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 814 transitions. [2021-12-21 15:24:49,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 814 transitions. [2021-12-21 15:24:49,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:24:49,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 814 transitions. [2021-12-21 15:24:49,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,529 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,529 INFO L186 Difference]: Start difference. First operand has 202 places, 202 transitions, 880 flow. Second operand 5 states and 814 transitions. [2021-12-21 15:24:49,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 210 transitions, 1036 flow [2021-12-21 15:24:49,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 210 transitions, 1028 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-12-21 15:24:49,534 INFO L242 Difference]: Finished difference. Result has 207 places, 202 transitions, 924 flow [2021-12-21 15:24:49,534 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=924, PETRI_PLACES=207, PETRI_TRANSITIONS=202} [2021-12-21 15:24:49,535 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 41 predicate places. [2021-12-21 15:24:49,535 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 202 transitions, 924 flow [2021-12-21 15:24:49,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:49,535 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:24:49,536 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:24:49,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 15:24:49,536 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:24:49,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:24:49,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1055518003, now seen corresponding path program 1 times [2021-12-21 15:24:49,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:24:49,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524468877] [2021-12-21 15:24:49,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:24:49,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:24:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:24:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:24:49,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:24:49,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524468877] [2021-12-21 15:24:49,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524468877] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:24:49,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318447081] [2021-12-21 15:24:49,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:24:49,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:24:49,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:24:49,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:24:49,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:24:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:24:49,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-21 15:24:49,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:24:50,532 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-12-21 15:24:50,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2021-12-21 15:24:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:24:50,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:24:51,140 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2021-12-21 15:24:51,140 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2021-12-21 15:24:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:24:51,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318447081] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:24:51,891 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:24:51,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 18] total 36 [2021-12-21 15:24:51,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821687231] [2021-12-21 15:24:51,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:24:51,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-21 15:24:51,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:24:51,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-21 15:24:51,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2021-12-21 15:24:51,895 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2021-12-21 15:24:51,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 202 transitions, 924 flow. Second operand has 36 states, 36 states have (on average 89.86111111111111) internal successors, (3235), 36 states have internal predecessors, (3235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:24:51,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:24:51,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2021-12-21 15:24:51,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:25:01,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 15:25:05,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 15:25:08,148 INFO L129 PetriNetUnfolder]: 10909/23746 cut-off events. [2021-12-21 15:25:08,155 INFO L130 PetriNetUnfolder]: For 32960/33185 co-relation queries the response was YES. [2021-12-21 15:25:08,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58548 conditions, 23746 events. 10909/23746 cut-off events. For 32960/33185 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 214116 event pairs, 465 based on Foata normal form. 480/22910 useless extension candidates. Maximal degree in co-relation 58521. Up to 3683 conditions per place. [2021-12-21 15:25:08,354 INFO L132 encePairwiseOnDemand]: 132/185 looper letters, 821 selfloop transitions, 424 changer transitions 223/1548 dead transitions. [2021-12-21 15:25:08,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 1548 transitions, 8997 flow [2021-12-21 15:25:08,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2021-12-21 15:25:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-12-21 15:25:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 14123 transitions. [2021-12-21 15:25:08,428 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5022403982930299 [2021-12-21 15:25:08,428 INFO L72 ComplementDD]: Start complementDD. Operand 152 states and 14123 transitions. [2021-12-21 15:25:08,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 152 states and 14123 transitions. [2021-12-21 15:25:08,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:25:08,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 152 states and 14123 transitions. [2021-12-21 15:25:08,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 153 states, 152 states have (on average 92.91447368421052) internal successors, (14123), 152 states have internal predecessors, (14123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:25:08,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 153 states, 153 states have (on average 185.0) internal successors, (28305), 153 states have internal predecessors, (28305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:25:08,506 INFO L81 ComplementDD]: Finished complementDD. Result has 153 states, 153 states have (on average 185.0) internal successors, (28305), 153 states have internal predecessors, (28305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:25:08,506 INFO L186 Difference]: Start difference. First operand has 207 places, 202 transitions, 924 flow. Second operand 152 states and 14123 transitions. [2021-12-21 15:25:08,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 1548 transitions, 8997 flow [2021-12-21 15:25:08,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 1548 transitions, 8769 flow, removed 20 selfloop flow, removed 4 redundant places. [2021-12-21 15:25:08,566 INFO L242 Difference]: Finished difference. Result has 453 places, 625 transitions, 4876 flow [2021-12-21 15:25:08,566 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=152, PETRI_FLOW=4876, PETRI_PLACES=453, PETRI_TRANSITIONS=625} [2021-12-21 15:25:08,567 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 287 predicate places. [2021-12-21 15:25:08,567 INFO L470 AbstractCegarLoop]: Abstraction has has 453 places, 625 transitions, 4876 flow [2021-12-21 15:25:08,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 89.86111111111111) internal successors, (3235), 36 states have internal predecessors, (3235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:25:08,568 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:25:08,568 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:25:08,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 15:25:08,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:25:08,785 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:25:08,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:25:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash -274538286, now seen corresponding path program 2 times [2021-12-21 15:25:08,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:25:08,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277259846] [2021-12-21 15:25:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:25:08,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:25:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:25:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:25:11,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:25:11,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277259846] [2021-12-21 15:25:11,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277259846] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:25:11,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776064195] [2021-12-21 15:25:11,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:25:11,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:25:11,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:25:11,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:25:11,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 15:25:11,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:25:11,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:25:11,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-21 15:25:11,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:25:11,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:25:12,052 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 15:25:12,052 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-21 15:25:12,257 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-21 15:25:12,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:25:12,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:25:13,830 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-12-21 15:25:13,831 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2021-12-21 15:25:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:25:14,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:25:17,413 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:25:17,413 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2021-12-21 15:25:17,421 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2021-12-21 15:25:17,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 173 [2021-12-21 15:25:17,429 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-21 15:25:17,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 142 [2021-12-21 15:25:17,435 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-21 15:25:17,435 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2021-12-21 15:25:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:25:18,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776064195] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:25:18,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:25:18,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 29, 27] total 68 [2021-12-21 15:25:18,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552549469] [2021-12-21 15:25:18,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:25:18,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-12-21 15:25:18,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:25:18,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-12-21 15:25:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=4059, Unknown=132, NotChecked=0, Total=4556 [2021-12-21 15:25:18,172 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 185 [2021-12-21 15:25:18,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 625 transitions, 4876 flow. Second operand has 68 states, 68 states have (on average 57.455882352941174) internal successors, (3907), 68 states have internal predecessors, (3907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:25:18,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:25:18,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 185 [2021-12-21 15:25:18,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:25:34,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []