./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 11:02:21,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:02:21,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:02:21,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:02:21,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:02:21,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:02:21,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:02:21,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:02:21,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:02:21,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:02:21,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:02:21,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:02:21,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:02:21,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:02:21,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:02:21,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:02:21,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:02:21,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:02:21,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:02:21,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:02:21,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:02:21,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:02:21,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:02:21,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:02:21,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:02:21,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:02:21,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:02:21,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:02:21,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:02:21,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:02:21,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:02:21,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:02:21,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:02:21,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:02:21,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:02:21,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:02:21,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:02:21,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:02:21,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:02:21,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:02:21,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:02:21,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:02:21,251 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:02:21,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:02:21,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:02:21,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:02:21,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:02:21,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:02:21,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:02:21,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:02:21,256 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:02:21,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:02:21,257 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:02:21,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:02:21,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:02:21,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:02:21,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:02:21,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:02:21,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:02:21,259 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:02:21,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:02:21,259 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:02:21,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:02:21,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:02:21,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:02:21,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:02:21,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:02:21,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:02:21,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:02:21,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:02:21,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:02:21,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:02:21,262 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:02:21,262 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:02:21,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:02:21,262 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_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2022-10-17 11:02:21,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:02:21,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:02:21,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:02:21,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:02:21,597 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:02:21,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-10-17 11:02:21,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/data/d28735bba/dd9140c01ceb49f6841a0c41b692d007/FLAG30498c02d [2022-10-17 11:02:22,132 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:02:22,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-10-17 11:02:22,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/data/d28735bba/dd9140c01ceb49f6841a0c41b692d007/FLAG30498c02d [2022-10-17 11:02:22,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/data/d28735bba/dd9140c01ceb49f6841a0c41b692d007 [2022-10-17 11:02:22,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:02:22,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:02:22,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:02:22,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:02:22,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:02:22,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@437ccc7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22, skipping insertion in model container [2022-10-17 11:02:22,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:02:22,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:02:22,814 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2022-10-17 11:02:22,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:02:22,830 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:02:22,856 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2022-10-17 11:02:22,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:02:22,877 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:02:22,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22 WrapperNode [2022-10-17 11:02:22,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:02:22,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:02:22,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:02:22,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:02:22,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,929 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-10-17 11:02:22,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:02:22,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:02:22,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:02:22,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:02:22,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,957 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:02:22,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:02:22,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:02:22,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:02:22,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22" (1/1) ... [2022-10-17 11:02:22,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:02:22,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:23,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:23,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3232649e-2569-44ad-b4ba-918c62c80068/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:02:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:02:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 11:02:23,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 11:02:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 11:02:23,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 11:02:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:02:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:02:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:02:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:02:23,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:02:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:02:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:02:23,088 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 11:02:23,289 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:02:23,307 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:02:23,593 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:02:23,605 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:02:23,605 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 11:02:23,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:23 BoogieIcfgContainer [2022-10-17 11:02:23,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:02:23,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:02:23,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:02:23,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:02:23,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:02:22" (1/3) ... [2022-10-17 11:02:23,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a0a435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:02:23, skipping insertion in model container [2022-10-17 11:02:23,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:22" (2/3) ... [2022-10-17 11:02:23,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a0a435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:02:23, skipping insertion in model container [2022-10-17 11:02:23,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:23" (3/3) ... [2022-10-17 11:02:23,634 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2022-10-17 11:02:23,643 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 11:02:23,665 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:02:23,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:02:23,666 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 11:02:23,832 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-17 11:02:23,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 364 flow [2022-10-17 11:02:24,134 INFO L130 PetriNetUnfolder]: 13/172 cut-off events. [2022-10-17 11:02:24,134 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 11:02:24,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 13/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 282 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-10-17 11:02:24,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 364 flow [2022-10-17 11:02:24,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 163 transitions, 338 flow [2022-10-17 11:02:24,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:02:24,195 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;@4adcd91e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:02:24,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-10-17 11:02:24,253 INFO L130 PetriNetUnfolder]: 13/162 cut-off events. [2022-10-17 11:02:24,253 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 11:02:24,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:24,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:24,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:24,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash 972755305, now seen corresponding path program 1 times [2022-10-17 11:02:24,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:24,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604654999] [2022-10-17 11:02:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:24,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:25,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:25,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604654999] [2022-10-17 11:02:25,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604654999] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:25,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:25,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 11:02:25,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209340783] [2022-10-17 11:02:25,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:25,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 11:02:25,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:25,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 11:02:25,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:02:25,488 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2022-10-17 11:02:25,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 163 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:25,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:25,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2022-10-17 11:02:25,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:25,977 INFO L130 PetriNetUnfolder]: 61/487 cut-off events. [2022-10-17 11:02:25,977 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-10-17 11:02:25,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 487 events. 61/487 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2509 event pairs, 15 based on Foata normal form. 25/470 useless extension candidates. Maximal degree in co-relation 446. Up to 45 conditions per place. [2022-10-17 11:02:25,990 INFO L137 encePairwiseOnDemand]: 153/174 looper letters, 48 selfloop transitions, 13 changer transitions 28/216 dead transitions. [2022-10-17 11:02:25,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 216 transitions, 643 flow [2022-10-17 11:02:25,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 11:02:25,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 11:02:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1892 transitions. [2022-10-17 11:02:26,028 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8364279398762158 [2022-10-17 11:02:26,029 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1892 transitions. [2022-10-17 11:02:26,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1892 transitions. [2022-10-17 11:02:26,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:26,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1892 transitions. [2022-10-17 11:02:26,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 145.53846153846155) internal successors, (1892), 13 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:26,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 174.0) internal successors, (2436), 14 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:26,073 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 174.0) internal successors, (2436), 14 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:26,075 INFO L175 Difference]: Start difference. First operand has 157 places, 163 transitions, 338 flow. Second operand 13 states and 1892 transitions. [2022-10-17 11:02:26,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 216 transitions, 643 flow [2022-10-17 11:02:26,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 216 transitions, 621 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 11:02:26,089 INFO L231 Difference]: Finished difference. Result has 171 places, 164 transitions, 395 flow [2022-10-17 11:02:26,092 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=395, PETRI_PLACES=171, PETRI_TRANSITIONS=164} [2022-10-17 11:02:26,097 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 14 predicate places. [2022-10-17 11:02:26,098 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 164 transitions, 395 flow [2022-10-17 11:02:26,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:26,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:26,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:26,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:02:26,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:26,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:26,102 INFO L85 PathProgramCache]: Analyzing trace with hash 52861613, now seen corresponding path program 1 times [2022-10-17 11:02:26,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:26,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313524790] [2022-10-17 11:02:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:26,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:26,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:26,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313524790] [2022-10-17 11:02:26,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313524790] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:26,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:26,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:02:26,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834872292] [2022-10-17 11:02:26,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:26,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:02:26,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:26,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:02:26,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:02:26,518 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-10-17 11:02:26,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 164 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:26,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:26,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-10-17 11:02:26,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:26,782 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([450] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_5~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][91], [171#true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 193#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 195#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 12#L50-18true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), 108#L65-4true]) [2022-10-17 11:02:26,789 INFO L383 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2022-10-17 11:02:26,789 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-10-17 11:02:26,789 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-10-17 11:02:26,789 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-10-17 11:02:26,813 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][118], [171#true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 193#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 12#L50-18true, Black: 195#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), 108#L65-4true]) [2022-10-17 11:02:26,813 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2022-10-17 11:02:26,813 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-10-17 11:02:26,813 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-10-17 11:02:26,813 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-10-17 11:02:26,815 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([450] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_5~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][91], [171#true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 193#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 12#L50-18true, Black: 195#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), 108#L65-4true]) [2022-10-17 11:02:26,816 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2022-10-17 11:02:26,816 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-10-17 11:02:26,816 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-10-17 11:02:26,816 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-10-17 11:02:26,817 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-10-17 11:02:26,846 INFO L130 PetriNetUnfolder]: 107/1019 cut-off events. [2022-10-17 11:02:26,847 INFO L131 PetriNetUnfolder]: For 90/97 co-relation queries the response was YES. [2022-10-17 11:02:26,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 1019 events. 107/1019 cut-off events. For 90/97 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7624 event pairs, 15 based on Foata normal form. 3/925 useless extension candidates. Maximal degree in co-relation 1431. Up to 90 conditions per place. [2022-10-17 11:02:26,856 INFO L137 encePairwiseOnDemand]: 162/174 looper letters, 31 selfloop transitions, 12 changer transitions 1/188 dead transitions. [2022-10-17 11:02:26,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 188 transitions, 537 flow [2022-10-17 11:02:26,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:02:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-10-17 11:02:26,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2022-10-17 11:02:26,859 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9051724137931034 [2022-10-17 11:02:26,859 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2022-10-17 11:02:26,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2022-10-17 11:02:26,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:26,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2022-10-17 11:02:26,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:26,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:26,866 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:26,866 INFO L175 Difference]: Start difference. First operand has 171 places, 164 transitions, 395 flow. Second operand 4 states and 630 transitions. [2022-10-17 11:02:26,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 188 transitions, 537 flow [2022-10-17 11:02:26,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 188 transitions, 531 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-10-17 11:02:26,884 INFO L231 Difference]: Finished difference. Result has 165 places, 174 transitions, 477 flow [2022-10-17 11:02:26,885 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=477, PETRI_PLACES=165, PETRI_TRANSITIONS=174} [2022-10-17 11:02:26,885 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 8 predicate places. [2022-10-17 11:02:26,886 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 174 transitions, 477 flow [2022-10-17 11:02:26,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:26,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:26,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:26,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:02:26,888 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:26,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2140914997, now seen corresponding path program 1 times [2022-10-17 11:02:26,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:26,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193695779] [2022-10-17 11:02:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:26,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:27,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:27,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193695779] [2022-10-17 11:02:27,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193695779] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:27,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:27,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:02:27,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893331030] [2022-10-17 11:02:27,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:27,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:02:27,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:27,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:02:27,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:02:27,102 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-10-17 11:02:27,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 174 transitions, 477 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:27,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:27,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-10-17 11:02:27,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:27,358 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([450] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_5~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][87], [214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, 12#L50-18true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true]) [2022-10-17 11:02:27,358 INFO L383 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2022-10-17 11:02:27,359 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-10-17 11:02:27,359 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-10-17 11:02:27,359 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-10-17 11:02:27,363 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][133], [Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, 12#L50-18true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true]) [2022-10-17 11:02:27,363 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2022-10-17 11:02:27,363 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-10-17 11:02:27,363 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-10-17 11:02:27,363 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-10-17 11:02:27,367 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([450] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_5~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][87], [Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, 12#L50-18true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true]) [2022-10-17 11:02:27,368 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2022-10-17 11:02:27,368 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-10-17 11:02:27,368 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-10-17 11:02:27,368 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-10-17 11:02:27,368 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-10-17 11:02:27,420 INFO L130 PetriNetUnfolder]: 97/1196 cut-off events. [2022-10-17 11:02:27,421 INFO L131 PetriNetUnfolder]: For 147/156 co-relation queries the response was YES. [2022-10-17 11:02:27,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 1196 events. 97/1196 cut-off events. For 147/156 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8898 event pairs, 19 based on Foata normal form. 10/1141 useless extension candidates. Maximal degree in co-relation 1184. Up to 80 conditions per place. [2022-10-17 11:02:27,432 INFO L137 encePairwiseOnDemand]: 164/174 looper letters, 43 selfloop transitions, 11 changer transitions 3/201 dead transitions. [2022-10-17 11:02:27,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 201 transitions, 703 flow [2022-10-17 11:02:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:02:27,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-10-17 11:02:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 626 transitions. [2022-10-17 11:02:27,436 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8994252873563219 [2022-10-17 11:02:27,436 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 626 transitions. [2022-10-17 11:02:27,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 626 transitions. [2022-10-17 11:02:27,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:27,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 626 transitions. [2022-10-17 11:02:27,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:27,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:27,444 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:27,444 INFO L175 Difference]: Start difference. First operand has 165 places, 174 transitions, 477 flow. Second operand 4 states and 626 transitions. [2022-10-17 11:02:27,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 201 transitions, 703 flow [2022-10-17 11:02:27,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 201 transitions, 703 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 11:02:27,454 INFO L231 Difference]: Finished difference. Result has 171 places, 182 transitions, 579 flow [2022-10-17 11:02:27,455 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=579, PETRI_PLACES=171, PETRI_TRANSITIONS=182} [2022-10-17 11:02:27,456 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 14 predicate places. [2022-10-17 11:02:27,457 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 182 transitions, 579 flow [2022-10-17 11:02:27,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:27,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:27,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:27,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:02:27,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:27,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:27,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2029871769, now seen corresponding path program 2 times [2022-10-17 11:02:27,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:27,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265996420] [2022-10-17 11:02:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:27,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:27,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:27,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265996420] [2022-10-17 11:02:27,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265996420] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:27,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:27,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:02:27,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72867499] [2022-10-17 11:02:27,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:27,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:02:27,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:27,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:02:27,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:02:27,565 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-10-17 11:02:27,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 182 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:27,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:27,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-10-17 11:02:27,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:27,881 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][133], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true, Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, 12#L50-18true, Black: 211#true, 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 213#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 222#(= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))]) [2022-10-17 11:02:27,882 INFO L383 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2022-10-17 11:02:27,882 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-10-17 11:02:27,882 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-10-17 11:02:27,882 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-10-17 11:02:27,893 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([450] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_5~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][95], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true, 214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, 12#L50-18true, Black: 211#true, Black: 213#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), 222#(= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))]) [2022-10-17 11:02:27,894 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is not cut-off event [2022-10-17 11:02:27,894 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is not cut-off event [2022-10-17 11:02:27,894 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-10-17 11:02:27,894 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-10-17 11:02:27,971 INFO L130 PetriNetUnfolder]: 87/1345 cut-off events. [2022-10-17 11:02:27,971 INFO L131 PetriNetUnfolder]: For 295/302 co-relation queries the response was YES. [2022-10-17 11:02:27,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2011 conditions, 1345 events. 87/1345 cut-off events. For 295/302 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 10410 event pairs, 16 based on Foata normal form. 14/1302 useless extension candidates. Maximal degree in co-relation 1398. Up to 97 conditions per place. [2022-10-17 11:02:27,984 INFO L137 encePairwiseOnDemand]: 163/174 looper letters, 42 selfloop transitions, 13 changer transitions 3/202 dead transitions. [2022-10-17 11:02:27,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 202 transitions, 795 flow [2022-10-17 11:02:27,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:02:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-10-17 11:02:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-10-17 11:02:27,987 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-10-17 11:02:27,987 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-10-17 11:02:27,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-10-17 11:02:27,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:27,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-10-17 11:02:27,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:27,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:27,993 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:27,994 INFO L175 Difference]: Start difference. First operand has 171 places, 182 transitions, 579 flow. Second operand 4 states and 624 transitions. [2022-10-17 11:02:27,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 202 transitions, 795 flow [2022-10-17 11:02:27,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 202 transitions, 795 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 11:02:28,004 INFO L231 Difference]: Finished difference. Result has 176 places, 188 transitions, 679 flow [2022-10-17 11:02:28,005 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=176, PETRI_TRANSITIONS=188} [2022-10-17 11:02:28,006 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 19 predicate places. [2022-10-17 11:02:28,006 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 188 transitions, 679 flow [2022-10-17 11:02:28,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:28,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:28,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:28,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:02:28,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash 777655661, now seen corresponding path program 2 times [2022-10-17 11:02:28,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:28,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861645929] [2022-10-17 11:02:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:28,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:28,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:28,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861645929] [2022-10-17 11:02:28,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861645929] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:28,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:28,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:02:28,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627555663] [2022-10-17 11:02:28,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:28,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:02:28,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:28,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:02:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:02:28,198 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-10-17 11:02:28,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 188 transitions, 679 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:28,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:28,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-10-17 11:02:28,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:28,458 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][138], [Black: 221#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, 229#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true, Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, 12#L50-18true, Black: 211#true, 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 213#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 222#(= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))]) [2022-10-17 11:02:28,458 INFO L383 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2022-10-17 11:02:28,458 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-10-17 11:02:28,458 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-10-17 11:02:28,459 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-10-17 11:02:28,466 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([450] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_5~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][93], [Black: 221#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, 229#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true, Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, 12#L50-18true, Black: 211#true, Black: 213#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), 222#(= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))]) [2022-10-17 11:02:28,466 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is not cut-off event [2022-10-17 11:02:28,467 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-10-17 11:02:28,467 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-10-17 11:02:28,467 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is not cut-off event [2022-10-17 11:02:28,527 INFO L130 PetriNetUnfolder]: 78/1126 cut-off events. [2022-10-17 11:02:28,528 INFO L131 PetriNetUnfolder]: For 393/400 co-relation queries the response was YES. [2022-10-17 11:02:28,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 1126 events. 78/1126 cut-off events. For 393/400 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8075 event pairs, 18 based on Foata normal form. 8/1084 useless extension candidates. Maximal degree in co-relation 1282. Up to 100 conditions per place. [2022-10-17 11:02:28,537 INFO L137 encePairwiseOnDemand]: 162/174 looper letters, 40 selfloop transitions, 16 changer transitions 5/203 dead transitions. [2022-10-17 11:02:28,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 203 transitions, 873 flow [2022-10-17 11:02:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:02:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-10-17 11:02:28,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-10-17 11:02:28,540 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-10-17 11:02:28,541 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-10-17 11:02:28,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-10-17 11:02:28,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:28,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-10-17 11:02:28,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:28,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:28,546 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:28,546 INFO L175 Difference]: Start difference. First operand has 176 places, 188 transitions, 679 flow. Second operand 4 states and 624 transitions. [2022-10-17 11:02:28,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 203 transitions, 873 flow [2022-10-17 11:02:28,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 203 transitions, 858 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 11:02:28,556 INFO L231 Difference]: Finished difference. Result has 179 places, 189 transitions, 749 flow [2022-10-17 11:02:28,556 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=749, PETRI_PLACES=179, PETRI_TRANSITIONS=189} [2022-10-17 11:02:28,557 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 22 predicate places. [2022-10-17 11:02:28,558 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 189 transitions, 749 flow [2022-10-17 11:02:28,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:28,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:28,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:28,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:02:28,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:28,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:28,560 INFO L85 PathProgramCache]: Analyzing trace with hash -882261451, now seen corresponding path program 3 times [2022-10-17 11:02:28,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:28,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145796773] [2022-10-17 11:02:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:28,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:28,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:28,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145796773] [2022-10-17 11:02:28,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145796773] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:28,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:28,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:02:28,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321867108] [2022-10-17 11:02:28,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:28,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:02:28,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:28,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:02:28,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:02:28,658 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-10-17 11:02:28,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 189 transitions, 749 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:28,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:28,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-10-17 11:02:28,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:29,005 INFO L130 PetriNetUnfolder]: 71/1200 cut-off events. [2022-10-17 11:02:29,005 INFO L131 PetriNetUnfolder]: For 514/518 co-relation queries the response was YES. [2022-10-17 11:02:29,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 1200 events. 71/1200 cut-off events. For 514/518 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8715 event pairs, 16 based on Foata normal form. 5/1163 useless extension candidates. Maximal degree in co-relation 1399. Up to 68 conditions per place. [2022-10-17 11:02:29,016 INFO L137 encePairwiseOnDemand]: 161/174 looper letters, 45 selfloop transitions, 21 changer transitions 3/211 dead transitions. [2022-10-17 11:02:29,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 211 transitions, 986 flow [2022-10-17 11:02:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:02:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 11:02:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2022-10-17 11:02:29,020 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8988505747126436 [2022-10-17 11:02:29,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2022-10-17 11:02:29,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2022-10-17 11:02:29,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:29,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2022-10-17 11:02:29,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:29,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:29,028 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:29,028 INFO L175 Difference]: Start difference. First operand has 179 places, 189 transitions, 749 flow. Second operand 5 states and 782 transitions. [2022-10-17 11:02:29,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 211 transitions, 986 flow [2022-10-17 11:02:29,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 211 transitions, 969 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 11:02:29,040 INFO L231 Difference]: Finished difference. Result has 183 places, 195 transitions, 862 flow [2022-10-17 11:02:29,041 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=862, PETRI_PLACES=183, PETRI_TRANSITIONS=195} [2022-10-17 11:02:29,042 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2022-10-17 11:02:29,042 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 195 transitions, 862 flow [2022-10-17 11:02:29,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:29,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:29,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:29,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:02:29,044 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:29,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:29,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1798058324, now seen corresponding path program 1 times [2022-10-17 11:02:29,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:29,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465167220] [2022-10-17 11:02:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:29,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:29,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:29,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465167220] [2022-10-17 11:02:29,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465167220] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:29,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:29,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:02:29,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577022698] [2022-10-17 11:02:29,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:29,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:02:29,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:29,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:02:29,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:02:29,471 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-10-17 11:02:29,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 195 transitions, 862 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:29,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:29,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-10-17 11:02:29,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:30,433 INFO L130 PetriNetUnfolder]: 366/1808 cut-off events. [2022-10-17 11:02:30,433 INFO L131 PetriNetUnfolder]: For 766/811 co-relation queries the response was YES. [2022-10-17 11:02:30,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 1808 events. 366/1808 cut-off events. For 766/811 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 14150 event pairs, 173 based on Foata normal form. 2/1735 useless extension candidates. Maximal degree in co-relation 2315. Up to 673 conditions per place. [2022-10-17 11:02:30,454 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 6 changer transitions 46/302 dead transitions. [2022-10-17 11:02:30,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 302 transitions, 1466 flow [2022-10-17 11:02:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-17 11:02:30,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-10-17 11:02:30,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3982 transitions. [2022-10-17 11:02:30,472 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7628352490421456 [2022-10-17 11:02:30,473 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3982 transitions. [2022-10-17 11:02:30,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3982 transitions. [2022-10-17 11:02:30,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:30,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3982 transitions. [2022-10-17 11:02:30,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.73333333333332) internal successors, (3982), 30 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:30,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:30,533 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:30,533 INFO L175 Difference]: Start difference. First operand has 183 places, 195 transitions, 862 flow. Second operand 30 states and 3982 transitions. [2022-10-17 11:02:30,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 302 transitions, 1466 flow [2022-10-17 11:02:30,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 302 transitions, 1452 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-10-17 11:02:30,552 INFO L231 Difference]: Finished difference. Result has 239 places, 200 transitions, 974 flow [2022-10-17 11:02:30,553 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=974, PETRI_PLACES=239, PETRI_TRANSITIONS=200} [2022-10-17 11:02:30,554 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 82 predicate places. [2022-10-17 11:02:30,554 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 200 transitions, 974 flow [2022-10-17 11:02:30,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:30,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:30,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:30,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 11:02:30,556 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:30,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:30,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1264232724, now seen corresponding path program 1 times [2022-10-17 11:02:30,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:30,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623188482] [2022-10-17 11:02:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:30,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:30,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:30,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623188482] [2022-10-17 11:02:30,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623188482] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:30,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:30,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:02:30,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667565168] [2022-10-17 11:02:30,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:30,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:02:30,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:30,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:02:30,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:02:30,964 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-10-17 11:02:30,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 200 transitions, 974 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:30,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:30,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-10-17 11:02:30,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:32,117 INFO L130 PetriNetUnfolder]: 382/1949 cut-off events. [2022-10-17 11:02:32,117 INFO L131 PetriNetUnfolder]: For 5904/5972 co-relation queries the response was YES. [2022-10-17 11:02:32,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5919 conditions, 1949 events. 382/1949 cut-off events. For 5904/5972 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 15445 event pairs, 212 based on Foata normal form. 2/1879 useless extension candidates. Maximal degree in co-relation 5662. Up to 731 conditions per place. [2022-10-17 11:02:32,151 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 8 changer transitions 48/314 dead transitions. [2022-10-17 11:02:32,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 314 transitions, 2127 flow [2022-10-17 11:02:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-10-17 11:02:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-10-17 11:02:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4117 transitions. [2022-10-17 11:02:32,226 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7632554690396737 [2022-10-17 11:02:32,226 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4117 transitions. [2022-10-17 11:02:32,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4117 transitions. [2022-10-17 11:02:32,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:32,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4117 transitions. [2022-10-17 11:02:32,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.80645161290323) internal successors, (4117), 31 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:32,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:32,275 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:32,276 INFO L175 Difference]: Start difference. First operand has 239 places, 200 transitions, 974 flow. Second operand 31 states and 4117 transitions. [2022-10-17 11:02:32,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 314 transitions, 2127 flow [2022-10-17 11:02:32,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 314 transitions, 1970 flow, removed 78 selfloop flow, removed 12 redundant places. [2022-10-17 11:02:32,368 INFO L231 Difference]: Finished difference. Result has 263 places, 207 transitions, 1125 flow [2022-10-17 11:02:32,369 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1125, PETRI_PLACES=263, PETRI_TRANSITIONS=207} [2022-10-17 11:02:32,372 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 106 predicate places. [2022-10-17 11:02:32,373 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 207 transitions, 1125 flow [2022-10-17 11:02:32,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:32,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:32,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:32,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 11:02:32,375 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:32,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:32,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1087007612, now seen corresponding path program 2 times [2022-10-17 11:02:32,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:32,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221508948] [2022-10-17 11:02:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:32,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:32,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:32,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221508948] [2022-10-17 11:02:32,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221508948] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:32,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:32,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:02:32,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363016503] [2022-10-17 11:02:32,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:32,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:02:32,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:02:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:02:32,741 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-10-17 11:02:32,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 207 transitions, 1125 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:32,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:32,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-10-17 11:02:32,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:33,899 INFO L130 PetriNetUnfolder]: 447/2072 cut-off events. [2022-10-17 11:02:33,899 INFO L131 PetriNetUnfolder]: For 14875/14940 co-relation queries the response was YES. [2022-10-17 11:02:33,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8185 conditions, 2072 events. 447/2072 cut-off events. For 14875/14940 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16343 event pairs, 271 based on Foata normal form. 24/2007 useless extension candidates. Maximal degree in co-relation 8001. Up to 884 conditions per place. [2022-10-17 11:02:33,942 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 98 selfloop transitions, 15 changer transitions 32/295 dead transitions. [2022-10-17 11:02:33,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 295 transitions, 2304 flow [2022-10-17 11:02:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-17 11:02:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-10-17 11:02:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2926 transitions. [2022-10-17 11:02:33,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-10-17 11:02:33,951 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2926 transitions. [2022-10-17 11:02:33,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2926 transitions. [2022-10-17 11:02:33,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:33,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2926 transitions. [2022-10-17 11:02:33,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:33,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:33,975 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:33,976 INFO L175 Difference]: Start difference. First operand has 263 places, 207 transitions, 1125 flow. Second operand 22 states and 2926 transitions. [2022-10-17 11:02:33,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 295 transitions, 2304 flow [2022-10-17 11:02:34,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 295 transitions, 2013 flow, removed 145 selfloop flow, removed 19 redundant places. [2022-10-17 11:02:34,081 INFO L231 Difference]: Finished difference. Result has 262 places, 221 transitions, 1273 flow [2022-10-17 11:02:34,082 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1273, PETRI_PLACES=262, PETRI_TRANSITIONS=221} [2022-10-17 11:02:34,084 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 105 predicate places. [2022-10-17 11:02:34,084 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 221 transitions, 1273 flow [2022-10-17 11:02:34,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:34,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:34,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:34,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 11:02:34,087 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:34,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:34,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1507504170, now seen corresponding path program 2 times [2022-10-17 11:02:34,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:34,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194708760] [2022-10-17 11:02:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:34,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:34,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:34,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194708760] [2022-10-17 11:02:34,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194708760] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:34,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:34,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:02:34,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405005637] [2022-10-17 11:02:34,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:34,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:02:34,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:34,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:02:34,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:02:34,476 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-10-17 11:02:34,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 221 transitions, 1273 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:34,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:34,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-10-17 11:02:34,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:35,726 INFO L130 PetriNetUnfolder]: 444/2089 cut-off events. [2022-10-17 11:02:35,726 INFO L131 PetriNetUnfolder]: For 12202/12280 co-relation queries the response was YES. [2022-10-17 11:02:35,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8314 conditions, 2089 events. 444/2089 cut-off events. For 12202/12280 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16701 event pairs, 268 based on Foata normal form. 7/2016 useless extension candidates. Maximal degree in co-relation 8038. Up to 917 conditions per place. [2022-10-17 11:02:35,774 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 17 changer transitions 40/307 dead transitions. [2022-10-17 11:02:35,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 307 transitions, 2557 flow [2022-10-17 11:02:35,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-17 11:02:35,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-10-17 11:02:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3708 transitions. [2022-10-17 11:02:35,787 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7610837438423645 [2022-10-17 11:02:35,788 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3708 transitions. [2022-10-17 11:02:35,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3708 transitions. [2022-10-17 11:02:35,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:35,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3708 transitions. [2022-10-17 11:02:35,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.42857142857142) internal successors, (3708), 28 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:35,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:35,822 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:35,822 INFO L175 Difference]: Start difference. First operand has 262 places, 221 transitions, 1273 flow. Second operand 28 states and 3708 transitions. [2022-10-17 11:02:35,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 307 transitions, 2557 flow [2022-10-17 11:02:35,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 307 transitions, 2461 flow, removed 48 selfloop flow, removed 8 redundant places. [2022-10-17 11:02:35,889 INFO L231 Difference]: Finished difference. Result has 285 places, 235 transitions, 1477 flow [2022-10-17 11:02:35,891 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1477, PETRI_PLACES=285, PETRI_TRANSITIONS=235} [2022-10-17 11:02:35,892 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 128 predicate places. [2022-10-17 11:02:35,892 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 235 transitions, 1477 flow [2022-10-17 11:02:35,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:35,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:35,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:35,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 11:02:35,894 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:35,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1546058506, now seen corresponding path program 3 times [2022-10-17 11:02:35,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:35,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140242265] [2022-10-17 11:02:35,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:35,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:36,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:36,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140242265] [2022-10-17 11:02:36,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140242265] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:36,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:36,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:02:36,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889511661] [2022-10-17 11:02:36,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:36,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:02:36,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:36,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:02:36,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:02:36,359 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-10-17 11:02:36,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 235 transitions, 1477 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:36,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:36,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-10-17 11:02:36,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:37,557 INFO L130 PetriNetUnfolder]: 503/2244 cut-off events. [2022-10-17 11:02:37,558 INFO L131 PetriNetUnfolder]: For 20001/20062 co-relation queries the response was YES. [2022-10-17 11:02:37,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9941 conditions, 2244 events. 503/2244 cut-off events. For 20001/20062 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 17932 event pairs, 286 based on Foata normal form. 20/2173 useless extension candidates. Maximal degree in co-relation 9746. Up to 927 conditions per place. [2022-10-17 11:02:37,619 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 121 selfloop transitions, 19 changer transitions 33/324 dead transitions. [2022-10-17 11:02:37,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 324 transitions, 2991 flow [2022-10-17 11:02:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-17 11:02:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-10-17 11:02:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3061 transitions. [2022-10-17 11:02:37,627 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7648675662168916 [2022-10-17 11:02:37,627 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3061 transitions. [2022-10-17 11:02:37,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3061 transitions. [2022-10-17 11:02:37,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:37,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3061 transitions. [2022-10-17 11:02:37,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 133.08695652173913) internal successors, (3061), 23 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:37,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:37,646 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:37,646 INFO L175 Difference]: Start difference. First operand has 285 places, 235 transitions, 1477 flow. Second operand 23 states and 3061 transitions. [2022-10-17 11:02:37,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 324 transitions, 2991 flow [2022-10-17 11:02:37,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 324 transitions, 2727 flow, removed 132 selfloop flow, removed 11 redundant places. [2022-10-17 11:02:37,752 INFO L231 Difference]: Finished difference. Result has 295 places, 251 transitions, 1660 flow [2022-10-17 11:02:37,753 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1660, PETRI_PLACES=295, PETRI_TRANSITIONS=251} [2022-10-17 11:02:37,754 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 138 predicate places. [2022-10-17 11:02:37,754 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 251 transitions, 1660 flow [2022-10-17 11:02:37,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:37,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:37,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:37,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 11:02:37,756 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:37,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:37,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1206343116, now seen corresponding path program 4 times [2022-10-17 11:02:37,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:37,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957594295] [2022-10-17 11:02:37,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:37,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:38,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:38,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:38,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957594295] [2022-10-17 11:02:38,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957594295] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:38,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:38,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:02:38,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674822969] [2022-10-17 11:02:38,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:38,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:02:38,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:38,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:02:38,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:02:38,079 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-10-17 11:02:38,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 251 transitions, 1660 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:38,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:38,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-10-17 11:02:38,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:39,196 INFO L130 PetriNetUnfolder]: 514/2300 cut-off events. [2022-10-17 11:02:39,196 INFO L131 PetriNetUnfolder]: For 22158/22228 co-relation queries the response was YES. [2022-10-17 11:02:39,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10417 conditions, 2300 events. 514/2300 cut-off events. For 22158/22228 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 18522 event pairs, 278 based on Foata normal form. 20/2226 useless extension candidates. Maximal degree in co-relation 10135. Up to 1005 conditions per place. [2022-10-17 11:02:39,254 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 29 changer transitions 25/321 dead transitions. [2022-10-17 11:02:39,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 321 transitions, 2964 flow [2022-10-17 11:02:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-17 11:02:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-10-17 11:02:39,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-10-17 11:02:39,259 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-10-17 11:02:39,260 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-10-17 11:02:39,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-10-17 11:02:39,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:39,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-10-17 11:02:39,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:39,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:39,275 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:39,275 INFO L175 Difference]: Start difference. First operand has 295 places, 251 transitions, 1660 flow. Second operand 19 states and 2529 transitions. [2022-10-17 11:02:39,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 321 transitions, 2964 flow [2022-10-17 11:02:39,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 321 transitions, 2756 flow, removed 104 selfloop flow, removed 10 redundant places. [2022-10-17 11:02:39,507 INFO L231 Difference]: Finished difference. Result has 303 places, 265 transitions, 1919 flow [2022-10-17 11:02:39,507 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1919, PETRI_PLACES=303, PETRI_TRANSITIONS=265} [2022-10-17 11:02:39,514 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 146 predicate places. [2022-10-17 11:02:39,514 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 265 transitions, 1919 flow [2022-10-17 11:02:39,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:39,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:39,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:39,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 11:02:39,515 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:39,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:39,516 INFO L85 PathProgramCache]: Analyzing trace with hash -896304812, now seen corresponding path program 5 times [2022-10-17 11:02:39,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:39,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443948428] [2022-10-17 11:02:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:39,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:39,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:39,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443948428] [2022-10-17 11:02:39,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443948428] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:39,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:39,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:02:39,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495283223] [2022-10-17 11:02:39,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:39,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:02:39,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:39,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:02:39,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:02:39,965 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-10-17 11:02:39,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 265 transitions, 1919 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:39,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:39,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-10-17 11:02:39,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:41,150 INFO L130 PetriNetUnfolder]: 512/2268 cut-off events. [2022-10-17 11:02:41,150 INFO L131 PetriNetUnfolder]: For 22148/22215 co-relation queries the response was YES. [2022-10-17 11:02:41,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10557 conditions, 2268 events. 512/2268 cut-off events. For 22148/22215 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 18120 event pairs, 293 based on Foata normal form. 21/2197 useless extension candidates. Maximal degree in co-relation 10270. Up to 1006 conditions per place. [2022-10-17 11:02:41,200 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 31 changer transitions 25/330 dead transitions. [2022-10-17 11:02:41,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 330 transitions, 3216 flow [2022-10-17 11:02:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-17 11:02:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-10-17 11:02:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2022-10-17 11:02:41,209 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7658802177858439 [2022-10-17 11:02:41,210 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2022-10-17 11:02:41,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2022-10-17 11:02:41,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:41,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2022-10-17 11:02:41,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:41,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:41,226 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:41,226 INFO L175 Difference]: Start difference. First operand has 303 places, 265 transitions, 1919 flow. Second operand 19 states and 2532 transitions. [2022-10-17 11:02:41,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 330 transitions, 3216 flow [2022-10-17 11:02:41,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 330 transitions, 2974 flow, removed 92 selfloop flow, removed 9 redundant places. [2022-10-17 11:02:41,367 INFO L231 Difference]: Finished difference. Result has 318 places, 282 transitions, 2170 flow [2022-10-17 11:02:41,368 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2170, PETRI_PLACES=318, PETRI_TRANSITIONS=282} [2022-10-17 11:02:41,370 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 161 predicate places. [2022-10-17 11:02:41,370 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 282 transitions, 2170 flow [2022-10-17 11:02:41,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:41,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:41,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:41,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 11:02:41,372 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash 923394942, now seen corresponding path program 3 times [2022-10-17 11:02:41,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:41,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800094608] [2022-10-17 11:02:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:41,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:41,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:41,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800094608] [2022-10-17 11:02:41,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800094608] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:41,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:41,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:02:41,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184916433] [2022-10-17 11:02:41,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:41,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:02:41,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:41,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:02:41,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:02:41,755 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-10-17 11:02:41,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 282 transitions, 2170 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:41,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:41,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-10-17 11:02:41,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:43,125 INFO L130 PetriNetUnfolder]: 523/2320 cut-off events. [2022-10-17 11:02:43,126 INFO L131 PetriNetUnfolder]: For 27916/27993 co-relation queries the response was YES. [2022-10-17 11:02:43,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11372 conditions, 2320 events. 523/2320 cut-off events. For 27916/27993 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 18702 event pairs, 283 based on Foata normal form. 8/2246 useless extension candidates. Maximal degree in co-relation 11121. Up to 1049 conditions per place. [2022-10-17 11:02:43,198 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 146 selfloop transitions, 23 changer transitions 40/364 dead transitions. [2022-10-17 11:02:43,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 364 transitions, 3747 flow [2022-10-17 11:02:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-17 11:02:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-10-17 11:02:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3581 transitions. [2022-10-17 11:02:43,209 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7622392507449979 [2022-10-17 11:02:43,209 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3581 transitions. [2022-10-17 11:02:43,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3581 transitions. [2022-10-17 11:02:43,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:43,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3581 transitions. [2022-10-17 11:02:43,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.62962962962962) internal successors, (3581), 27 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:43,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:43,235 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:43,235 INFO L175 Difference]: Start difference. First operand has 318 places, 282 transitions, 2170 flow. Second operand 27 states and 3581 transitions. [2022-10-17 11:02:43,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 364 transitions, 3747 flow [2022-10-17 11:02:43,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 364 transitions, 3402 flow, removed 170 selfloop flow, removed 9 redundant places. [2022-10-17 11:02:43,424 INFO L231 Difference]: Finished difference. Result has 347 places, 295 transitions, 2221 flow [2022-10-17 11:02:43,425 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2221, PETRI_PLACES=347, PETRI_TRANSITIONS=295} [2022-10-17 11:02:43,427 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2022-10-17 11:02:43,427 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 295 transitions, 2221 flow [2022-10-17 11:02:43,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:43,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:43,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:43,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-17 11:02:43,429 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:43,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:43,430 INFO L85 PathProgramCache]: Analyzing trace with hash 603735160, now seen corresponding path program 4 times [2022-10-17 11:02:43,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:43,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027780993] [2022-10-17 11:02:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:43,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:43,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:43,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:43,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027780993] [2022-10-17 11:02:43,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027780993] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:43,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:43,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:02:43,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305335954] [2022-10-17 11:02:43,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:43,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:02:43,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:43,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:02:43,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:02:43,814 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-10-17 11:02:43,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 295 transitions, 2221 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:43,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:43,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-10-17 11:02:43,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:45,147 INFO L130 PetriNetUnfolder]: 546/2374 cut-off events. [2022-10-17 11:02:45,147 INFO L131 PetriNetUnfolder]: For 36195/36281 co-relation queries the response was YES. [2022-10-17 11:02:45,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12441 conditions, 2374 events. 546/2374 cut-off events. For 36195/36281 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 19104 event pairs, 313 based on Foata normal form. 7/2294 useless extension candidates. Maximal degree in co-relation 12214. Up to 1063 conditions per place. [2022-10-17 11:02:45,196 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 150 selfloop transitions, 30 changer transitions 40/375 dead transitions. [2022-10-17 11:02:45,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 375 transitions, 4003 flow [2022-10-17 11:02:45,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-17 11:02:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-10-17 11:02:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3453 transitions. [2022-10-17 11:02:45,203 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.763262599469496 [2022-10-17 11:02:45,203 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3453 transitions. [2022-10-17 11:02:45,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3453 transitions. [2022-10-17 11:02:45,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:45,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3453 transitions. [2022-10-17 11:02:45,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.80769230769232) internal successors, (3453), 26 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:45,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:45,224 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:45,224 INFO L175 Difference]: Start difference. First operand has 347 places, 295 transitions, 2221 flow. Second operand 26 states and 3453 transitions. [2022-10-17 11:02:45,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 375 transitions, 4003 flow [2022-10-17 11:02:45,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 375 transitions, 3704 flow, removed 145 selfloop flow, removed 15 redundant places. [2022-10-17 11:02:45,467 INFO L231 Difference]: Finished difference. Result has 362 places, 310 transitions, 2490 flow [2022-10-17 11:02:45,468 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2490, PETRI_PLACES=362, PETRI_TRANSITIONS=310} [2022-10-17 11:02:45,468 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 205 predicate places. [2022-10-17 11:02:45,469 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 310 transitions, 2490 flow [2022-10-17 11:02:45,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:45,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:45,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:45,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-17 11:02:45,470 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:45,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:45,471 INFO L85 PathProgramCache]: Analyzing trace with hash 331886222, now seen corresponding path program 5 times [2022-10-17 11:02:45,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:45,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580055071] [2022-10-17 11:02:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:45,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:45,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:45,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580055071] [2022-10-17 11:02:45,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580055071] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:45,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:45,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:02:45,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194205764] [2022-10-17 11:02:45,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:45,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:02:45,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:45,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:02:45,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:02:45,754 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-10-17 11:02:45,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 310 transitions, 2490 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:45,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:45,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-10-17 11:02:45,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:47,096 INFO L130 PetriNetUnfolder]: 542/2364 cut-off events. [2022-10-17 11:02:47,096 INFO L131 PetriNetUnfolder]: For 43675/43753 co-relation queries the response was YES. [2022-10-17 11:02:47,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13071 conditions, 2364 events. 542/2364 cut-off events. For 43675/43753 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 19251 event pairs, 289 based on Foata normal form. 9/2283 useless extension candidates. Maximal degree in co-relation 12836. Up to 1078 conditions per place. [2022-10-17 11:02:47,148 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 164 selfloop transitions, 33 changer transitions 52/404 dead transitions. [2022-10-17 11:02:47,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 404 transitions, 4487 flow [2022-10-17 11:02:47,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-17 11:02:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-10-17 11:02:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3447 transitions. [2022-10-17 11:02:47,157 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7619363395225465 [2022-10-17 11:02:47,157 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3447 transitions. [2022-10-17 11:02:47,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3447 transitions. [2022-10-17 11:02:47,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:47,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3447 transitions. [2022-10-17 11:02:47,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.57692307692307) internal successors, (3447), 26 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:47,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:47,179 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:47,179 INFO L175 Difference]: Start difference. First operand has 362 places, 310 transitions, 2490 flow. Second operand 26 states and 3447 transitions. [2022-10-17 11:02:47,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 404 transitions, 4487 flow [2022-10-17 11:02:47,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 404 transitions, 4143 flow, removed 165 selfloop flow, removed 15 redundant places. [2022-10-17 11:02:47,406 INFO L231 Difference]: Finished difference. Result has 377 places, 320 transitions, 2726 flow [2022-10-17 11:02:47,408 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2726, PETRI_PLACES=377, PETRI_TRANSITIONS=320} [2022-10-17 11:02:47,408 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 220 predicate places. [2022-10-17 11:02:47,411 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 320 transitions, 2726 flow [2022-10-17 11:02:47,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:47,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:47,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:47,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-17 11:02:47,412 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:47,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:47,413 INFO L85 PathProgramCache]: Analyzing trace with hash 596295764, now seen corresponding path program 6 times [2022-10-17 11:02:47,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:47,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856961708] [2022-10-17 11:02:47,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:47,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:47,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:47,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856961708] [2022-10-17 11:02:47,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856961708] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:47,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:47,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:02:47,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585445200] [2022-10-17 11:02:47,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:47,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:02:47,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:47,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:02:47,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:02:47,721 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-10-17 11:02:47,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 320 transitions, 2726 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:47,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:47,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-10-17 11:02:47,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:49,058 INFO L130 PetriNetUnfolder]: 539/2327 cut-off events. [2022-10-17 11:02:49,059 INFO L131 PetriNetUnfolder]: For 43804/43882 co-relation queries the response was YES. [2022-10-17 11:02:49,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12980 conditions, 2327 events. 539/2327 cut-off events. For 43804/43882 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 18695 event pairs, 289 based on Foata normal form. 7/2246 useless extension candidates. Maximal degree in co-relation 12738. Up to 1068 conditions per place. [2022-10-17 11:02:49,115 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 175 selfloop transitions, 37 changer transitions 40/407 dead transitions. [2022-10-17 11:02:49,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 407 transitions, 4761 flow [2022-10-17 11:02:49,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-17 11:02:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-10-17 11:02:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3320 transitions. [2022-10-17 11:02:49,123 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-10-17 11:02:49,123 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3320 transitions. [2022-10-17 11:02:49,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3320 transitions. [2022-10-17 11:02:49,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:49,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3320 transitions. [2022-10-17 11:02:49,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.8) internal successors, (3320), 25 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:49,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:49,142 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:49,142 INFO L175 Difference]: Start difference. First operand has 377 places, 320 transitions, 2726 flow. Second operand 25 states and 3320 transitions. [2022-10-17 11:02:49,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 407 transitions, 4761 flow [2022-10-17 11:02:49,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 407 transitions, 4484 flow, removed 120 selfloop flow, removed 17 redundant places. [2022-10-17 11:02:49,412 INFO L231 Difference]: Finished difference. Result has 388 places, 336 transitions, 2999 flow [2022-10-17 11:02:49,413 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2605, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2999, PETRI_PLACES=388, PETRI_TRANSITIONS=336} [2022-10-17 11:02:49,414 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 231 predicate places. [2022-10-17 11:02:49,414 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 336 transitions, 2999 flow [2022-10-17 11:02:49,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:49,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:49,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:49,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-17 11:02:49,416 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:02:49,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:49,417 INFO L85 PathProgramCache]: Analyzing trace with hash 355013552, now seen corresponding path program 6 times [2022-10-17 11:02:49,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:49,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6313312] [2022-10-17 11:02:49,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:49,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat