./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro --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 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:05:19,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:05:19,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:05:19,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:05:19,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:05:19,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:05:19,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:05:19,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:05:19,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:05:19,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:05:19,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:05:19,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:05:19,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:05:19,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:05:19,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:05:19,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:05:19,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:05:19,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:05:19,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:05:19,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:05:19,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:05:19,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:05:19,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:05:19,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:05:19,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:05:19,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:05:19,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:05:19,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:05:19,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:05:19,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:05:19,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:05:19,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:05:19,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:05:19,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:05:19,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:05:19,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:05:19,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:05:19,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:05:19,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:05:19,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:05:19,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:05:19,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:05:19,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:05:19,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:05:19,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:05:19,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:05:19,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:05:19,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:05:19,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:05:19,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:05:19,317 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:05:19,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:05:19,317 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:05:19,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:05:19,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:05:19,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:05:19,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:05:19,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:05:19,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:05:19,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:05:19,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:05:19,319 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:05:19,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:05:19,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:05:19,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:05:19,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:05:19,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:05:19,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:05:19,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:05:19,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:05:19,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:05:19,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:05:19,321 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:05:19,321 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:05:19,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:05:19,322 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 [2022-11-18 20:05:19,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:05:19,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:05:19,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:05:19,623 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:05:19,624 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:05:19,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2022-11-18 20:05:19,696 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/data/1b229f4c6/0a563a7f6b304f248f936a4e000d45a6/FLAGfdc5499cf [2022-11-18 20:05:20,190 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:05:20,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2022-11-18 20:05:20,204 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/data/1b229f4c6/0a563a7f6b304f248f936a4e000d45a6/FLAGfdc5499cf [2022-11-18 20:05:20,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/data/1b229f4c6/0a563a7f6b304f248f936a4e000d45a6 [2022-11-18 20:05:20,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:05:20,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:05:20,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:05:20,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:05:20,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:05:20,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:20,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5251cc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20, skipping insertion in model container [2022-11-18 20:05:20,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:20,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:05:20,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:05:20,846 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-11-18 20:05:20,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:05:20,872 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:05:20,915 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-11-18 20:05:20,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:05:20,938 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:05:20,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20 WrapperNode [2022-11-18 20:05:20,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:05:20,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:05:20,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:05:20,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:05:20,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:20,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:20,997 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-11-18 20:05:20,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:05:20,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:05:21,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:05:21,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:05:21,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:21,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:21,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:21,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:21,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:21,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:21,041 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:21,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:21,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:05:21,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:05:21,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:05:21,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:05:21,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:21,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:05:21,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:21,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:05:21,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:05:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:05:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:05:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:05:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:05:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:05:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:05:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:05:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:05:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:05:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:05:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:05:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:05:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:05:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:05:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:05:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:05:21,156 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:05:21,294 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:05:21,297 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:05:21,566 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:05:21,623 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:05:21,638 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:05:21,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:05:21 BoogieIcfgContainer [2022-11-18 20:05:21,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:05:21,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:05:21,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:05:21,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:05:21,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:05:20" (1/3) ... [2022-11-18 20:05:21,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2762e71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:05:21, skipping insertion in model container [2022-11-18 20:05:21,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20" (2/3) ... [2022-11-18 20:05:21,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2762e71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:05:21, skipping insertion in model container [2022-11-18 20:05:21,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:05:21" (3/3) ... [2022-11-18 20:05:21,655 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2022-11-18 20:05:21,668 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:05:21,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:05:21,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:05:21,680 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:05:21,806 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:05:21,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 105 transitions, 234 flow [2022-11-18 20:05:21,978 INFO L130 PetriNetUnfolder]: 7/102 cut-off events. [2022-11-18 20:05:21,978 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:05:21,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 7/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-11-18 20:05:21,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 105 transitions, 234 flow [2022-11-18 20:05:21,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 91 transitions, 200 flow [2022-11-18 20:05:22,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:05:22,015 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@69898949, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:05:22,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 20:05:22,070 INFO L130 PetriNetUnfolder]: 7/90 cut-off events. [2022-11-18 20:05:22,070 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:05:22,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:22,072 INFO L209 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] [2022-11-18 20:05:22,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:22,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:22,080 INFO L85 PathProgramCache]: Analyzing trace with hash 446398564, now seen corresponding path program 1 times [2022-11-18 20:05:22,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:22,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706105012] [2022-11-18 20:05:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:22,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:22,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:22,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706105012] [2022-11-18 20:05:22,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706105012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:22,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:22,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:05:22,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056207961] [2022-11-18 20:05:22,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:22,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:05:22,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:22,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:05:22,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:05:22,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 105 [2022-11-18 20:05:22,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 200 flow. Second operand has 2 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:22,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:22,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 105 [2022-11-18 20:05:22,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:22,489 INFO L130 PetriNetUnfolder]: 13/115 cut-off events. [2022-11-18 20:05:22,489 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-18 20:05:22,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 115 events. 13/115 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 2 based on Foata normal form. 11/115 useless extension candidates. Maximal degree in co-relation 100. Up to 20 conditions per place. [2022-11-18 20:05:22,492 INFO L137 encePairwiseOnDemand]: 102/105 looper letters, 8 selfloop transitions, 0 changer transitions 1/88 dead transitions. [2022-11-18 20:05:22,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 210 flow [2022-11-18 20:05:22,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:05:22,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:05:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 197 transitions. [2022-11-18 20:05:22,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-11-18 20:05:22,507 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 197 transitions. [2022-11-18 20:05:22,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 197 transitions. [2022-11-18 20:05:22,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:22,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 197 transitions. [2022-11-18 20:05:22,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:22,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:22,532 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:22,535 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 200 flow. Second operand 2 states and 197 transitions. [2022-11-18 20:05:22,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 210 flow [2022-11-18 20:05:22,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 198 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:05:22,547 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 180 flow [2022-11-18 20:05:22,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=180, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2022-11-18 20:05:22,553 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -5 predicate places. [2022-11-18 20:05:22,553 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 180 flow [2022-11-18 20:05:22,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:22,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:22,554 INFO L209 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] [2022-11-18 20:05:22,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:05:22,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:22,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2101922214, now seen corresponding path program 1 times [2022-11-18 20:05:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:22,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801325423] [2022-11-18 20:05:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:23,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:23,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:23,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801325423] [2022-11-18 20:05:23,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801325423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:23,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:23,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:05:23,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010456745] [2022-11-18 20:05:23,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:23,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:05:23,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:23,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:05:23,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:05:23,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 105 [2022-11-18 20:05:23,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:23,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:23,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 105 [2022-11-18 20:05:23,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:23,530 INFO L130 PetriNetUnfolder]: 79/268 cut-off events. [2022-11-18 20:05:23,530 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-18 20:05:23,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 268 events. 79/268 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 941 event pairs, 9 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 402. Up to 53 conditions per place. [2022-11-18 20:05:23,534 INFO L137 encePairwiseOnDemand]: 99/105 looper letters, 30 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2022-11-18 20:05:23,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 102 transitions, 285 flow [2022-11-18 20:05:23,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:05:23,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:05:23,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 511 transitions. [2022-11-18 20:05:23,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2022-11-18 20:05:23,539 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 511 transitions. [2022-11-18 20:05:23,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 511 transitions. [2022-11-18 20:05:23,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:23,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 511 transitions. [2022-11-18 20:05:23,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:23,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:23,546 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:23,546 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 180 flow. Second operand 6 states and 511 transitions. [2022-11-18 20:05:23,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 102 transitions, 285 flow [2022-11-18 20:05:23,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 102 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:05:23,550 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 205 flow [2022-11-18 20:05:23,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2022-11-18 20:05:23,551 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 1 predicate places. [2022-11-18 20:05:23,551 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 205 flow [2022-11-18 20:05:23,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:23,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:23,553 INFO L209 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] [2022-11-18 20:05:23,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:05:23,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:23,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:23,554 INFO L85 PathProgramCache]: Analyzing trace with hash 283615948, now seen corresponding path program 2 times [2022-11-18 20:05:23,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:23,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451544882] [2022-11-18 20:05:23,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:23,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:24,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:24,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451544882] [2022-11-18 20:05:24,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451544882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:24,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:24,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:05:24,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604482870] [2022-11-18 20:05:24,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:24,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:05:24,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:24,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:05:24,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:05:24,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 105 [2022-11-18 20:05:24,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:24,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 105 [2022-11-18 20:05:24,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:24,236 INFO L130 PetriNetUnfolder]: 64/245 cut-off events. [2022-11-18 20:05:24,236 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-18 20:05:24,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 245 events. 64/245 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 834 event pairs, 12 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 399. Up to 46 conditions per place. [2022-11-18 20:05:24,242 INFO L137 encePairwiseOnDemand]: 99/105 looper letters, 27 selfloop transitions, 8 changer transitions 0/101 dead transitions. [2022-11-18 20:05:24,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 101 transitions, 311 flow [2022-11-18 20:05:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:05:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:05:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 508 transitions. [2022-11-18 20:05:24,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8063492063492064 [2022-11-18 20:05:24,245 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 508 transitions. [2022-11-18 20:05:24,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 508 transitions. [2022-11-18 20:05:24,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:24,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 508 transitions. [2022-11-18 20:05:24,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.66666666666667) internal successors, (508), 6 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,250 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,250 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 205 flow. Second operand 6 states and 508 transitions. [2022-11-18 20:05:24,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 101 transitions, 311 flow [2022-11-18 20:05:24,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 302 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:05:24,253 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 235 flow [2022-11-18 20:05:24,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2022-11-18 20:05:24,254 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2022-11-18 20:05:24,254 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 235 flow [2022-11-18 20:05:24,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:24,255 INFO L209 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] [2022-11-18 20:05:24,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:05:24,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash -870725748, now seen corresponding path program 3 times [2022-11-18 20:05:24,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:24,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577463348] [2022-11-18 20:05:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:24,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:24,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:24,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577463348] [2022-11-18 20:05:24,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577463348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:24,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:24,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:05:24,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742381423] [2022-11-18 20:05:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:24,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:05:24,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:24,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:05:24,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:05:24,595 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 105 [2022-11-18 20:05:24,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 235 flow. Second operand has 7 states, 7 states have (on average 81.28571428571429) internal successors, (569), 7 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:24,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 105 [2022-11-18 20:05:24,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:24,741 INFO L130 PetriNetUnfolder]: 60/211 cut-off events. [2022-11-18 20:05:24,741 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-11-18 20:05:24,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 211 events. 60/211 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 627 event pairs, 1 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 393. Up to 46 conditions per place. [2022-11-18 20:05:24,743 INFO L137 encePairwiseOnDemand]: 97/105 looper letters, 28 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2022-11-18 20:05:24,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 104 transitions, 343 flow [2022-11-18 20:05:24,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:05:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:05:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2022-11-18 20:05:24,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8027210884353742 [2022-11-18 20:05:24,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2022-11-18 20:05:24,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2022-11-18 20:05:24,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:24,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2022-11-18 20:05:24,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,764 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,764 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 235 flow. Second operand 7 states and 590 transitions. [2022-11-18 20:05:24,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 104 transitions, 343 flow [2022-11-18 20:05:24,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 104 transitions, 334 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:05:24,770 INFO L231 Difference]: Finished difference. Result has 104 places, 94 transitions, 265 flow [2022-11-18 20:05:24,771 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=265, PETRI_PLACES=104, PETRI_TRANSITIONS=94} [2022-11-18 20:05:24,778 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 10 predicate places. [2022-11-18 20:05:24,779 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 94 transitions, 265 flow [2022-11-18 20:05:24,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.28571428571429) internal successors, (569), 7 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:24,781 INFO L209 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] [2022-11-18 20:05:24,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:05:24,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:24,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash 958900308, now seen corresponding path program 4 times [2022-11-18 20:05:24,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:24,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548206916] [2022-11-18 20:05:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:24,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:25,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:25,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548206916] [2022-11-18 20:05:25,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548206916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:25,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:25,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:05:25,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855204685] [2022-11-18 20:05:25,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:25,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:05:25,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:05:25,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:05:25,162 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-11-18 20:05:25,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 94 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:25,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:25,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-11-18 20:05:25,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:25,476 INFO L130 PetriNetUnfolder]: 224/612 cut-off events. [2022-11-18 20:05:25,476 INFO L131 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2022-11-18 20:05:25,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 612 events. 224/612 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3262 event pairs, 41 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 1250. Up to 158 conditions per place. [2022-11-18 20:05:25,482 INFO L137 encePairwiseOnDemand]: 94/105 looper letters, 35 selfloop transitions, 7 changer transitions 38/142 dead transitions. [2022-11-18 20:05:25,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 142 transitions, 598 flow [2022-11-18 20:05:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:05:25,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:05:25,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 748 transitions. [2022-11-18 20:05:25,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7915343915343915 [2022-11-18 20:05:25,485 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 748 transitions. [2022-11-18 20:05:25,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 748 transitions. [2022-11-18 20:05:25,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:25,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 748 transitions. [2022-11-18 20:05:25,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:25,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:25,490 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:25,490 INFO L175 Difference]: Start difference. First operand has 104 places, 94 transitions, 265 flow. Second operand 9 states and 748 transitions. [2022-11-18 20:05:25,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 142 transitions, 598 flow [2022-11-18 20:05:25,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 142 transitions, 582 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:05:25,501 INFO L231 Difference]: Finished difference. Result has 113 places, 95 transitions, 299 flow [2022-11-18 20:05:25,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=299, PETRI_PLACES=113, PETRI_TRANSITIONS=95} [2022-11-18 20:05:25,504 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 19 predicate places. [2022-11-18 20:05:25,505 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 95 transitions, 299 flow [2022-11-18 20:05:25,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:25,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:25,506 INFO L209 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] [2022-11-18 20:05:25,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:05:25,506 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:25,508 INFO L85 PathProgramCache]: Analyzing trace with hash 387501435, now seen corresponding path program 1 times [2022-11-18 20:05:25,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:25,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504518104] [2022-11-18 20:05:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:25,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:25,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:25,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504518104] [2022-11-18 20:05:25,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504518104] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:25,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381757940] [2022-11-18 20:05:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:25,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:25,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:25,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:25,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:05:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:25,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:05:25,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:26,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:26,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381757940] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:26,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:26,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-11-18 20:05:26,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221716119] [2022-11-18 20:05:26,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:26,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:05:26,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:26,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:05:26,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:05:26,282 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-18 20:05:26,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 95 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:26,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:26,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-18 20:05:26,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:26,541 INFO L130 PetriNetUnfolder]: 245/636 cut-off events. [2022-11-18 20:05:26,541 INFO L131 PetriNetUnfolder]: For 688/688 co-relation queries the response was YES. [2022-11-18 20:05:26,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 636 events. 245/636 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3220 event pairs, 5 based on Foata normal form. 15/595 useless extension candidates. Maximal degree in co-relation 1522. Up to 125 conditions per place. [2022-11-18 20:05:26,549 INFO L137 encePairwiseOnDemand]: 96/105 looper letters, 51 selfloop transitions, 22 changer transitions 1/142 dead transitions. [2022-11-18 20:05:26,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 142 transitions, 684 flow [2022-11-18 20:05:26,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:05:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:05:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 632 transitions. [2022-11-18 20:05:26,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-18 20:05:26,552 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 632 transitions. [2022-11-18 20:05:26,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 632 transitions. [2022-11-18 20:05:26,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:26,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 632 transitions. [2022-11-18 20:05:26,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:26,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:26,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:26,559 INFO L175 Difference]: Start difference. First operand has 113 places, 95 transitions, 299 flow. Second operand 7 states and 632 transitions. [2022-11-18 20:05:26,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 142 transitions, 684 flow [2022-11-18 20:05:26,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 142 transitions, 658 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-11-18 20:05:26,569 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 504 flow [2022-11-18 20:05:26,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=504, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2022-11-18 20:05:26,572 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 22 predicate places. [2022-11-18 20:05:26,573 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 504 flow [2022-11-18 20:05:26,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:26,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:26,575 INFO L209 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] [2022-11-18 20:05:26,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:26,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:05:26,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:26,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:26,790 INFO L85 PathProgramCache]: Analyzing trace with hash 604665223, now seen corresponding path program 2 times [2022-11-18 20:05:26,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:26,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683624831] [2022-11-18 20:05:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:26,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:27,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:27,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683624831] [2022-11-18 20:05:27,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683624831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:27,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:27,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:05:27,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298199083] [2022-11-18 20:05:27,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:27,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:05:27,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:27,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:05:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:05:27,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-18 20:05:27,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 504 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:27,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-18 20:05:27,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:27,438 INFO L130 PetriNetUnfolder]: 417/1075 cut-off events. [2022-11-18 20:05:27,438 INFO L131 PetriNetUnfolder]: For 2573/2577 co-relation queries the response was YES. [2022-11-18 20:05:27,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 1075 events. 417/1075 cut-off events. For 2573/2577 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6550 event pairs, 21 based on Foata normal form. 12/993 useless extension candidates. Maximal degree in co-relation 3284. Up to 176 conditions per place. [2022-11-18 20:05:27,452 INFO L137 encePairwiseOnDemand]: 96/105 looper letters, 82 selfloop transitions, 44 changer transitions 0/194 dead transitions. [2022-11-18 20:05:27,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 194 transitions, 1355 flow [2022-11-18 20:05:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:05:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:05:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 812 transitions. [2022-11-18 20:05:27,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592592592592593 [2022-11-18 20:05:27,455 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 812 transitions. [2022-11-18 20:05:27,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 812 transitions. [2022-11-18 20:05:27,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:27,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 812 transitions. [2022-11-18 20:05:27,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.22222222222223) internal successors, (812), 9 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) [2022-11-18 20:05:27,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,460 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,461 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 504 flow. Second operand 9 states and 812 transitions. [2022-11-18 20:05:27,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 194 transitions, 1355 flow [2022-11-18 20:05:27,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 194 transitions, 1355 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:05:27,476 INFO L231 Difference]: Finished difference. Result has 130 places, 141 transitions, 960 flow [2022-11-18 20:05:27,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=960, PETRI_PLACES=130, PETRI_TRANSITIONS=141} [2022-11-18 20:05:27,477 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 36 predicate places. [2022-11-18 20:05:27,477 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 141 transitions, 960 flow [2022-11-18 20:05:27,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:27,478 INFO L209 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] [2022-11-18 20:05:27,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:05:27,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1990119019, now seen corresponding path program 3 times [2022-11-18 20:05:27,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:27,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669343399] [2022-11-18 20:05:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:27,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:27,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:27,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669343399] [2022-11-18 20:05:27,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669343399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:27,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:27,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:05:27,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507774892] [2022-11-18 20:05:27,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:27,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:05:27,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:27,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:05:27,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:05:27,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 105 [2022-11-18 20:05:27,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 141 transitions, 960 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:27,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 105 [2022-11-18 20:05:27,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:27,907 INFO L130 PetriNetUnfolder]: 315/1000 cut-off events. [2022-11-18 20:05:27,907 INFO L131 PetriNetUnfolder]: For 4099/4471 co-relation queries the response was YES. [2022-11-18 20:05:27,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3393 conditions, 1000 events. 315/1000 cut-off events. For 4099/4471 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6845 event pairs, 33 based on Foata normal form. 33/938 useless extension candidates. Maximal degree in co-relation 3368. Up to 174 conditions per place. [2022-11-18 20:05:27,924 INFO L137 encePairwiseOnDemand]: 99/105 looper letters, 20 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2022-11-18 20:05:27,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 148 transitions, 1029 flow [2022-11-18 20:05:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:27,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:05:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-11-18 20:05:27,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8380952380952381 [2022-11-18 20:05:27,926 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-11-18 20:05:27,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-11-18 20:05:27,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:27,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-11-18 20:05:27,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,929 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,929 INFO L175 Difference]: Start difference. First operand has 130 places, 141 transitions, 960 flow. Second operand 5 states and 440 transitions. [2022-11-18 20:05:27,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 148 transitions, 1029 flow [2022-11-18 20:05:27,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 148 transitions, 1021 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-18 20:05:27,950 INFO L231 Difference]: Finished difference. Result has 136 places, 143 transitions, 978 flow [2022-11-18 20:05:27,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=978, PETRI_PLACES=136, PETRI_TRANSITIONS=143} [2022-11-18 20:05:27,951 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 42 predicate places. [2022-11-18 20:05:27,951 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 143 transitions, 978 flow [2022-11-18 20:05:27,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:27,952 INFO L209 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] [2022-11-18 20:05:27,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:05:27,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:27,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:27,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1662102511, now seen corresponding path program 1 times [2022-11-18 20:05:27,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:27,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3072115] [2022-11-18 20:05:27,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:27,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:28,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:28,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3072115] [2022-11-18 20:05:28,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3072115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:28,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773026600] [2022-11-18 20:05:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:28,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:28,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:28,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:28,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:05:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:28,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:05:28,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:28,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:28,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773026600] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:28,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:28,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-11-18 20:05:28,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636422453] [2022-11-18 20:05:28,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:28,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:05:28,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:28,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:05:28,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:05:28,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 105 [2022-11-18 20:05:28,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 143 transitions, 978 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:28,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:28,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 105 [2022-11-18 20:05:28,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:29,004 INFO L130 PetriNetUnfolder]: 749/1939 cut-off events. [2022-11-18 20:05:29,004 INFO L131 PetriNetUnfolder]: For 9574/9601 co-relation queries the response was YES. [2022-11-18 20:05:29,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7561 conditions, 1939 events. 749/1939 cut-off events. For 9574/9601 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14177 event pairs, 43 based on Foata normal form. 36/1901 useless extension candidates. Maximal degree in co-relation 7534. Up to 470 conditions per place. [2022-11-18 20:05:29,035 INFO L137 encePairwiseOnDemand]: 100/105 looper letters, 86 selfloop transitions, 44 changer transitions 0/214 dead transitions. [2022-11-18 20:05:29,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 214 transitions, 1931 flow [2022-11-18 20:05:29,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:05:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:05:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 548 transitions. [2022-11-18 20:05:29,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8698412698412699 [2022-11-18 20:05:29,038 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 548 transitions. [2022-11-18 20:05:29,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 548 transitions. [2022-11-18 20:05:29,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:29,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 548 transitions. [2022-11-18 20:05:29,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:29,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:29,042 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:29,042 INFO L175 Difference]: Start difference. First operand has 136 places, 143 transitions, 978 flow. Second operand 6 states and 548 transitions. [2022-11-18 20:05:29,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 214 transitions, 1931 flow [2022-11-18 20:05:29,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 214 transitions, 1925 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-18 20:05:29,087 INFO L231 Difference]: Finished difference. Result has 143 places, 170 transitions, 1502 flow [2022-11-18 20:05:29,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1502, PETRI_PLACES=143, PETRI_TRANSITIONS=170} [2022-11-18 20:05:29,088 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 49 predicate places. [2022-11-18 20:05:29,088 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 170 transitions, 1502 flow [2022-11-18 20:05:29,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:29,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:29,089 INFO L209 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] [2022-11-18 20:05:29,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:29,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:29,294 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:29,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:29,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2099072245, now seen corresponding path program 2 times [2022-11-18 20:05:29,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:29,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36682394] [2022-11-18 20:05:29,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:29,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:29,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:29,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36682394] [2022-11-18 20:05:29,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36682394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:29,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:29,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:05:29,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732971130] [2022-11-18 20:05:29,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:29,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:05:29,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:29,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:05:29,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:05:29,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 105 [2022-11-18 20:05:29,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 170 transitions, 1502 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:29,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:29,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 105 [2022-11-18 20:05:29,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:30,000 INFO L130 PetriNetUnfolder]: 754/2113 cut-off events. [2022-11-18 20:05:30,000 INFO L131 PetriNetUnfolder]: For 9698/9838 co-relation queries the response was YES. [2022-11-18 20:05:30,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7888 conditions, 2113 events. 754/2113 cut-off events. For 9698/9838 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16479 event pairs, 112 based on Foata normal form. 59/2015 useless extension candidates. Maximal degree in co-relation 7857. Up to 407 conditions per place. [2022-11-18 20:05:30,038 INFO L137 encePairwiseOnDemand]: 99/105 looper letters, 22 selfloop transitions, 5 changer transitions 0/179 dead transitions. [2022-11-18 20:05:30,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 179 transitions, 1586 flow [2022-11-18 20:05:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:05:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2022-11-18 20:05:30,039 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84 [2022-11-18 20:05:30,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2022-11-18 20:05:30,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2022-11-18 20:05:30,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:30,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2022-11-18 20:05:30,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:30,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:30,043 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:30,043 INFO L175 Difference]: Start difference. First operand has 143 places, 170 transitions, 1502 flow. Second operand 5 states and 441 transitions. [2022-11-18 20:05:30,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 179 transitions, 1586 flow [2022-11-18 20:05:30,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 179 transitions, 1584 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-18 20:05:30,092 INFO L231 Difference]: Finished difference. Result has 149 places, 172 transitions, 1526 flow [2022-11-18 20:05:30,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1526, PETRI_PLACES=149, PETRI_TRANSITIONS=172} [2022-11-18 20:05:30,093 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 55 predicate places. [2022-11-18 20:05:30,093 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 172 transitions, 1526 flow [2022-11-18 20:05:30,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:30,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:30,094 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:05:30,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:05:30,094 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:30,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:30,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1741929440, now seen corresponding path program 1 times [2022-11-18 20:05:30,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:30,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171320335] [2022-11-18 20:05:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:30,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:05:30,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:30,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171320335] [2022-11-18 20:05:30,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171320335] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:30,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631571500] [2022-11-18 20:05:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:30,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:30,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:30,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:30,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:05:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:30,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:05:30,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:05:30,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:05:30,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631571500] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:30,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:05:30,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2022-11-18 20:05:30,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953427103] [2022-11-18 20:05:30,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:30,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:05:30,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:30,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:05:30,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:05:30,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-18 20:05:30,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 172 transitions, 1526 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:30,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:30,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-18 20:05:30,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:31,455 INFO L130 PetriNetUnfolder]: 1108/2930 cut-off events. [2022-11-18 20:05:31,458 INFO L131 PetriNetUnfolder]: For 21039/21078 co-relation queries the response was YES. [2022-11-18 20:05:31,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13191 conditions, 2930 events. 1108/2930 cut-off events. For 21039/21078 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 24013 event pairs, 138 based on Foata normal form. 23/2929 useless extension candidates. Maximal degree in co-relation 13158. Up to 1104 conditions per place. [2022-11-18 20:05:31,501 INFO L137 encePairwiseOnDemand]: 94/105 looper letters, 87 selfloop transitions, 84 changer transitions 12/255 dead transitions. [2022-11-18 20:05:31,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 255 transitions, 2935 flow [2022-11-18 20:05:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:05:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:05:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 539 transitions. [2022-11-18 20:05:31,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8555555555555555 [2022-11-18 20:05:31,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 539 transitions. [2022-11-18 20:05:31,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 539 transitions. [2022-11-18 20:05:31,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:31,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 539 transitions. [2022-11-18 20:05:31,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:31,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:31,508 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:31,508 INFO L175 Difference]: Start difference. First operand has 149 places, 172 transitions, 1526 flow. Second operand 6 states and 539 transitions. [2022-11-18 20:05:31,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 255 transitions, 2935 flow [2022-11-18 20:05:31,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 255 transitions, 2931 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:05:31,569 INFO L231 Difference]: Finished difference. Result has 156 places, 217 transitions, 2586 flow [2022-11-18 20:05:31,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2586, PETRI_PLACES=156, PETRI_TRANSITIONS=217} [2022-11-18 20:05:31,570 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 62 predicate places. [2022-11-18 20:05:31,570 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 217 transitions, 2586 flow [2022-11-18 20:05:31,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:31,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:31,571 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:05:31,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:31,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:31,777 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:31,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:31,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1348931140, now seen corresponding path program 2 times [2022-11-18 20:05:31,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:31,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413120917] [2022-11-18 20:05:31,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:31,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:32,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:32,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413120917] [2022-11-18 20:05:32,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413120917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:32,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027754117] [2022-11-18 20:05:32,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:05:32,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:32,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:32,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:32,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:05:32,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:05:32,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:05:32,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:05:32,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:32,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:32,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027754117] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:32,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:32,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-11-18 20:05:32,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415149972] [2022-11-18 20:05:32,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:32,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:05:32,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:32,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:05:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:05:32,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-11-18 20:05:32,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 217 transitions, 2586 flow. Second operand has 14 states, 14 states have (on average 77.78571428571429) internal successors, (1089), 14 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:32,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:32,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-11-18 20:05:32,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:34,465 INFO L130 PetriNetUnfolder]: 2012/5176 cut-off events. [2022-11-18 20:05:34,465 INFO L131 PetriNetUnfolder]: For 42873/42942 co-relation queries the response was YES. [2022-11-18 20:05:34,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24817 conditions, 5176 events. 2012/5176 cut-off events. For 42873/42942 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 48297 event pairs, 93 based on Foata normal form. 89/5238 useless extension candidates. Maximal degree in co-relation 24779. Up to 725 conditions per place. [2022-11-18 20:05:34,545 INFO L137 encePairwiseOnDemand]: 92/105 looper letters, 120 selfloop transitions, 61 changer transitions 164/468 dead transitions. [2022-11-18 20:05:34,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 468 transitions, 6888 flow [2022-11-18 20:05:34,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:05:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:05:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1717 transitions. [2022-11-18 20:05:34,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7786848072562358 [2022-11-18 20:05:34,550 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1717 transitions. [2022-11-18 20:05:34,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1717 transitions. [2022-11-18 20:05:34,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:34,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1717 transitions. [2022-11-18 20:05:34,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 81.76190476190476) internal successors, (1717), 21 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:34,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 105.0) internal successors, (2310), 22 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:34,561 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 105.0) internal successors, (2310), 22 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:34,561 INFO L175 Difference]: Start difference. First operand has 156 places, 217 transitions, 2586 flow. Second operand 21 states and 1717 transitions. [2022-11-18 20:05:34,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 468 transitions, 6888 flow [2022-11-18 20:05:34,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 468 transitions, 6814 flow, removed 37 selfloop flow, removed 0 redundant places. [2022-11-18 20:05:34,778 INFO L231 Difference]: Finished difference. Result has 187 places, 249 transitions, 3150 flow [2022-11-18 20:05:34,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=2516, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3150, PETRI_PLACES=187, PETRI_TRANSITIONS=249} [2022-11-18 20:05:34,780 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 93 predicate places. [2022-11-18 20:05:34,780 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 249 transitions, 3150 flow [2022-11-18 20:05:34,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 77.78571428571429) internal successors, (1089), 14 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:34,781 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:34,781 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:05:34,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:34,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:05:34,988 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:34,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash -824840184, now seen corresponding path program 1 times [2022-11-18 20:05:34,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:34,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517038132] [2022-11-18 20:05:34,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:34,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:35,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:35,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517038132] [2022-11-18 20:05:35,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517038132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:35,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:35,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:05:35,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502528077] [2022-11-18 20:05:35,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:35,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:05:35,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:05:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:05:35,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-11-18 20:05:35,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 249 transitions, 3150 flow. Second operand has 8 states, 8 states have (on average 77.75) internal successors, (622), 8 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:35,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:35,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-11-18 20:05:35,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:36,511 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([264] L71-->L78: Formula: (= v_~pos~0_5 (+ v_~pos~0_6 2)) InVars {~pos~0=v_~pos~0_6} OutVars{~pos~0=v_~pos~0_5} AuxVars[] AssignedVars[~pos~0][127], [1166#(<= (+ (* (div ~d2~0 256) 256) 1) ~d2~0), Black: 690#(<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1), Black: 686#true, Black: 688#(= ~v_assert~0 thread2Thread1of1ForFork2_~lv_assert~1), Black: 177#(= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0), Black: 131#(and (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 648#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 179#(<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1), Black: 175#true, Black: 644#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 1509#(or (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), 676#true, Black: 1674#(and (or (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1) (= (mod ~v_assert~0 256) 0)) (or (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1))), Black: 1172#true, Black: 1513#(or (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1) (= (mod ~v_assert~0 256) 0)), Black: 1162#true, Black: 146#(<= (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) 1) thread1Thread1of1ForFork1_~lv_assert~0), Black: 140#true, Black: 666#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 662#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1))), Black: 658#(= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0), Black: 659#(<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 668#(and (<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1)) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), 1177#(<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1), Black: 2201#(and (<= thread1Thread1of1ForFork1_~lv_assert~0 1) (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0) (<= 0 ~pos~0)), Black: 2199#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), Black: 2193#(and (= ~pos~0 0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), Black: 2211#(and (<= thread1Thread1of1ForFork1_~lv_assert~0 1) (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 ~pos~0) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0)), Black: 164#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0)), 664#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1)) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 166#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0) (<= (div thread1Thread1of1ForFork1_~lv_assert~0 256) 0) (<= 0 ~pos~0)), Black: 2203#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0)), Black: 680#(<= (+ (* 256 (div ~d1~0 256)) 1) ~d1~0), Black: 1687#(<= 1 ~pos~0), Black: 2191#(and (= ~pos~0 0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))), 646#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 2197#(and (<= 0 ~pos~0) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), Black: 158#(<= 0 ~pos~0), 150#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 1686#(<= 0 ~pos~0), Black: 2209#(and (<= thread1Thread1of1ForFork1_~lv_assert~0 1) (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0)), 123#(and (= ~v_assert~0 thread2Thread1of1ForFork2_~lv_assert~1) (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), 111#true, 24#L110-4true, 44#L54true, 50#L78true, 2226#true, 2195#(and (<= 1 ~pos~0) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), 1155#(and (= ~v_assert~0 thread2Thread1of1ForFork2_~lv_assert~1) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 118#(and (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0))]) [2022-11-18 20:05:36,512 INFO L383 tUnfolder$Statistics]: this new event has 72 ancestors and is cut-off event [2022-11-18 20:05:36,512 INFO L386 tUnfolder$Statistics]: existing Event has 57 ancestors and is cut-off event [2022-11-18 20:05:36,512 INFO L386 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-11-18 20:05:36,512 INFO L386 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-11-18 20:05:37,352 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([264] L71-->L78: Formula: (= v_~pos~0_5 (+ v_~pos~0_6 2)) InVars {~pos~0=v_~pos~0_6} OutVars{~pos~0=v_~pos~0_5} AuxVars[] AssignedVars[~pos~0][127], [1166#(<= (+ (* (div ~d2~0 256) 256) 1) ~d2~0), Black: 690#(<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1), Black: 686#true, Black: 688#(= ~v_assert~0 thread2Thread1of1ForFork2_~lv_assert~1), Black: 177#(= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0), Black: 131#(and (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 648#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 179#(<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1), Black: 175#true, Black: 644#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 1509#(or (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), 676#true, Black: 1674#(and (or (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1) (= (mod ~v_assert~0 256) 0)) (or (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1))), Black: 1172#true, Black: 1513#(or (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1) (= (mod ~v_assert~0 256) 0)), Black: 1162#true, Black: 146#(<= (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) 1) thread1Thread1of1ForFork1_~lv_assert~0), Black: 140#true, Black: 666#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 662#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1))), Black: 658#(= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0), Black: 659#(<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 668#(and (<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1)) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), 1177#(<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1), Black: 2201#(and (<= thread1Thread1of1ForFork1_~lv_assert~0 1) (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0) (<= 0 ~pos~0)), Black: 2199#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), Black: 2193#(and (= ~pos~0 0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), Black: 2211#(and (<= thread1Thread1of1ForFork1_~lv_assert~0 1) (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 ~pos~0) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0)), Black: 164#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0)), 664#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1)) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 166#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0) (<= (div thread1Thread1of1ForFork1_~lv_assert~0 256) 0) (<= 0 ~pos~0)), Black: 2203#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0)), Black: 680#(<= (+ (* 256 (div ~d1~0 256)) 1) ~d1~0), Black: 1687#(<= 1 ~pos~0), Black: 2191#(and (= ~pos~0 0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))), 646#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 2197#(and (<= 0 ~pos~0) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), Black: 158#(<= 0 ~pos~0), 150#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 1686#(<= 0 ~pos~0), Black: 2209#(and (<= thread1Thread1of1ForFork1_~lv_assert~0 1) (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0)), 4#L111-4true, 74#thread3ENTRYtrue, 123#(and (= ~v_assert~0 thread2Thread1of1ForFork2_~lv_assert~1) (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), 111#true, 44#L54true, 50#L78true, 2226#true, 2195#(and (<= 1 ~pos~0) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), 1155#(and (= ~v_assert~0 thread2Thread1of1ForFork2_~lv_assert~1) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 118#(and (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0))]) [2022-11-18 20:05:37,352 INFO L383 tUnfolder$Statistics]: this new event has 78 ancestors and is cut-off event [2022-11-18 20:05:37,352 INFO L386 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2022-11-18 20:05:37,352 INFO L386 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2022-11-18 20:05:37,352 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-11-18 20:05:37,564 INFO L130 PetriNetUnfolder]: 2690/6616 cut-off events. [2022-11-18 20:05:37,564 INFO L131 PetriNetUnfolder]: For 78451/78568 co-relation queries the response was YES. [2022-11-18 20:05:37,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38407 conditions, 6616 events. 2690/6616 cut-off events. For 78451/78568 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 62512 event pairs, 287 based on Foata normal form. 104/6687 useless extension candidates. Maximal degree in co-relation 38357. Up to 1731 conditions per place. [2022-11-18 20:05:37,685 INFO L137 encePairwiseOnDemand]: 93/105 looper letters, 185 selfloop transitions, 50 changer transitions 104/462 dead transitions. [2022-11-18 20:05:37,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 462 transitions, 7220 flow [2022-11-18 20:05:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:05:37,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:05:37,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 995 transitions. [2022-11-18 20:05:37,688 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7896825396825397 [2022-11-18 20:05:37,688 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 995 transitions. [2022-11-18 20:05:37,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 995 transitions. [2022-11-18 20:05:37,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:37,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 995 transitions. [2022-11-18 20:05:37,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 82.91666666666667) internal successors, (995), 12 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:37,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:37,694 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:37,695 INFO L175 Difference]: Start difference. First operand has 187 places, 249 transitions, 3150 flow. Second operand 12 states and 995 transitions. [2022-11-18 20:05:37,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 462 transitions, 7220 flow [2022-11-18 20:05:37,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 462 transitions, 6840 flow, removed 187 selfloop flow, removed 7 redundant places. [2022-11-18 20:05:37,990 INFO L231 Difference]: Finished difference. Result has 190 places, 288 transitions, 3962 flow [2022-11-18 20:05:37,990 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3962, PETRI_PLACES=190, PETRI_TRANSITIONS=288} [2022-11-18 20:05:37,992 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 96 predicate places. [2022-11-18 20:05:37,992 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 288 transitions, 3962 flow [2022-11-18 20:05:37,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.75) internal successors, (622), 8 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:37,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:37,993 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:37,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:05:37,993 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:37,999 INFO L85 PathProgramCache]: Analyzing trace with hash 632116997, now seen corresponding path program 3 times [2022-11-18 20:05:37,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:38,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691004601] [2022-11-18 20:05:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:38,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:05:38,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:38,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691004601] [2022-11-18 20:05:38,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691004601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:38,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:38,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:05:38,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901925389] [2022-11-18 20:05:38,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:38,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:38,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:38,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:38,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:38,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 105 [2022-11-18 20:05:38,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 288 transitions, 3962 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:38,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:38,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 105 [2022-11-18 20:05:38,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:40,302 INFO L130 PetriNetUnfolder]: 2068/6291 cut-off events. [2022-11-18 20:05:40,302 INFO L131 PetriNetUnfolder]: For 74272/74755 co-relation queries the response was YES. [2022-11-18 20:05:40,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34417 conditions, 6291 events. 2068/6291 cut-off events. For 74272/74755 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 63984 event pairs, 273 based on Foata normal form. 315/6490 useless extension candidates. Maximal degree in co-relation 34362. Up to 928 conditions per place. [2022-11-18 20:05:40,419 INFO L137 encePairwiseOnDemand]: 100/105 looper letters, 36 selfloop transitions, 5 changer transitions 0/277 dead transitions. [2022-11-18 20:05:40,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 277 transitions, 3605 flow [2022-11-18 20:05:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:05:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:05:40,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2022-11-18 20:05:40,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9023809523809524 [2022-11-18 20:05:40,421 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2022-11-18 20:05:40,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2022-11-18 20:05:40,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:40,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2022-11-18 20:05:40,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:40,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:40,426 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:40,426 INFO L175 Difference]: Start difference. First operand has 190 places, 288 transitions, 3962 flow. Second operand 4 states and 379 transitions. [2022-11-18 20:05:40,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 277 transitions, 3605 flow [2022-11-18 20:05:40,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 277 transitions, 3406 flow, removed 79 selfloop flow, removed 10 redundant places. [2022-11-18 20:05:40,774 INFO L231 Difference]: Finished difference. Result has 183 places, 265 transitions, 3308 flow [2022-11-18 20:05:40,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=3270, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3308, PETRI_PLACES=183, PETRI_TRANSITIONS=265} [2022-11-18 20:05:40,776 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 89 predicate places. [2022-11-18 20:05:40,776 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 265 transitions, 3308 flow [2022-11-18 20:05:40,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:40,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:40,777 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:40,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:05:40,777 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:40,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:40,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2019362171, now seen corresponding path program 2 times [2022-11-18 20:05:40,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:40,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962033358] [2022-11-18 20:05:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:40,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:05:40,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:40,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962033358] [2022-11-18 20:05:40,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962033358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:40,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:40,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:05:40,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93381663] [2022-11-18 20:05:40,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:40,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:40,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:40,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:40,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:40,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 105 [2022-11-18 20:05:40,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 265 transitions, 3308 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:40,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:40,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 105 [2022-11-18 20:05:40,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:42,902 INFO L130 PetriNetUnfolder]: 2155/6423 cut-off events. [2022-11-18 20:05:42,903 INFO L131 PetriNetUnfolder]: For 67333/67627 co-relation queries the response was YES. [2022-11-18 20:05:42,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35048 conditions, 6423 events. 2155/6423 cut-off events. For 67333/67627 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 61700 event pairs, 370 based on Foata normal form. 227/6460 useless extension candidates. Maximal degree in co-relation 34996. Up to 959 conditions per place. [2022-11-18 20:05:43,018 INFO L137 encePairwiseOnDemand]: 100/105 looper letters, 41 selfloop transitions, 5 changer transitions 3/264 dead transitions. [2022-11-18 20:05:43,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 264 transitions, 3158 flow [2022-11-18 20:05:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:05:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:05:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-11-18 20:05:43,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8976190476190476 [2022-11-18 20:05:43,022 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-11-18 20:05:43,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-11-18 20:05:43,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:43,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-11-18 20:05:43,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:43,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:43,025 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:43,025 INFO L175 Difference]: Start difference. First operand has 183 places, 265 transitions, 3308 flow. Second operand 4 states and 377 transitions. [2022-11-18 20:05:43,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 264 transitions, 3158 flow [2022-11-18 20:05:43,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 264 transitions, 3136 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-18 20:05:43,332 INFO L231 Difference]: Finished difference. Result has 186 places, 244 transitions, 2923 flow [2022-11-18 20:05:43,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2923, PETRI_PLACES=186, PETRI_TRANSITIONS=244} [2022-11-18 20:05:43,333 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 92 predicate places. [2022-11-18 20:05:43,333 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 244 transitions, 2923 flow [2022-11-18 20:05:43,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:43,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:43,333 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:05:43,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:05:43,334 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:43,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:43,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1981305758, now seen corresponding path program 1 times [2022-11-18 20:05:43,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:43,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31570813] [2022-11-18 20:05:43,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:43,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:43,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:43,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31570813] [2022-11-18 20:05:43,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31570813] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:43,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272978966] [2022-11-18 20:05:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:43,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:43,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:43,716 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:43,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:05:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:43,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:05:43,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:44,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:44,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272978966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:44,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:44,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 15 [2022-11-18 20:05:44,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555799418] [2022-11-18 20:05:44,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:44,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:05:44,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:44,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:05:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:05:44,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-11-18 20:05:44,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 244 transitions, 2923 flow. Second operand has 15 states, 15 states have (on average 77.93333333333334) internal successors, (1169), 15 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:44,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:44,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-11-18 20:05:44,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:47,493 INFO L130 PetriNetUnfolder]: 3882/10409 cut-off events. [2022-11-18 20:05:47,494 INFO L131 PetriNetUnfolder]: For 133250/133478 co-relation queries the response was YES. [2022-11-18 20:05:47,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63717 conditions, 10409 events. 3882/10409 cut-off events. For 133250/133478 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 106948 event pairs, 174 based on Foata normal form. 200/10567 useless extension candidates. Maximal degree in co-relation 63664. Up to 1751 conditions per place. [2022-11-18 20:05:47,663 INFO L137 encePairwiseOnDemand]: 92/105 looper letters, 103 selfloop transitions, 172 changer transitions 180/555 dead transitions. [2022-11-18 20:05:47,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 555 transitions, 9213 flow [2022-11-18 20:05:47,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:05:47,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 20:05:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2110 transitions. [2022-11-18 20:05:47,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7728937728937729 [2022-11-18 20:05:47,667 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2110 transitions. [2022-11-18 20:05:47,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2110 transitions. [2022-11-18 20:05:47,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:47,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2110 transitions. [2022-11-18 20:05:47,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 81.15384615384616) internal successors, (2110), 26 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:47,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 105.0) internal successors, (2835), 27 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:47,678 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 105.0) internal successors, (2835), 27 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:47,679 INFO L175 Difference]: Start difference. First operand has 186 places, 244 transitions, 2923 flow. Second operand 26 states and 2110 transitions. [2022-11-18 20:05:47,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 555 transitions, 9213 flow [2022-11-18 20:05:48,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 555 transitions, 9213 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:05:48,119 INFO L231 Difference]: Finished difference. Result has 225 places, 315 transitions, 4725 flow [2022-11-18 20:05:48,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4725, PETRI_PLACES=225, PETRI_TRANSITIONS=315} [2022-11-18 20:05:48,120 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 131 predicate places. [2022-11-18 20:05:48,121 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 315 transitions, 4725 flow [2022-11-18 20:05:48,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 77.93333333333334) internal successors, (1169), 15 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:48,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:48,122 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:05:48,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 20:05:48,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:48,327 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:48,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:48,327 INFO L85 PathProgramCache]: Analyzing trace with hash 778447022, now seen corresponding path program 2 times [2022-11-18 20:05:48,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:48,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255864133] [2022-11-18 20:05:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:48,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:48,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:48,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255864133] [2022-11-18 20:05:48,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255864133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:48,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103767659] [2022-11-18 20:05:48,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:05:48,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:48,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:48,643 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:48,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:05:48,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:05:48,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:05:48,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:05:48,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:49,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:49,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103767659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:49,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:49,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 15 [2022-11-18 20:05:49,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108934357] [2022-11-18 20:05:49,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:49,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:05:49,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:49,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:05:49,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:05:49,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-11-18 20:05:49,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 315 transitions, 4725 flow. Second operand has 15 states, 15 states have (on average 77.93333333333334) internal successors, (1169), 15 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:49,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:49,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-11-18 20:05:49,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:54,152 INFO L130 PetriNetUnfolder]: 5734/14834 cut-off events. [2022-11-18 20:05:54,153 INFO L131 PetriNetUnfolder]: For 261420/261893 co-relation queries the response was YES. [2022-11-18 20:05:54,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104158 conditions, 14834 events. 5734/14834 cut-off events. For 261420/261893 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 163721 event pairs, 453 based on Foata normal form. 149/14931 useless extension candidates. Maximal degree in co-relation 104090. Up to 2724 conditions per place. [2022-11-18 20:05:54,432 INFO L137 encePairwiseOnDemand]: 92/105 looper letters, 154 selfloop transitions, 281 changer transitions 163/698 dead transitions. [2022-11-18 20:05:54,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 698 transitions, 13347 flow [2022-11-18 20:05:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:05:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 20:05:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2106 transitions. [2022-11-18 20:05:54,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2022-11-18 20:05:54,441 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2106 transitions. [2022-11-18 20:05:54,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2106 transitions. [2022-11-18 20:05:54,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:54,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2106 transitions. [2022-11-18 20:05:54,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 81.0) internal successors, (2106), 26 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:54,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 105.0) internal successors, (2835), 27 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:54,470 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 105.0) internal successors, (2835), 27 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:54,470 INFO L175 Difference]: Start difference. First operand has 225 places, 315 transitions, 4725 flow. Second operand 26 states and 2106 transitions. [2022-11-18 20:05:54,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 698 transitions, 13347 flow [2022-11-18 20:05:55,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 698 transitions, 12098 flow, removed 506 selfloop flow, removed 14 redundant places. [2022-11-18 20:05:56,015 INFO L231 Difference]: Finished difference. Result has 246 places, 473 transitions, 7892 flow [2022-11-18 20:05:56,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=4277, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7892, PETRI_PLACES=246, PETRI_TRANSITIONS=473} [2022-11-18 20:05:56,016 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 152 predicate places. [2022-11-18 20:05:56,016 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 473 transitions, 7892 flow [2022-11-18 20:05:56,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 77.93333333333334) internal successors, (1169), 15 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:56,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:56,018 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:05:56,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:56,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:05:56,224 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:05:56,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2022043096, now seen corresponding path program 3 times [2022-11-18 20:05:56,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:56,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203008509] [2022-11-18 20:05:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:56,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:56,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:56,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203008509] [2022-11-18 20:05:56,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203008509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:56,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982062785] [2022-11-18 20:05:56,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:05:56,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:56,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:56,684 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:56,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:05:56,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:05:56,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:05:56,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:05:56,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:56,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:57,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982062785] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:57,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:57,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-11-18 20:05:57,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612059252] [2022-11-18 20:05:57,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:57,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:05:57,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:57,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:05:57,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:05:57,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-11-18 20:05:57,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 473 transitions, 7892 flow. Second operand has 16 states, 16 states have (on average 77.75) internal successors, (1244), 16 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:57,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:57,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-11-18 20:05:57,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:01,898 INFO L130 PetriNetUnfolder]: 5684/13771 cut-off events. [2022-11-18 20:06:01,898 INFO L131 PetriNetUnfolder]: For 243893/244439 co-relation queries the response was YES. [2022-11-18 20:06:02,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100279 conditions, 13771 events. 5684/13771 cut-off events. For 243893/244439 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 148790 event pairs, 104 based on Foata normal form. 211/13954 useless extension candidates. Maximal degree in co-relation 100202. Up to 2730 conditions per place. [2022-11-18 20:06:02,094 INFO L137 encePairwiseOnDemand]: 92/105 looper letters, 0 selfloop transitions, 0 changer transitions 768/768 dead transitions. [2022-11-18 20:06:02,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 768 transitions, 15443 flow [2022-11-18 20:06:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:06:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-18 20:06:02,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2171 transitions. [2022-11-18 20:06:02,099 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7657848324514991 [2022-11-18 20:06:02,100 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2171 transitions. [2022-11-18 20:06:02,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2171 transitions. [2022-11-18 20:06:02,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:02,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2171 transitions. [2022-11-18 20:06:02,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 80.4074074074074) internal successors, (2171), 27 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:02,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 105.0) internal successors, (2940), 28 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:02,112 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 105.0) internal successors, (2940), 28 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:02,112 INFO L175 Difference]: Start difference. First operand has 246 places, 473 transitions, 7892 flow. Second operand 27 states and 2171 transitions. [2022-11-18 20:06:02,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 768 transitions, 15443 flow [2022-11-18 20:06:04,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 768 transitions, 14667 flow, removed 295 selfloop flow, removed 16 redundant places. [2022-11-18 20:06:04,273 INFO L231 Difference]: Finished difference. Result has 235 places, 0 transitions, 0 flow [2022-11-18 20:06:04,273 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=7384, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=0, PETRI_PLACES=235, PETRI_TRANSITIONS=0} [2022-11-18 20:06:04,274 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 141 predicate places. [2022-11-18 20:06:04,274 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 0 transitions, 0 flow [2022-11-18 20:06:04,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 77.75) internal successors, (1244), 16 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:04,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-18 20:06:04,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-18 20:06:04,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-18 20:06:04,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-18 20:06:04,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:04,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:06:04,478 INFO L444 BasicCegarLoop]: Path program histogram: [4, 3, 3, 3, 2, 2, 1] [2022-11-18 20:06:04,481 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:06:04,481 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:06:04,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:06:04 BasicIcfg [2022-11-18 20:06:04,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:06:04,487 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:06:04,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:06:04,487 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:06:04,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:05:21" (3/4) ... [2022-11-18 20:06:04,490 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:06:04,497 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 20:06:04,497 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 20:06:04,497 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-18 20:06:04,502 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-18 20:06:04,502 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:06:04,502 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:06:04,502 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:06:04,537 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:06:04,537 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:06:04,538 INFO L158 Benchmark]: Toolchain (without parser) took 43974.79ms. Allocated memory was 119.5MB in the beginning and 9.8GB in the end (delta: 9.7GB). Free memory was 87.0MB in the beginning and 8.6GB in the end (delta: -8.6GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-18 20:06:04,539 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory is still 45.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:06:04,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.89ms. Allocated memory is still 119.5MB. Free memory was 86.8MB in the beginning and 94.5MB in the end (delta: -7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:06:04,539 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.07ms. Allocated memory is still 119.5MB. Free memory was 94.5MB in the beginning and 92.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:06:04,540 INFO L158 Benchmark]: Boogie Preprocessor took 53.90ms. Allocated memory is still 119.5MB. Free memory was 92.8MB in the beginning and 91.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:06:04,540 INFO L158 Benchmark]: RCFGBuilder took 587.42ms. Allocated memory is still 119.5MB. Free memory was 91.3MB in the beginning and 76.9MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-18 20:06:04,540 INFO L158 Benchmark]: TraceAbstraction took 42842.53ms. Allocated memory was 119.5MB in the beginning and 9.8GB in the end (delta: 9.7GB). Free memory was 76.5MB in the beginning and 8.6GB in the end (delta: -8.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-11-18 20:06:04,541 INFO L158 Benchmark]: Witness Printer took 50.94ms. Allocated memory is still 9.8GB. Free memory was 8.6GB in the beginning and 8.6GB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:06:04,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory is still 45.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.89ms. Allocated memory is still 119.5MB. Free memory was 86.8MB in the beginning and 94.5MB in the end (delta: -7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.07ms. Allocated memory is still 119.5MB. Free memory was 94.5MB in the beginning and 92.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.90ms. Allocated memory is still 119.5MB. Free memory was 92.8MB in the beginning and 91.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 587.42ms. Allocated memory is still 119.5MB. Free memory was 91.3MB in the beginning and 76.9MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 42842.53ms. Allocated memory was 119.5MB in the beginning and 9.8GB in the end (delta: 9.7GB). Free memory was 76.5MB in the beginning and 8.6GB in the end (delta: -8.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 50.94ms. Allocated memory is still 9.8GB. Free memory was 8.6GB in the beginning and 8.6GB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 116]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 126 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 42.6s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 31.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1176 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1176 mSDsluCounter, 770 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 552 mSDsCounter, 201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2802 IncrementalHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 201 mSolverCounterUnsat, 218 mSDtfsCounter, 2802 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1407 GetRequests, 1186 SyntacticMatches, 24 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7892occurred in iteration=17, InterpolantAutomatonStates: 188, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 2060 NumberOfCodeBlocks, 2060 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 2629 ConstructedInterpolants, 0 QuantifiedInterpolants, 7306 SizeOfPredicates, 44 NumberOfNonLiveVariables, 1505 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 32 InterpolantComputations, 12 PerfectInterpolantSequences, 106/191 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:06:04,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf3fd2c-e003-4a96-8762-cdf44bdfd1fb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE