./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 e04fb08f 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_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 11:27:06,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:27:06,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:27:06,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:27:06,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:27:06,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:27:06,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:27:06,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:27:06,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:27:06,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:27:06,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:27:06,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:27:06,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:27:06,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:27:06,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:27:06,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:27:06,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:27:06,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:27:06,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:27:06,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:27:06,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:27:06,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:27:06,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:27:06,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:27:06,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:27:06,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:27:06,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:27:06,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:27:06,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:27:06,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:27:06,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:27:06,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:27:06,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:27:06,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:27:06,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:27:06,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:27:06,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:27:06,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:27:06,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:27:06,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:27:06,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:27:06,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:27:06,203 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:27:06,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:27:06,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:27:06,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:27:06,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:27:06,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:27:06,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:27:06,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:27:06,206 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:27:06,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:27:06,207 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:27:06,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:27:06,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:27:06,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:27:06,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:27:06,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:27:06,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:27:06,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:27:06,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:27:06,209 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:27:06,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:27:06,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:27:06,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:27:06,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:27:06,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:27:06,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:27:06,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:27:06,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:27:06,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:27:06,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:27:06,211 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:27:06,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:27:06,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:27:06,212 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_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2022-11-16 11:27:06,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:27:06,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:27:06,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:27:06,535 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:27:06,536 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:27:06,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-11-16 11:27:06,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/data/a2dd61416/fb84eb6d5e734453a6fd369d8bd4eca5/FLAG89e4ef3b4 [2022-11-16 11:27:07,167 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:27:07,167 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-11-16 11:27:07,175 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/data/a2dd61416/fb84eb6d5e734453a6fd369d8bd4eca5/FLAG89e4ef3b4 [2022-11-16 11:27:07,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/data/a2dd61416/fb84eb6d5e734453a6fd369d8bd4eca5 [2022-11-16 11:27:07,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:27:07,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:27:07,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:27:07,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:27:07,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:27:07,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:07,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b47464f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07, skipping insertion in model container [2022-11-16 11:27:07,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:07,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:27:07,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:27:07,895 WARN L229 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_a3ae2f08-69d4-4552-8568-4fccc66c09bc/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-11-16 11:27:07,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:27:07,918 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:27:07,963 WARN L229 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_a3ae2f08-69d4-4552-8568-4fccc66c09bc/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-11-16 11:27:07,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:27:07,996 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:27:07,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07 WrapperNode [2022-11-16 11:27:07,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:27:07,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:27:07,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:27:07,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:27:08,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:08,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:08,047 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2022-11-16 11:27:08,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:27:08,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:27:08,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:27:08,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:27:08,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:08,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:08,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:08,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:08,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:08,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:08,078 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:08,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:08,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:27:08,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:27:08,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:27:08,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:27:08,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07" (1/1) ... [2022-11-16 11:27:08,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:27:08,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:08,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:27:08,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ae2f08-69d4-4552-8568-4fccc66c09bc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:27:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:27:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:27:08,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:27:08,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:27:08,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:27:08,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:27:08,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:27:08,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 11:27:08,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 11:27:08,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:27:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:27:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:27:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:27:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:27:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:27:08,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:27:08,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:27:08,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:27:08,182 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:27:08,296 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:27:08,298 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:27:08,626 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:27:08,758 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:27:08,759 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:27:08,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:27:08 BoogieIcfgContainer [2022-11-16 11:27:08,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:27:08,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:27:08,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:27:08,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:27:08,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:27:07" (1/3) ... [2022-11-16 11:27:08,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e97e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:27:08, skipping insertion in model container [2022-11-16 11:27:08,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:07" (2/3) ... [2022-11-16 11:27:08,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e97e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:27:08, skipping insertion in model container [2022-11-16 11:27:08,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:27:08" (3/3) ... [2022-11-16 11:27:08,774 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2022-11-16 11:27:08,785 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:27:08,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:27:08,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:27:08,799 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:27:08,901 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:27:08,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2022-11-16 11:27:09,074 INFO L130 PetriNetUnfolder]: 2/134 cut-off events. [2022-11-16 11:27:09,074 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:27:09,081 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. [2022-11-16 11:27:09,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2022-11-16 11:27:09,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2022-11-16 11:27:09,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:27:09,108 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;@7796dc0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:27:09,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-16 11:27:09,232 INFO L130 PetriNetUnfolder]: 2/120 cut-off events. [2022-11-16 11:27:09,242 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:27:09,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:09,244 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] [2022-11-16 11:27:09,244 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)] === [2022-11-16 11:27:09,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:09,253 INFO L85 PathProgramCache]: Analyzing trace with hash -333621011, now seen corresponding path program 1 times [2022-11-16 11:27:09,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:09,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871659117] [2022-11-16 11:27:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:09,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:10,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:10,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871659117] [2022-11-16 11:27:10,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871659117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:10,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:10,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:10,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88549235] [2022-11-16 11:27:10,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:10,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:27:10,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:10,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:27:10,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:10,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-11-16 11:27:10,561 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) [2022-11-16 11:27:10,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:10,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-11-16 11:27:10,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:10,762 INFO L130 PetriNetUnfolder]: 58/329 cut-off events. [2022-11-16 11:27:10,763 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-16 11:27:10,768 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. [2022-11-16 11:27:10,773 INFO L137 encePairwiseOnDemand]: 133/138 looper letters, 16 selfloop transitions, 2 changer transitions 2/123 dead transitions. [2022-11-16 11:27:10,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 312 flow [2022-11-16 11:27:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:27:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:27:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-11-16 11:27:10,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-11-16 11:27:10,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-11-16 11:27:10,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-11-16 11:27:10,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:10,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-11-16 11:27:10,829 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) [2022-11-16 11:27:10,841 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) [2022-11-16 11:27:10,842 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) [2022-11-16 11:27:10,845 INFO L175 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 384 transitions. [2022-11-16 11:27:10,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 312 flow [2022-11-16 11:27:10,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 292 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 11:27:10,864 INFO L231 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2022-11-16 11:27:10,866 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} [2022-11-16 11:27:10,873 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-11-16 11:27:10,874 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2022-11-16 11:27:10,875 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) [2022-11-16 11:27:10,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:10,876 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] [2022-11-16 11:27:10,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:27:10,877 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)] === [2022-11-16 11:27:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:10,881 INFO L85 PathProgramCache]: Analyzing trace with hash -635254733, now seen corresponding path program 2 times [2022-11-16 11:27:10,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:10,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038570841] [2022-11-16 11:27:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:10,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:15,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:15,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038570841] [2022-11-16 11:27:15,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038570841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:15,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:15,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 11:27:15,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800132141] [2022-11-16 11:27:15,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:15,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:27:15,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:15,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:27:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:27:15,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-16 11:27:15,113 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) [2022-11-16 11:27:15,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:15,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-16 11:27:15,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:21,376 INFO L130 PetriNetUnfolder]: 7174/14147 cut-off events. [2022-11-16 11:27:21,376 INFO L131 PetriNetUnfolder]: For 1060/1060 co-relation queries the response was YES. [2022-11-16 11:27:21,425 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. [2022-11-16 11:27:21,507 INFO L137 encePairwiseOnDemand]: 118/138 looper letters, 200 selfloop transitions, 18 changer transitions 13/300 dead transitions. [2022-11-16 11:27:21,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 300 transitions, 1129 flow [2022-11-16 11:27:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:27:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 11:27:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1592 transitions. [2022-11-16 11:27:21,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7210144927536232 [2022-11-16 11:27:21,514 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1592 transitions. [2022-11-16 11:27:21,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1592 transitions. [2022-11-16 11:27:21,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:21,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1592 transitions. [2022-11-16 11:27:21,520 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) [2022-11-16 11:27:21,527 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) [2022-11-16 11:27:21,529 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) [2022-11-16 11:27:21,529 INFO L175 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 16 states and 1592 transitions. [2022-11-16 11:27:21,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 300 transitions, 1129 flow [2022-11-16 11:27:21,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 300 transitions, 1125 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:27:21,555 INFO L231 Difference]: Finished difference. Result has 152 places, 130 transitions, 377 flow [2022-11-16 11:27:21,556 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} [2022-11-16 11:27:21,557 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 20 predicate places. [2022-11-16 11:27:21,557 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 130 transitions, 377 flow [2022-11-16 11:27:21,558 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) [2022-11-16 11:27:21,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:21,559 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] [2022-11-16 11:27:21,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:27:21,560 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)] === [2022-11-16 11:27:21,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:21,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1721550817, now seen corresponding path program 3 times [2022-11-16 11:27:21,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:21,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63216067] [2022-11-16 11:27:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:21,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:22,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:22,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63216067] [2022-11-16 11:27:22,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63216067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:22,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:22,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374375267] [2022-11-16 11:27:22,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:22,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:27:22,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:22,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:27:22,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:22,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-11-16 11:27:22,040 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) [2022-11-16 11:27:22,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:22,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-11-16 11:27:22,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:22,369 INFO L130 PetriNetUnfolder]: 342/1726 cut-off events. [2022-11-16 11:27:22,369 INFO L131 PetriNetUnfolder]: For 487/500 co-relation queries the response was YES. [2022-11-16 11:27:22,383 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. [2022-11-16 11:27:22,391 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-11-16 11:27:22,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 134 transitions, 425 flow [2022-11-16 11:27:22,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:27:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:27:22,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-11-16 11:27:22,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2022-11-16 11:27:22,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-11-16 11:27:22,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-11-16 11:27:22,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:22,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-11-16 11:27:22,397 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) [2022-11-16 11:27:22,399 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) [2022-11-16 11:27:22,400 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) [2022-11-16 11:27:22,400 INFO L175 Difference]: Start difference. First operand has 152 places, 130 transitions, 377 flow. Second operand 3 states and 382 transitions. [2022-11-16 11:27:22,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 134 transitions, 425 flow [2022-11-16 11:27:22,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 134 transitions, 414 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-16 11:27:22,422 INFO L231 Difference]: Finished difference. Result has 146 places, 130 transitions, 374 flow [2022-11-16 11:27:22,422 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} [2022-11-16 11:27:22,425 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 14 predicate places. [2022-11-16 11:27:22,426 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 130 transitions, 374 flow [2022-11-16 11:27:22,426 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) [2022-11-16 11:27:22,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:22,427 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] [2022-11-16 11:27:22,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:27:22,427 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)] === [2022-11-16 11:27:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash 911707567, now seen corresponding path program 4 times [2022-11-16 11:27:22,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:22,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105669818] [2022-11-16 11:27:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:22,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:22,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:22,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105669818] [2022-11-16 11:27:22,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105669818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:22,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:22,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180713258] [2022-11-16 11:27:22,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:22,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:27:22,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:22,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:27:22,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:22,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-11-16 11:27:22,836 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) [2022-11-16 11:27:22,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:22,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-11-16 11:27:22,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:23,196 INFO L130 PetriNetUnfolder]: 257/1474 cut-off events. [2022-11-16 11:27:23,197 INFO L131 PetriNetUnfolder]: For 378/394 co-relation queries the response was YES. [2022-11-16 11:27:23,204 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. [2022-11-16 11:27:23,210 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-11-16 11:27:23,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 134 transitions, 421 flow [2022-11-16 11:27:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:27:23,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:27:23,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-11-16 11:27:23,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-11-16 11:27:23,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-11-16 11:27:23,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-11-16 11:27:23,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:23,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-11-16 11:27:23,216 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) [2022-11-16 11:27:23,217 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) [2022-11-16 11:27:23,218 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) [2022-11-16 11:27:23,218 INFO L175 Difference]: Start difference. First operand has 146 places, 130 transitions, 374 flow. Second operand 3 states and 383 transitions. [2022-11-16 11:27:23,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 134 transitions, 421 flow [2022-11-16 11:27:23,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 415 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-16 11:27:23,226 INFO L231 Difference]: Finished difference. Result has 147 places, 129 transitions, 370 flow [2022-11-16 11:27:23,227 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} [2022-11-16 11:27:23,227 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 15 predicate places. [2022-11-16 11:27:23,228 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 370 flow [2022-11-16 11:27:23,228 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) [2022-11-16 11:27:23,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:23,229 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] [2022-11-16 11:27:23,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:27:23,230 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)] === [2022-11-16 11:27:23,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:23,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1717548445, now seen corresponding path program 5 times [2022-11-16 11:27:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:23,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501846774] [2022-11-16 11:27:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:23,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:23,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:23,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501846774] [2022-11-16 11:27:23,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501846774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:23,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:23,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:23,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016245328] [2022-11-16 11:27:23,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:23,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:27:23,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:23,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:27:23,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:23,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-11-16 11:27:23,704 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) [2022-11-16 11:27:23,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:23,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-11-16 11:27:23,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:24,036 INFO L130 PetriNetUnfolder]: 284/1390 cut-off events. [2022-11-16 11:27:24,036 INFO L131 PetriNetUnfolder]: For 438/454 co-relation queries the response was YES. [2022-11-16 11:27:24,045 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. [2022-11-16 11:27:24,051 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-11-16 11:27:24,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 134 transitions, 425 flow [2022-11-16 11:27:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:27:24,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:27:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-11-16 11:27:24,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-11-16 11:27:24,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-11-16 11:27:24,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-11-16 11:27:24,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:24,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-11-16 11:27:24,056 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) [2022-11-16 11:27:24,057 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) [2022-11-16 11:27:24,058 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) [2022-11-16 11:27:24,058 INFO L175 Difference]: Start difference. First operand has 147 places, 129 transitions, 370 flow. Second operand 3 states and 383 transitions. [2022-11-16 11:27:24,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 134 transitions, 425 flow [2022-11-16 11:27:24,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 134 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:27:24,066 INFO L231 Difference]: Finished difference. Result has 148 places, 129 transitions, 374 flow [2022-11-16 11:27:24,066 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} [2022-11-16 11:27:24,067 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 16 predicate places. [2022-11-16 11:27:24,067 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 129 transitions, 374 flow [2022-11-16 11:27:24,068 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) [2022-11-16 11:27:24,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:24,068 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] [2022-11-16 11:27:24,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:27:24,069 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)] === [2022-11-16 11:27:24,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:24,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1072840797, now seen corresponding path program 6 times [2022-11-16 11:27:24,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:24,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728076006] [2022-11-16 11:27:24,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:24,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:27,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:27,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728076006] [2022-11-16 11:27:27,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728076006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:27,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:27,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 11:27:27,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515148328] [2022-11-16 11:27:27,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:27,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:27:27,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:27,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:27:27,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:27:27,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-16 11:27:27,350 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) [2022-11-16 11:27:27,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:27,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-16 11:27:27,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:33,427 INFO L130 PetriNetUnfolder]: 7626/17037 cut-off events. [2022-11-16 11:27:33,428 INFO L131 PetriNetUnfolder]: For 13369/13369 co-relation queries the response was YES. [2022-11-16 11:27:33,575 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. [2022-11-16 11:27:33,676 INFO L137 encePairwiseOnDemand]: 121/138 looper letters, 208 selfloop transitions, 25 changer transitions 13/315 dead transitions. [2022-11-16 11:27:33,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 315 transitions, 1612 flow [2022-11-16 11:27:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:27:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 11:27:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1565 transitions. [2022-11-16 11:27:33,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.708786231884058 [2022-11-16 11:27:33,682 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1565 transitions. [2022-11-16 11:27:33,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1565 transitions. [2022-11-16 11:27:33,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:33,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1565 transitions. [2022-11-16 11:27:33,688 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) [2022-11-16 11:27:33,693 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) [2022-11-16 11:27:33,695 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) [2022-11-16 11:27:33,695 INFO L175 Difference]: Start difference. First operand has 148 places, 129 transitions, 374 flow. Second operand 16 states and 1565 transitions. [2022-11-16 11:27:33,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 315 transitions, 1612 flow [2022-11-16 11:27:33,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 315 transitions, 1608 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:27:33,928 INFO L231 Difference]: Finished difference. Result has 175 places, 149 transitions, 616 flow [2022-11-16 11:27:33,929 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} [2022-11-16 11:27:33,932 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 43 predicate places. [2022-11-16 11:27:33,933 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 149 transitions, 616 flow [2022-11-16 11:27:33,933 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) [2022-11-16 11:27:33,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:33,934 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] [2022-11-16 11:27:33,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:27:33,935 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)] === [2022-11-16 11:27:33,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:33,935 INFO L85 PathProgramCache]: Analyzing trace with hash -908988307, now seen corresponding path program 7 times [2022-11-16 11:27:33,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:33,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513880667] [2022-11-16 11:27:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:33,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:36,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:36,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513880667] [2022-11-16 11:27:36,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513880667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:36,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:36,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 11:27:36,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496990270] [2022-11-16 11:27:36,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:36,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:27:36,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:36,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:27:36,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:27:36,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-16 11:27:36,600 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) [2022-11-16 11:27:36,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:36,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-16 11:27:36,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:45,042 INFO L130 PetriNetUnfolder]: 11727/29550 cut-off events. [2022-11-16 11:27:45,042 INFO L131 PetriNetUnfolder]: For 54806/54822 co-relation queries the response was YES. [2022-11-16 11:27:45,260 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. [2022-11-16 11:27:45,409 INFO L137 encePairwiseOnDemand]: 120/138 looper letters, 276 selfloop transitions, 40 changer transitions 9/394 dead transitions. [2022-11-16 11:27:45,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 394 transitions, 2604 flow [2022-11-16 11:27:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:27:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 11:27:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1598 transitions. [2022-11-16 11:27:45,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7237318840579711 [2022-11-16 11:27:45,415 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1598 transitions. [2022-11-16 11:27:45,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1598 transitions. [2022-11-16 11:27:45,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:45,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1598 transitions. [2022-11-16 11:27:45,421 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) [2022-11-16 11:27:45,425 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) [2022-11-16 11:27:45,427 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) [2022-11-16 11:27:45,427 INFO L175 Difference]: Start difference. First operand has 175 places, 149 transitions, 616 flow. Second operand 16 states and 1598 transitions. [2022-11-16 11:27:45,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 394 transitions, 2604 flow [2022-11-16 11:27:46,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 394 transitions, 2481 flow, removed 54 selfloop flow, removed 5 redundant places. [2022-11-16 11:27:46,399 INFO L231 Difference]: Finished difference. Result has 195 places, 177 transitions, 1031 flow [2022-11-16 11:27:46,399 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} [2022-11-16 11:27:46,400 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 63 predicate places. [2022-11-16 11:27:46,401 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 177 transitions, 1031 flow [2022-11-16 11:27:46,402 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) [2022-11-16 11:27:46,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:46,402 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] [2022-11-16 11:27:46,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:27:46,403 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)] === [2022-11-16 11:27:46,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:46,404 INFO L85 PathProgramCache]: Analyzing trace with hash 519100189, now seen corresponding path program 8 times [2022-11-16 11:27:46,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:46,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371529734] [2022-11-16 11:27:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:46,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:48,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:48,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371529734] [2022-11-16 11:27:48,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371529734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:48,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:48,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 11:27:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196467538] [2022-11-16 11:27:48,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:48,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:27:48,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:27:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:27:48,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-16 11:27:48,787 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) [2022-11-16 11:27:48,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:48,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-16 11:27:48,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:59,574 INFO L130 PetriNetUnfolder]: 15225/41403 cut-off events. [2022-11-16 11:27:59,575 INFO L131 PetriNetUnfolder]: For 138066/138066 co-relation queries the response was YES. [2022-11-16 11:27:59,880 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. [2022-11-16 11:28:00,054 INFO L137 encePairwiseOnDemand]: 121/138 looper letters, 300 selfloop transitions, 50 changer transitions 9/428 dead transitions. [2022-11-16 11:28:00,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 428 transitions, 3471 flow [2022-11-16 11:28:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:28:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 11:28:00,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1597 transitions. [2022-11-16 11:28:00,059 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7232789855072463 [2022-11-16 11:28:00,059 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1597 transitions. [2022-11-16 11:28:00,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1597 transitions. [2022-11-16 11:28:00,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:00,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1597 transitions. [2022-11-16 11:28:00,065 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) [2022-11-16 11:28:00,069 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) [2022-11-16 11:28:00,071 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) [2022-11-16 11:28:00,071 INFO L175 Difference]: Start difference. First operand has 195 places, 177 transitions, 1031 flow. Second operand 16 states and 1597 transitions. [2022-11-16 11:28:00,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 428 transitions, 3471 flow [2022-11-16 11:28:02,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 428 transitions, 3346 flow, removed 57 selfloop flow, removed 5 redundant places. [2022-11-16 11:28:02,447 INFO L231 Difference]: Finished difference. Result has 216 places, 211 transitions, 1611 flow [2022-11-16 11:28:02,447 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} [2022-11-16 11:28:02,448 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 84 predicate places. [2022-11-16 11:28:02,448 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 211 transitions, 1611 flow [2022-11-16 11:28:02,449 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) [2022-11-16 11:28:02,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:02,450 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] [2022-11-16 11:28:02,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:28:02,450 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)] === [2022-11-16 11:28:02,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:02,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1973557691, now seen corresponding path program 9 times [2022-11-16 11:28:02,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:02,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047550800] [2022-11-16 11:28:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:02,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:05,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047550800] [2022-11-16 11:28:05,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047550800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:05,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:05,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 11:28:05,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307261677] [2022-11-16 11:28:05,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:05,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:28:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:05,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:28:05,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:28:05,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-16 11:28:05,074 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) [2022-11-16 11:28:05,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:05,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-16 11:28:05,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:20,482 INFO L130 PetriNetUnfolder]: 22361/63307 cut-off events. [2022-11-16 11:28:20,483 INFO L131 PetriNetUnfolder]: For 326832/326867 co-relation queries the response was YES. [2022-11-16 11:28:21,051 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. [2022-11-16 11:28:21,547 INFO L137 encePairwiseOnDemand]: 121/138 looper letters, 336 selfloop transitions, 80 changer transitions 8/493 dead transitions. [2022-11-16 11:28:21,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 493 transitions, 4930 flow [2022-11-16 11:28:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:28:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 11:28:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1592 transitions. [2022-11-16 11:28:21,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7210144927536232 [2022-11-16 11:28:21,557 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1592 transitions. [2022-11-16 11:28:21,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1592 transitions. [2022-11-16 11:28:21,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:21,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1592 transitions. [2022-11-16 11:28:21,565 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) [2022-11-16 11:28:21,570 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) [2022-11-16 11:28:21,572 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) [2022-11-16 11:28:21,572 INFO L175 Difference]: Start difference. First operand has 216 places, 211 transitions, 1611 flow. Second operand 16 states and 1592 transitions. [2022-11-16 11:28:21,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 493 transitions, 4930 flow [2022-11-16 11:28:29,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 493 transitions, 4768 flow, removed 71 selfloop flow, removed 5 redundant places. [2022-11-16 11:28:29,209 INFO L231 Difference]: Finished difference. Result has 237 places, 255 transitions, 2530 flow [2022-11-16 11:28:29,210 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} [2022-11-16 11:28:29,211 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 105 predicate places. [2022-11-16 11:28:29,211 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 255 transitions, 2530 flow [2022-11-16 11:28:29,212 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) [2022-11-16 11:28:29,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:29,212 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] [2022-11-16 11:28:29,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:28:29,213 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)] === [2022-11-16 11:28:29,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:29,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1037639203, now seen corresponding path program 10 times [2022-11-16 11:28:29,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:29,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158824016] [2022-11-16 11:28:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:29,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:31,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:31,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158824016] [2022-11-16 11:28:31,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158824016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:31,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:31,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 11:28:31,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521301072] [2022-11-16 11:28:31,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:31,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:28:31,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:28:31,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:28:31,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-16 11:28:31,727 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) [2022-11-16 11:28:31,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:31,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-16 11:28:31,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand