./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/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_b917c566-673d-416f-a887-e67d05f2ce95/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/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_b917c566-673d-416f-a887-e67d05f2ce95/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 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --- 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 20:54:55,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:54:55,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:54:55,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:54:55,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:54:55,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:54:55,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:54:55,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:54:55,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:54:55,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:54:55,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:54:55,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:54:55,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:54:55,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:54:55,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:54:55,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:54:55,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:54:55,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:54:55,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:54:55,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:54:55,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:54:55,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:54:55,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:54:55,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:54:55,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:54:55,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:54:55,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:54:55,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:54:55,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:54:55,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:54:55,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:54:55,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:54:55,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:54:55,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:54:55,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:54:55,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:54:55,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:54:55,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:54:55,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:54:55,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:54:55,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:54:55,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:54:55,216 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:54:55,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:54:55,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:54:55,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:54:55,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:54:55,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:54:55,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:54:55,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:54:55,219 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:54:55,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:54:55,220 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:54:55,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:54:55,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:54:55,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:54:55,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:54:55,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:54:55,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:54:55,221 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:54:55,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:54:55,222 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:54:55,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:54:55,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:54:55,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:54:55,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:54:55,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:54:55,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:54:55,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:54:55,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:54:55,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:54:55,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:54:55,224 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:54:55,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:54:55,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:54:55,225 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_b917c566-673d-416f-a887-e67d05f2ce95/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2022-11-18 20:54:55,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:54:55,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:54:55,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:54:55,561 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:54:55,562 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:54:55,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-11-18 20:54:55,639 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/bin/uautomizer-TMbwUNV5ro/data/c4c616e33/feeae17f08ba43b8a9d27f2bf5b69817/FLAG23219a124 [2022-11-18 20:54:56,166 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:54:56,167 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-11-18 20:54:56,184 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/bin/uautomizer-TMbwUNV5ro/data/c4c616e33/feeae17f08ba43b8a9d27f2bf5b69817/FLAG23219a124 [2022-11-18 20:54:56,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/bin/uautomizer-TMbwUNV5ro/data/c4c616e33/feeae17f08ba43b8a9d27f2bf5b69817 [2022-11-18 20:54:56,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:54:56,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:54:56,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:54:56,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:54:56,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:54:56,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c96cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56, skipping insertion in model container [2022-11-18 20:54:56,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:54:56,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:54:56,827 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_b917c566-673d-416f-a887-e67d05f2ce95/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-11-18 20:54:56,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:54:56,842 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:54:56,872 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_b917c566-673d-416f-a887-e67d05f2ce95/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-11-18 20:54:56,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:54:56,888 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:54:56,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56 WrapperNode [2022-11-18 20:54:56,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:54:56,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:54:56,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:54:56,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:54:56,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,935 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2022-11-18 20:54:56,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:54:56,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:54:56,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:54:56,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:54:56,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,960 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:54:56,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:54:56,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:54:56,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:54:56,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56" (1/1) ... [2022-11-18 20:54:56,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:54:57,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:57,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:54:57,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b917c566-673d-416f-a887-e67d05f2ce95/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:54:57,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:54:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:54:57,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:54:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:54:57,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:54:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:54:57,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:54:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 20:54:57,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 20:54:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:54:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:54:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:54:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:54:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:54:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:54:57,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:54:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:54:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:54:57,092 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 20:54:57,212 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:54:57,214 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:54:57,551 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:54:57,692 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:54:57,706 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:54:57,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:54:57 BoogieIcfgContainer [2022-11-18 20:54:57,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:54:57,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:54:57,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:54:57,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:54:57,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:54:56" (1/3) ... [2022-11-18 20:54:57,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766d28c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:54:57, skipping insertion in model container [2022-11-18 20:54:57,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:56" (2/3) ... [2022-11-18 20:54:57,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766d28c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:54:57, skipping insertion in model container [2022-11-18 20:54:57,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:54:57" (3/3) ... [2022-11-18 20:54:57,738 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2022-11-18 20:54:57,748 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:54:57,762 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:54:57,763 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:54:57,763 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:54:57,965 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:54:58,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2022-11-18 20:54:58,180 INFO L130 PetriNetUnfolder]: 2/134 cut-off events. [2022-11-18 20:54:58,181 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:54:58,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 2/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2022-11-18 20:54:58,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2022-11-18 20:54:58,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2022-11-18 20:54:58,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:54:58,236 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;@e622e0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:54:58,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 20:54:58,347 INFO L130 PetriNetUnfolder]: 2/120 cut-off events. [2022-11-18 20:54:58,347 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:54:58,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:58,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:58,350 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 2 more)] === [2022-11-18 20:54:58,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:58,373 INFO L85 PathProgramCache]: Analyzing trace with hash -333621011, now seen corresponding path program 1 times [2022-11-18 20:54:58,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:58,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658085213] [2022-11-18 20:54:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:58,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:59,722 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 20:54:59,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:59,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658085213] [2022-11-18 20:54:59,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658085213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:59,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:59,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:54:59,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294041128] [2022-11-18 20:54:59,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:59,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:54:59,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:59,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:54:59,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:54:59,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-11-18 20:54:59,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 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 20:54:59,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:59,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-11-18 20:54:59,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:00,009 INFO L130 PetriNetUnfolder]: 58/329 cut-off events. [2022-11-18 20:55:00,009 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-18 20:55:00,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 329 events. 58/329 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1223 event pairs, 13 based on Foata normal form. 10/330 useless extension candidates. Maximal degree in co-relation 376. Up to 100 conditions per place. [2022-11-18 20:55:00,017 INFO L137 encePairwiseOnDemand]: 133/138 looper letters, 16 selfloop transitions, 2 changer transitions 2/123 dead transitions. [2022-11-18 20:55:00,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 312 flow [2022-11-18 20:55:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:55:00,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:55:00,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-11-18 20:55:00,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-11-18 20:55:00,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-11-18 20:55:00,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-11-18 20:55:00,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:00,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-11-18 20:55:00,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 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 20:55:00,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 20:55:00,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 20:55:00,072 INFO L175 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 384 transitions. [2022-11-18 20:55:00,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 312 flow [2022-11-18 20:55:00,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 292 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 20:55:00,086 INFO L231 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2022-11-18 20:55:00,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2022-11-18 20:55:00,094 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-11-18 20:55:00,095 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2022-11-18 20:55:00,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 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 20:55:00,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:00,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:00,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:55:00,097 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 2 more)] === [2022-11-18 20:55:00,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:00,097 INFO L85 PathProgramCache]: Analyzing trace with hash -635254733, now seen corresponding path program 2 times [2022-11-18 20:55:00,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:00,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979820546] [2022-11-18 20:55:00,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:00,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:04,447 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 20:55:04,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:04,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979820546] [2022-11-18 20:55:04,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979820546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:04,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:04,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 20:55:04,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425276611] [2022-11-18 20:55:04,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:04,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:55:04,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:04,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:55:04,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:55:04,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-18 20:55:04,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 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 20:55:04,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:04,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-18 20:55:04,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:09,721 INFO L130 PetriNetUnfolder]: 7174/14147 cut-off events. [2022-11-18 20:55:09,721 INFO L131 PetriNetUnfolder]: For 1060/1060 co-relation queries the response was YES. [2022-11-18 20:55:09,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25835 conditions, 14147 events. 7174/14147 cut-off events. For 1060/1060 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 124148 event pairs, 973 based on Foata normal form. 1/14099 useless extension candidates. Maximal degree in co-relation 18193. Up to 3726 conditions per place. [2022-11-18 20:55:09,844 INFO L137 encePairwiseOnDemand]: 118/138 looper letters, 200 selfloop transitions, 18 changer transitions 13/300 dead transitions. [2022-11-18 20:55:09,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 300 transitions, 1129 flow [2022-11-18 20:55:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:55:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:55:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1592 transitions. [2022-11-18 20:55:09,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7210144927536232 [2022-11-18 20:55:09,851 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1592 transitions. [2022-11-18 20:55:09,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1592 transitions. [2022-11-18 20:55:09,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:09,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1592 transitions. [2022-11-18 20:55:09,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.5) internal successors, (1592), 16 states have internal predecessors, (1592), 0 states have call successors, (0), 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 20:55:09,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 20:55:09,865 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 20:55:09,865 INFO L175 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 16 states and 1592 transitions. [2022-11-18 20:55:09,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 300 transitions, 1129 flow [2022-11-18 20:55:09,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 300 transitions, 1125 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:55:09,884 INFO L231 Difference]: Finished difference. Result has 152 places, 130 transitions, 377 flow [2022-11-18 20:55:09,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=377, PETRI_PLACES=152, PETRI_TRANSITIONS=130} [2022-11-18 20:55:09,885 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 20 predicate places. [2022-11-18 20:55:09,885 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 130 transitions, 377 flow [2022-11-18 20:55:09,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 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 20:55:09,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:09,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:09,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:55:09,888 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 2 more)] === [2022-11-18 20:55:09,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1721550817, now seen corresponding path program 3 times [2022-11-18 20:55:09,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:09,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308590294] [2022-11-18 20:55:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:09,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:10,225 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 20:55:10,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:10,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308590294] [2022-11-18 20:55:10,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308590294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:10,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:10,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:55:10,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966180606] [2022-11-18 20:55:10,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:10,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:55:10,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:10,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:55:10,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:55:10,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-11-18 20:55:10,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 130 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 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 20:55:10,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:10,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-11-18 20:55:10,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:10,564 INFO L130 PetriNetUnfolder]: 342/1726 cut-off events. [2022-11-18 20:55:10,564 INFO L131 PetriNetUnfolder]: For 487/500 co-relation queries the response was YES. [2022-11-18 20:55:10,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 1726 events. 342/1726 cut-off events. For 487/500 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15020 event pairs, 164 based on Foata normal form. 38/1666 useless extension candidates. Maximal degree in co-relation 3135. Up to 489 conditions per place. [2022-11-18 20:55:10,579 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-11-18 20:55:10,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 134 transitions, 425 flow [2022-11-18 20:55:10,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:55:10,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:55:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-11-18 20:55:10,581 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2022-11-18 20:55:10,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-11-18 20:55:10,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-11-18 20:55:10,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:10,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-11-18 20:55:10,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 20:55:10,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 20:55:10,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 20:55:10,585 INFO L175 Difference]: Start difference. First operand has 152 places, 130 transitions, 377 flow. Second operand 3 states and 382 transitions. [2022-11-18 20:55:10,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 134 transitions, 425 flow [2022-11-18 20:55:10,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 134 transitions, 414 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-18 20:55:10,597 INFO L231 Difference]: Finished difference. Result has 146 places, 130 transitions, 374 flow [2022-11-18 20:55:10,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=146, PETRI_TRANSITIONS=130} [2022-11-18 20:55:10,599 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 14 predicate places. [2022-11-18 20:55:10,599 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 130 transitions, 374 flow [2022-11-18 20:55:10,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 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 20:55:10,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:10,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:10,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:55:10,600 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 2 more)] === [2022-11-18 20:55:10,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:10,601 INFO L85 PathProgramCache]: Analyzing trace with hash 911707567, now seen corresponding path program 4 times [2022-11-18 20:55:10,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:10,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598335400] [2022-11-18 20:55:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:10,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:10,882 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 20:55:10,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:10,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598335400] [2022-11-18 20:55:10,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598335400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:10,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:10,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:55:10,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242206056] [2022-11-18 20:55:10,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:10,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:55:10,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:10,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:55:10,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:55:10,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-11-18 20:55:10,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 130 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 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 20:55:10,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:10,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-11-18 20:55:10,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:11,200 INFO L130 PetriNetUnfolder]: 257/1474 cut-off events. [2022-11-18 20:55:11,201 INFO L131 PetriNetUnfolder]: For 378/394 co-relation queries the response was YES. [2022-11-18 20:55:11,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 1474 events. 257/1474 cut-off events. For 378/394 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 12056 event pairs, 173 based on Foata normal form. 20/1404 useless extension candidates. Maximal degree in co-relation 2443. Up to 440 conditions per place. [2022-11-18 20:55:11,211 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-11-18 20:55:11,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 134 transitions, 421 flow [2022-11-18 20:55:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:55:11,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:55:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-11-18 20:55:11,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-11-18 20:55:11,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-11-18 20:55:11,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-11-18 20:55:11,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:11,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-11-18 20:55:11,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 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 20:55:11,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 20:55:11,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 20:55:11,217 INFO L175 Difference]: Start difference. First operand has 146 places, 130 transitions, 374 flow. Second operand 3 states and 383 transitions. [2022-11-18 20:55:11,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 134 transitions, 421 flow [2022-11-18 20:55:11,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 415 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-18 20:55:11,223 INFO L231 Difference]: Finished difference. Result has 147 places, 129 transitions, 370 flow [2022-11-18 20:55:11,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=147, PETRI_TRANSITIONS=129} [2022-11-18 20:55:11,224 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 15 predicate places. [2022-11-18 20:55:11,225 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 370 flow [2022-11-18 20:55:11,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 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 20:55:11,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:11,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:11,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:55:11,226 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 2 more)] === [2022-11-18 20:55:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:11,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1717548445, now seen corresponding path program 5 times [2022-11-18 20:55:11,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:11,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963338898] [2022-11-18 20:55:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:11,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:11,533 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 20:55:11,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:11,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963338898] [2022-11-18 20:55:11,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963338898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:11,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:11,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:55:11,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498596279] [2022-11-18 20:55:11,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:11,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:55:11,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:11,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:55:11,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:55:11,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-11-18 20:55:11,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 129 transitions, 370 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 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 20:55:11,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:11,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-11-18 20:55:11,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:11,759 INFO L130 PetriNetUnfolder]: 284/1390 cut-off events. [2022-11-18 20:55:11,759 INFO L131 PetriNetUnfolder]: For 438/454 co-relation queries the response was YES. [2022-11-18 20:55:11,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2653 conditions, 1390 events. 284/1390 cut-off events. For 438/454 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11118 event pairs, 77 based on Foata normal form. 30/1364 useless extension candidates. Maximal degree in co-relation 2371. Up to 436 conditions per place. [2022-11-18 20:55:11,771 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-11-18 20:55:11,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 134 transitions, 425 flow [2022-11-18 20:55:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:55:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:55:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-11-18 20:55:11,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-11-18 20:55:11,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-11-18 20:55:11,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-11-18 20:55:11,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:11,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-11-18 20:55:11,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 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 20:55:11,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 20:55:11,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 20:55:11,777 INFO L175 Difference]: Start difference. First operand has 147 places, 129 transitions, 370 flow. Second operand 3 states and 383 transitions. [2022-11-18 20:55:11,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 134 transitions, 425 flow [2022-11-18 20:55:11,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 134 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:55:11,783 INFO L231 Difference]: Finished difference. Result has 148 places, 129 transitions, 374 flow [2022-11-18 20:55:11,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=148, PETRI_TRANSITIONS=129} [2022-11-18 20:55:11,784 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 16 predicate places. [2022-11-18 20:55:11,785 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 129 transitions, 374 flow [2022-11-18 20:55:11,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 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 20:55:11,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:11,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:11,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:55:11,786 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 2 more)] === [2022-11-18 20:55:11,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:11,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1072840797, now seen corresponding path program 6 times [2022-11-18 20:55:11,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:11,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343851889] [2022-11-18 20:55:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:11,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:14,728 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 20:55:14,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:14,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343851889] [2022-11-18 20:55:14,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343851889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:14,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:14,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 20:55:14,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718968533] [2022-11-18 20:55:14,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:14,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:55:14,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:14,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:55:14,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:55:14,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-18 20:55:14,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 129 transitions, 374 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 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 20:55:14,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:14,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-18 20:55:14,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:20,064 INFO L130 PetriNetUnfolder]: 7626/17037 cut-off events. [2022-11-18 20:55:20,064 INFO L131 PetriNetUnfolder]: For 13369/13369 co-relation queries the response was YES. [2022-11-18 20:55:20,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42248 conditions, 17037 events. 7626/17037 cut-off events. For 13369/13369 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 166235 event pairs, 1951 based on Foata normal form. 1/16937 useless extension candidates. Maximal degree in co-relation 34021. Up to 3725 conditions per place. [2022-11-18 20:55:20,246 INFO L137 encePairwiseOnDemand]: 121/138 looper letters, 208 selfloop transitions, 25 changer transitions 13/315 dead transitions. [2022-11-18 20:55:20,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 315 transitions, 1612 flow [2022-11-18 20:55:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:55:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:55:20,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1565 transitions. [2022-11-18 20:55:20,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.708786231884058 [2022-11-18 20:55:20,253 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1565 transitions. [2022-11-18 20:55:20,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1565 transitions. [2022-11-18 20:55:20,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:20,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1565 transitions. [2022-11-18 20:55:20,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.8125) internal successors, (1565), 16 states have internal predecessors, (1565), 0 states have call successors, (0), 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 20:55:20,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 20:55:20,398 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 20:55:20,398 INFO L175 Difference]: Start difference. First operand has 148 places, 129 transitions, 374 flow. Second operand 16 states and 1565 transitions. [2022-11-18 20:55:20,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 315 transitions, 1612 flow [2022-11-18 20:55:20,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 315 transitions, 1608 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:55:20,601 INFO L231 Difference]: Finished difference. Result has 175 places, 149 transitions, 616 flow [2022-11-18 20:55:20,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=616, PETRI_PLACES=175, PETRI_TRANSITIONS=149} [2022-11-18 20:55:20,603 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 43 predicate places. [2022-11-18 20:55:20,603 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 149 transitions, 616 flow [2022-11-18 20:55:20,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 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 20:55:20,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:20,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:20,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:55:20,604 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 2 more)] === [2022-11-18 20:55:20,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:20,605 INFO L85 PathProgramCache]: Analyzing trace with hash -908988307, now seen corresponding path program 7 times [2022-11-18 20:55:20,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:20,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433006700] [2022-11-18 20:55:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:20,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:23,176 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 20:55:23,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:23,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433006700] [2022-11-18 20:55:23,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433006700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:23,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:23,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 20:55:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106825790] [2022-11-18 20:55:23,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:23,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:55:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:23,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:55:23,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:55:23,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-18 20:55:23,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 149 transitions, 616 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 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 20:55:23,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:23,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-18 20:55:23,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:31,456 INFO L130 PetriNetUnfolder]: 11727/29550 cut-off events. [2022-11-18 20:55:31,456 INFO L131 PetriNetUnfolder]: For 54806/54822 co-relation queries the response was YES. [2022-11-18 20:55:31,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83877 conditions, 29550 events. 11727/29550 cut-off events. For 54806/54822 co-relation queries the response was YES. Maximal size of possible extension queue 1806. Compared 344188 event pairs, 3646 based on Foata normal form. 5/29350 useless extension candidates. Maximal degree in co-relation 83301. Up to 5875 conditions per place. [2022-11-18 20:55:31,863 INFO L137 encePairwiseOnDemand]: 120/138 looper letters, 276 selfloop transitions, 40 changer transitions 9/394 dead transitions. [2022-11-18 20:55:31,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 394 transitions, 2604 flow [2022-11-18 20:55:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:55:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:55:31,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1598 transitions. [2022-11-18 20:55:31,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7237318840579711 [2022-11-18 20:55:31,870 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1598 transitions. [2022-11-18 20:55:31,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1598 transitions. [2022-11-18 20:55:31,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:31,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1598 transitions. [2022-11-18 20:55:31,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.875) internal successors, (1598), 16 states have internal predecessors, (1598), 0 states have call successors, (0), 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 20:55:31,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 20:55:31,884 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 20:55:31,884 INFO L175 Difference]: Start difference. First operand has 175 places, 149 transitions, 616 flow. Second operand 16 states and 1598 transitions. [2022-11-18 20:55:31,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 394 transitions, 2604 flow [2022-11-18 20:55:32,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 394 transitions, 2481 flow, removed 54 selfloop flow, removed 5 redundant places. [2022-11-18 20:55:32,674 INFO L231 Difference]: Finished difference. Result has 195 places, 177 transitions, 1031 flow [2022-11-18 20:55:32,674 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1031, PETRI_PLACES=195, PETRI_TRANSITIONS=177} [2022-11-18 20:55:32,675 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 63 predicate places. [2022-11-18 20:55:32,675 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 177 transitions, 1031 flow [2022-11-18 20:55:32,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 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 20:55:32,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:32,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:32,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:55:32,676 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 2 more)] === [2022-11-18 20:55:32,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:32,677 INFO L85 PathProgramCache]: Analyzing trace with hash 519100189, now seen corresponding path program 8 times [2022-11-18 20:55:32,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:32,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453272770] [2022-11-18 20:55:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:32,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:34,841 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 20:55:34,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:34,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453272770] [2022-11-18 20:55:34,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453272770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:34,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:34,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 20:55:34,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695615022] [2022-11-18 20:55:34,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:34,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:55:34,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:34,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:55:34,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:55:34,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-18 20:55:34,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 177 transitions, 1031 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 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 20:55:34,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:34,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-18 20:55:34,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:44,779 INFO L130 PetriNetUnfolder]: 15225/41403 cut-off events. [2022-11-18 20:55:44,779 INFO L131 PetriNetUnfolder]: For 138066/138066 co-relation queries the response was YES. [2022-11-18 20:55:45,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132761 conditions, 41403 events. 15225/41403 cut-off events. For 138066/138066 co-relation queries the response was YES. Maximal size of possible extension queue 2728. Compared 532965 event pairs, 5897 based on Foata normal form. 1/40919 useless extension candidates. Maximal degree in co-relation 131620. Up to 7977 conditions per place. [2022-11-18 20:55:45,628 INFO L137 encePairwiseOnDemand]: 121/138 looper letters, 300 selfloop transitions, 50 changer transitions 9/428 dead transitions. [2022-11-18 20:55:45,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 428 transitions, 3471 flow [2022-11-18 20:55:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:55:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:55:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1597 transitions. [2022-11-18 20:55:45,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7232789855072463 [2022-11-18 20:55:45,638 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1597 transitions. [2022-11-18 20:55:45,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1597 transitions. [2022-11-18 20:55:45,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:45,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1597 transitions. [2022-11-18 20:55:45,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.8125) internal successors, (1597), 16 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:45,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 20:55:45,663 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 20:55:45,663 INFO L175 Difference]: Start difference. First operand has 195 places, 177 transitions, 1031 flow. Second operand 16 states and 1597 transitions. [2022-11-18 20:55:45,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 428 transitions, 3471 flow [2022-11-18 20:55:48,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 428 transitions, 3346 flow, removed 57 selfloop flow, removed 5 redundant places. [2022-11-18 20:55:48,073 INFO L231 Difference]: Finished difference. Result has 216 places, 211 transitions, 1611 flow [2022-11-18 20:55:48,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1611, PETRI_PLACES=216, PETRI_TRANSITIONS=211} [2022-11-18 20:55:48,074 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 84 predicate places. [2022-11-18 20:55:48,074 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 211 transitions, 1611 flow [2022-11-18 20:55:48,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 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 20:55:48,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:48,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:48,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:55:48,076 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 2 more)] === [2022-11-18 20:55:48,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:48,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1973557691, now seen corresponding path program 9 times [2022-11-18 20:55:48,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:48,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25608533] [2022-11-18 20:55:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:48,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:50,195 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 20:55:50,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:50,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25608533] [2022-11-18 20:55:50,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25608533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:50,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:50,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 20:55:50,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019905122] [2022-11-18 20:55:50,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:50,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:55:50,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:50,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:55:50,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:55:50,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-18 20:55:50,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 211 transitions, 1611 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 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 20:55:50,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:50,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-18 20:55:50,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:04,022 INFO L130 PetriNetUnfolder]: 22361/63307 cut-off events. [2022-11-18 20:56:04,023 INFO L131 PetriNetUnfolder]: For 326832/326867 co-relation queries the response was YES. [2022-11-18 20:56:04,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222716 conditions, 63307 events. 22361/63307 cut-off events. For 326832/326867 co-relation queries the response was YES. Maximal size of possible extension queue 4263. Compared 887447 event pairs, 7500 based on Foata normal form. 7/62253 useless extension candidates. Maximal degree in co-relation 220925. Up to 13023 conditions per place. [2022-11-18 20:56:04,707 INFO L137 encePairwiseOnDemand]: 121/138 looper letters, 336 selfloop transitions, 80 changer transitions 8/493 dead transitions. [2022-11-18 20:56:04,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 493 transitions, 4930 flow [2022-11-18 20:56:04,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:56:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:56:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1592 transitions. [2022-11-18 20:56:04,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7210144927536232 [2022-11-18 20:56:04,713 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1592 transitions. [2022-11-18 20:56:04,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1592 transitions. [2022-11-18 20:56:04,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:04,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1592 transitions. [2022-11-18 20:56:04,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.5) internal successors, (1592), 16 states have internal predecessors, (1592), 0 states have call successors, (0), 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 20:56:04,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 20:56:04,724 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 20:56:04,724 INFO L175 Difference]: Start difference. First operand has 216 places, 211 transitions, 1611 flow. Second operand 16 states and 1592 transitions. [2022-11-18 20:56:04,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 493 transitions, 4930 flow [2022-11-18 20:56:09,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 493 transitions, 4768 flow, removed 71 selfloop flow, removed 5 redundant places. [2022-11-18 20:56:09,591 INFO L231 Difference]: Finished difference. Result has 237 places, 255 transitions, 2530 flow [2022-11-18 20:56:09,591 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2530, PETRI_PLACES=237, PETRI_TRANSITIONS=255} [2022-11-18 20:56:09,592 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 105 predicate places. [2022-11-18 20:56:09,592 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 255 transitions, 2530 flow [2022-11-18 20:56:09,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 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 20:56:09,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:09,593 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:09,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:56:09,593 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 2 more)] === [2022-11-18 20:56:09,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:09,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1037639203, now seen corresponding path program 10 times [2022-11-18 20:56:09,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:09,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946073846] [2022-11-18 20:56:09,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:09,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:12,159 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 20:56:12,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:12,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946073846] [2022-11-18 20:56:12,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946073846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:12,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:12,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 20:56:12,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52206978] [2022-11-18 20:56:12,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:12,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:56:12,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:12,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:56:12,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:56:12,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-18 20:56:12,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 255 transitions, 2530 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 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 20:56:12,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:12,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-18 20:56:12,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand