./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ --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-dbf71c6-m [2022-10-17 10:49:01,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:49:01,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:49:02,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:49:02,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:49:02,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:49:02,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:49:02,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:49:02,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:49:02,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:49:02,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:49:02,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:49:02,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:49:02,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:49:02,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:49:02,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:49:02,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:49:02,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:49:02,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:49:02,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:49:02,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:49:02,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:49:02,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:49:02,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:49:02,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:49:02,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:49:02,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:49:02,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:49:02,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:49:02,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:49:02,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:49:02,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:49:02,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:49:02,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:49:02,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:49:02,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:49:02,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:49:02,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:49:02,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:49:02,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:49:02,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:49:02,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:49:02,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:49:02,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:49:02,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:49:02,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:49:02,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:49:02,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:49:02,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:49:02,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:49:02,126 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:49:02,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:49:02,128 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:49:02,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:49:02,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:49:02,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:49:02,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:49:02,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:49:02,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:49:02,129 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:49:02,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:49:02,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:49:02,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:49:02,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:49:02,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:49:02,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:49:02,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:49:02,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:49:02,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:49:02,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:49:02,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:49:02,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:49:02,132 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:49:02,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:49:02,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:49:02,133 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_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2022-10-17 10:49:02,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:49:02,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:49:02,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:49:02,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:49:02,416 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:49:02,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-10-17 10:49:02,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/data/d96cca96c/47f2bd7bab4c40918fc33f2457359c85/FLAGf9ee2b66e [2022-10-17 10:49:02,947 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:49:02,947 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-10-17 10:49:02,962 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/data/d96cca96c/47f2bd7bab4c40918fc33f2457359c85/FLAGf9ee2b66e [2022-10-17 10:49:03,301 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/data/d96cca96c/47f2bd7bab4c40918fc33f2457359c85 [2022-10-17 10:49:03,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:49:03,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:49:03,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:49:03,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:49:03,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:49:03,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2982543e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03, skipping insertion in model container [2022-10-17 10:49:03,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:49:03,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:49:03,656 WARN L230 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_79e5fc1f-e57a-4ccc-a545-936e5e059192/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-10-17 10:49:03,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:49:03,687 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:49:03,733 WARN L230 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_79e5fc1f-e57a-4ccc-a545-936e5e059192/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-10-17 10:49:03,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:49:03,761 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:49:03,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03 WrapperNode [2022-10-17 10:49:03,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:49:03,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:49:03,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:49:03,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:49:03,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,833 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2022-10-17 10:49:03,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:49:03,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:49:03,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:49:03,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:49:03,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,881 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:49:03,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:49:03,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:49:03,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:49:03,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:49:03,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:49:03,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:49:03,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e5fc1f-e57a-4ccc-a545-936e5e059192/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:49:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:49:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:49:03,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:49:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:49:03,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:49:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:49:03,981 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:49:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-10-17 10:49:03,981 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-10-17 10:49:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:49:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:49:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:49:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:49:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:49:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:49:03,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:49:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:49:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:49:03,985 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:49:04,084 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:49:04,087 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:49:04,412 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:49:04,561 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:49:04,566 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:49:04,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:49:04 BoogieIcfgContainer [2022-10-17 10:49:04,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:49:04,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:49:04,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:49:04,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:49:04,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:49:03" (1/3) ... [2022-10-17 10:49:04,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38983a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:49:04, skipping insertion in model container [2022-10-17 10:49:04,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03" (2/3) ... [2022-10-17 10:49:04,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38983a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:49:04, skipping insertion in model container [2022-10-17 10:49:04,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:49:04" (3/3) ... [2022-10-17 10:49:04,590 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2022-10-17 10:49:04,601 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:49:04,612 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:49:04,612 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:49:04,612 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:49:04,727 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-17 10:49:04,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2022-10-17 10:49:04,865 INFO L130 PetriNetUnfolder]: 2/134 cut-off events. [2022-10-17 10:49:04,865 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:49:04,868 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. [2022-10-17 10:49:04,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2022-10-17 10:49:04,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2022-10-17 10:49:04,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:49:04,931 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;@3e3bcd49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:49:04,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 10:49:04,997 INFO L130 PetriNetUnfolder]: 2/120 cut-off events. [2022-10-17 10:49:04,998 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:49:04,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:04,999 INFO L208 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] [2022-10-17 10:49:04,999 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)] === [2022-10-17 10:49:05,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:05,005 INFO L85 PathProgramCache]: Analyzing trace with hash 139718033, now seen corresponding path program 1 times [2022-10-17 10:49:05,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:05,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057274775] [2022-10-17 10:49:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:06,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:06,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:06,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057274775] [2022-10-17 10:49:06,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057274775] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:06,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:06,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:49:06,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567150350] [2022-10-17 10:49:06,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:06,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:49:06,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:06,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:49:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:49:06,363 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-10-17 10:49:06,371 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) [2022-10-17 10:49:06,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:06,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-10-17 10:49:06,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:06,580 INFO L130 PetriNetUnfolder]: 58/321 cut-off events. [2022-10-17 10:49:06,580 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-10-17 10:49:06,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 321 events. 58/321 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1162 event pairs, 13 based on Foata normal form. 10/326 useless extension candidates. Maximal degree in co-relation 368. Up to 100 conditions per place. [2022-10-17 10:49:06,591 INFO L137 encePairwiseOnDemand]: 133/138 looper letters, 16 selfloop transitions, 2 changer transitions 2/123 dead transitions. [2022-10-17 10:49:06,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 312 flow [2022-10-17 10:49:06,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:49:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:49:06,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-10-17 10:49:06,615 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-10-17 10:49:06,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-10-17 10:49:06,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-10-17 10:49:06,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:06,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-10-17 10:49:06,631 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) [2022-10-17 10:49:06,644 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) [2022-10-17 10:49:06,644 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) [2022-10-17 10:49:06,647 INFO L175 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 384 transitions. [2022-10-17 10:49:06,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 312 flow [2022-10-17 10:49:06,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 292 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-10-17 10:49:06,661 INFO L231 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2022-10-17 10:49:06,663 INFO L270 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} [2022-10-17 10:49:06,669 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-10-17 10:49:06,669 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2022-10-17 10:49:06,670 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) [2022-10-17 10:49:06,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:06,671 INFO L208 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] [2022-10-17 10:49:06,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:49:06,672 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)] === [2022-10-17 10:49:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:06,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2135919187, now seen corresponding path program 2 times [2022-10-17 10:49:06,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:06,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779866506] [2022-10-17 10:49:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:06,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:10,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:10,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779866506] [2022-10-17 10:49:10,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779866506] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:10,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:10,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-10-17 10:49:10,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452165358] [2022-10-17 10:49:10,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:10,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:49:10,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:10,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:49:10,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:49:10,960 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-10-17 10:49:10,963 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) [2022-10-17 10:49:10,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:10,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-10-17 10:49:10,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:16,134 INFO L130 PetriNetUnfolder]: 7066/13731 cut-off events. [2022-10-17 10:49:16,134 INFO L131 PetriNetUnfolder]: For 1094/1094 co-relation queries the response was YES. [2022-10-17 10:49:16,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25105 conditions, 13731 events. 7066/13731 cut-off events. For 1094/1094 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 118662 event pairs, 1195 based on Foata normal form. 1/13675 useless extension candidates. Maximal degree in co-relation 17380. Up to 2740 conditions per place. [2022-10-17 10:49:16,318 INFO L137 encePairwiseOnDemand]: 120/138 looper letters, 193 selfloop transitions, 17 changer transitions 13/292 dead transitions. [2022-10-17 10:49:16,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 292 transitions, 1093 flow [2022-10-17 10:49:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:49:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:49:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1584 transitions. [2022-10-17 10:49:16,324 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2022-10-17 10:49:16,324 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1584 transitions. [2022-10-17 10:49:16,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1584 transitions. [2022-10-17 10:49:16,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:16,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1584 transitions. [2022-10-17 10:49:16,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:16,337 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) [2022-10-17 10:49:16,338 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) [2022-10-17 10:49:16,339 INFO L175 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 16 states and 1584 transitions. [2022-10-17 10:49:16,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 292 transitions, 1093 flow [2022-10-17 10:49:16,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 292 transitions, 1089 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:49:16,351 INFO L231 Difference]: Finished difference. Result has 153 places, 131 transitions, 380 flow [2022-10-17 10:49:16,352 INFO L270 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=380, PETRI_PLACES=153, PETRI_TRANSITIONS=131} [2022-10-17 10:49:16,353 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 21 predicate places. [2022-10-17 10:49:16,353 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 131 transitions, 380 flow [2022-10-17 10:49:16,354 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) [2022-10-17 10:49:16,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:16,355 INFO L208 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] [2022-10-17 10:49:16,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:49:16,355 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)] === [2022-10-17 10:49:16,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:16,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1665978389, now seen corresponding path program 3 times [2022-10-17 10:49:16,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:16,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003968192] [2022-10-17 10:49:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:16,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:16,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:16,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003968192] [2022-10-17 10:49:16,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003968192] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:16,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:16,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:49:16,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074801743] [2022-10-17 10:49:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:16,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:49:16,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:49:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:49:16,668 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-10-17 10:49:16,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 131 transitions, 380 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) [2022-10-17 10:49:16,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:16,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-10-17 10:49:16,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:16,927 INFO L130 PetriNetUnfolder]: 270/1315 cut-off events. [2022-10-17 10:49:16,928 INFO L131 PetriNetUnfolder]: For 364/386 co-relation queries the response was YES. [2022-10-17 10:49:16,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 1315 events. 270/1315 cut-off events. For 364/386 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10219 event pairs, 86 based on Foata normal form. 31/1283 useless extension candidates. Maximal degree in co-relation 2405. Up to 370 conditions per place. [2022-10-17 10:49:16,942 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2022-10-17 10:49:16,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 135 transitions, 428 flow [2022-10-17 10:49:16,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:49:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:49:16,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-10-17 10:49:16,946 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2022-10-17 10:49:16,947 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-10-17 10:49:16,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-10-17 10:49:16,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:16,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-10-17 10:49:16,949 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) [2022-10-17 10:49:16,951 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) [2022-10-17 10:49:16,952 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) [2022-10-17 10:49:16,952 INFO L175 Difference]: Start difference. First operand has 153 places, 131 transitions, 380 flow. Second operand 3 states and 382 transitions. [2022-10-17 10:49:16,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 135 transitions, 428 flow [2022-10-17 10:49:16,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 135 transitions, 420 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-10-17 10:49:16,969 INFO L231 Difference]: Finished difference. Result has 148 places, 131 transitions, 380 flow [2022-10-17 10:49:16,969 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=148, PETRI_TRANSITIONS=131} [2022-10-17 10:49:16,972 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 16 predicate places. [2022-10-17 10:49:16,972 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 131 transitions, 380 flow [2022-10-17 10:49:16,973 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) [2022-10-17 10:49:16,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:16,973 INFO L208 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] [2022-10-17 10:49:16,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:49:16,974 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)] === [2022-10-17 10:49:16,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:16,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1533519287, now seen corresponding path program 4 times [2022-10-17 10:49:16,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:16,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783694889] [2022-10-17 10:49:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:16,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:17,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:17,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783694889] [2022-10-17 10:49:17,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783694889] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:17,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:17,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:49:17,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137447691] [2022-10-17 10:49:17,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:17,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:49:17,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:17,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:49:17,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:49:17,406 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-10-17 10:49:17,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 131 transitions, 380 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) [2022-10-17 10:49:17,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:17,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-10-17 10:49:17,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:17,693 INFO L130 PetriNetUnfolder]: 245/1359 cut-off events. [2022-10-17 10:49:17,694 INFO L131 PetriNetUnfolder]: For 399/413 co-relation queries the response was YES. [2022-10-17 10:49:17,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 1359 events. 245/1359 cut-off events. For 399/413 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 10762 event pairs, 194 based on Foata normal form. 19/1290 useless extension candidates. Maximal degree in co-relation 2096. Up to 398 conditions per place. [2022-10-17 10:49:17,708 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-10-17 10:49:17,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 134 transitions, 423 flow [2022-10-17 10:49:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:49:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:49:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-10-17 10:49:17,712 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-10-17 10:49:17,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-10-17 10:49:17,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-10-17 10:49:17,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:17,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-10-17 10:49:17,719 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) [2022-10-17 10:49:17,721 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) [2022-10-17 10:49:17,722 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) [2022-10-17 10:49:17,722 INFO L175 Difference]: Start difference. First operand has 148 places, 131 transitions, 380 flow. Second operand 3 states and 383 transitions. [2022-10-17 10:49:17,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 134 transitions, 423 flow [2022-10-17 10:49:17,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 411 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-10-17 10:49:17,743 INFO L231 Difference]: Finished difference. Result has 147 places, 129 transitions, 366 flow [2022-10-17 10:49:17,743 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=358, 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=366, PETRI_PLACES=147, PETRI_TRANSITIONS=129} [2022-10-17 10:49:17,745 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 15 predicate places. [2022-10-17 10:49:17,745 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 366 flow [2022-10-17 10:49:17,746 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) [2022-10-17 10:49:17,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:17,746 INFO L208 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] [2022-10-17 10:49:17,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:49:17,747 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)] === [2022-10-17 10:49:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1292835621, now seen corresponding path program 5 times [2022-10-17 10:49:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:17,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340792547] [2022-10-17 10:49:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:17,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:18,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:18,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340792547] [2022-10-17 10:49:18,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340792547] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:18,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:18,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:49:18,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051132183] [2022-10-17 10:49:18,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:18,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:49:18,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:18,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:49:18,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:49:18,122 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-10-17 10:49:18,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 129 transitions, 366 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) [2022-10-17 10:49:18,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:18,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-10-17 10:49:18,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:18,358 INFO L130 PetriNetUnfolder]: 276/1223 cut-off events. [2022-10-17 10:49:18,358 INFO L131 PetriNetUnfolder]: For 397/436 co-relation queries the response was YES. [2022-10-17 10:49:18,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 1223 events. 276/1223 cut-off events. For 397/436 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9035 event pairs, 73 based on Foata normal form. 28/1202 useless extension candidates. Maximal degree in co-relation 2089. Up to 384 conditions per place. [2022-10-17 10:49:18,370 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-10-17 10:49:18,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 134 transitions, 421 flow [2022-10-17 10:49:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:49:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:49:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-10-17 10:49:18,372 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-10-17 10:49:18,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-10-17 10:49:18,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-10-17 10:49:18,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:18,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-10-17 10:49:18,375 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) [2022-10-17 10:49:18,376 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) [2022-10-17 10:49:18,377 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) [2022-10-17 10:49:18,377 INFO L175 Difference]: Start difference. First operand has 147 places, 129 transitions, 366 flow. Second operand 3 states and 383 transitions. [2022-10-17 10:49:18,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 134 transitions, 421 flow [2022-10-17 10:49:18,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 134 transitions, 417 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:49:18,384 INFO L231 Difference]: Finished difference. Result has 148 places, 129 transitions, 370 flow [2022-10-17 10:49:18,385 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=362, 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=370, PETRI_PLACES=148, PETRI_TRANSITIONS=129} [2022-10-17 10:49:18,385 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 16 predicate places. [2022-10-17 10:49:18,386 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 129 transitions, 370 flow [2022-10-17 10:49:18,386 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) [2022-10-17 10:49:18,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:18,387 INFO L208 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] [2022-10-17 10:49:18,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:49:18,387 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)] === [2022-10-17 10:49:18,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:18,388 INFO L85 PathProgramCache]: Analyzing trace with hash -168586989, now seen corresponding path program 6 times [2022-10-17 10:49:18,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:18,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093227118] [2022-10-17 10:49:18,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:18,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:21,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:21,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093227118] [2022-10-17 10:49:21,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093227118] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:21,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:21,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-10-17 10:49:21,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253929756] [2022-10-17 10:49:21,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:21,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:49:21,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:49:21,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:49:21,386 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-10-17 10:49:21,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 129 transitions, 370 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) [2022-10-17 10:49:21,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:21,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-10-17 10:49:21,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:27,110 INFO L130 PetriNetUnfolder]: 7456/16390 cut-off events. [2022-10-17 10:49:27,111 INFO L131 PetriNetUnfolder]: For 12321/12329 co-relation queries the response was YES. [2022-10-17 10:49:27,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40945 conditions, 16390 events. 7456/16390 cut-off events. For 12321/12329 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 157314 event pairs, 2781 based on Foata normal form. 3/16268 useless extension candidates. Maximal degree in co-relation 32505. Up to 4665 conditions per place. [2022-10-17 10:49:27,298 INFO L137 encePairwiseOnDemand]: 121/138 looper letters, 208 selfloop transitions, 26 changer transitions 13/316 dead transitions. [2022-10-17 10:49:27,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 316 transitions, 1607 flow [2022-10-17 10:49:27,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:49:27,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:49:27,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1569 transitions. [2022-10-17 10:49:27,306 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7105978260869565 [2022-10-17 10:49:27,306 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1569 transitions. [2022-10-17 10:49:27,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1569 transitions. [2022-10-17 10:49:27,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:27,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1569 transitions. [2022-10-17 10:49:27,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.0625) internal successors, (1569), 16 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:27,320 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) [2022-10-17 10:49:27,321 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) [2022-10-17 10:49:27,321 INFO L175 Difference]: Start difference. First operand has 148 places, 129 transitions, 370 flow. Second operand 16 states and 1569 transitions. [2022-10-17 10:49:27,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 316 transitions, 1607 flow [2022-10-17 10:49:27,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 316 transitions, 1603 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:49:27,462 INFO L231 Difference]: Finished difference. Result has 175 places, 150 transitions, 628 flow [2022-10-17 10:49:27,463 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=628, PETRI_PLACES=175, PETRI_TRANSITIONS=150} [2022-10-17 10:49:27,465 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 43 predicate places. [2022-10-17 10:49:27,466 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 150 transitions, 628 flow [2022-10-17 10:49:27,466 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) [2022-10-17 10:49:27,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:27,467 INFO L208 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] [2022-10-17 10:49:27,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:49:27,467 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)] === [2022-10-17 10:49:27,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1991064101, now seen corresponding path program 7 times [2022-10-17 10:49:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:27,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766870320] [2022-10-17 10:49:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:27,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat