./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN --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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- 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-6b4ec56 [2022-11-20 11:15:26,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:15:26,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:15:26,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:15:26,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:15:26,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:15:26,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:15:26,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:15:26,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:15:26,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:15:26,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:15:26,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:15:26,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:15:26,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:15:26,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:15:26,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:15:26,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:15:27,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:15:27,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:15:27,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:15:27,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:15:27,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:15:27,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:15:27,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:15:27,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:15:27,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:15:27,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:15:27,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:15:27,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:15:27,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:15:27,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:15:27,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:15:27,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:15:27,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:15:27,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:15:27,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:15:27,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:15:27,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:15:27,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:15:27,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:15:27,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:15:27,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:15:27,093 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:15:27,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:15:27,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:15:27,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:15:27,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:15:27,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:15:27,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:15:27,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:15:27,108 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:15:27,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:15:27,110 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:15:27,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:15:27,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:15:27,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:15:27,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:15:27,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:15:27,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:15:27,112 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:15:27,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:15:27,113 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:15:27,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:15:27,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:15:27,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:15:27,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:15:27,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:15:27,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:15:27,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:15:27,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:15:27,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:15:27,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:15:27,118 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:15:27,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:15:27,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:15:27,119 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_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2022-11-20 11:15:27,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:15:27,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:15:27,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:15:27,499 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:15:27,500 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:15:27,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-11-20 11:15:30,597 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:15:30,876 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:15:30,877 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-11-20 11:15:30,897 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/data/42a6af993/f6082c179c4647dbaa6af2bf1f9ee2ae/FLAG36e5c5c4f [2022-11-20 11:15:30,917 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/data/42a6af993/f6082c179c4647dbaa6af2bf1f9ee2ae [2022-11-20 11:15:30,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:15:30,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:15:30,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:15:30,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:15:30,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:15:30,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:30" (1/1) ... [2022-11-20 11:15:30,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53cde43e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:30, skipping insertion in model container [2022-11-20 11:15:30,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:30" (1/1) ... [2022-11-20 11:15:30,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:15:30,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:15:31,201 WARN L237 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_07a15ab2-d10b-4c42-98ff-34e829c5c00a/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-11-20 11:15:31,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:15:31,224 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:15:31,261 WARN L237 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_07a15ab2-d10b-4c42-98ff-34e829c5c00a/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-11-20 11:15:31,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:15:31,285 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:15:31,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31 WrapperNode [2022-11-20 11:15:31,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:15:31,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:15:31,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:15:31,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:15:31,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31" (1/1) ... [2022-11-20 11:15:31,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31" (1/1) ... [2022-11-20 11:15:31,344 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 297 [2022-11-20 11:15:31,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:15:31,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:15:31,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:15:31,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:15:31,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31" (1/1) ... [2022-11-20 11:15:31,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31" (1/1) ... [2022-11-20 11:15:31,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31" (1/1) ... [2022-11-20 11:15:31,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31" (1/1) ... [2022-11-20 11:15:31,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31" (1/1) ... [2022-11-20 11:15:31,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31" (1/1) ... [2022-11-20 11:15:31,380 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31" (1/1) ... [2022-11-20 11:15:31,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31" (1/1) ... [2022-11-20 11:15:31,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:15:31,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:15:31,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:15:31,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:15:31,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31" (1/1) ... [2022-11-20 11:15:31,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:15:31,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:15:31,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:15:31,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:15:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:15:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:15:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:15:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:15:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:15:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:15:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:15:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:15:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:15:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:15:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:15:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:15:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:15:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:15:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:15:31,513 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:15:31,680 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:15:31,683 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:15:32,368 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:15:32,383 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:15:32,383 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:15:32,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:32 BoogieIcfgContainer [2022-11-20 11:15:32,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:15:32,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:15:32,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:15:32,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:15:32,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:15:30" (1/3) ... [2022-11-20 11:15:32,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b93c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:15:32, skipping insertion in model container [2022-11-20 11:15:32,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:31" (2/3) ... [2022-11-20 11:15:32,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b93c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:15:32, skipping insertion in model container [2022-11-20 11:15:32,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:32" (3/3) ... [2022-11-20 11:15:32,398 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2022-11-20 11:15:32,409 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:15:32,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:15:32,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:15:32,423 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:15:32,724 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:15:32,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 359 places, 375 transitions, 774 flow [2022-11-20 11:15:33,103 INFO L130 PetriNetUnfolder]: 26/372 cut-off events. [2022-11-20 11:15:33,104 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:15:33,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 372 events. 26/372 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 884 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 274. Up to 2 conditions per place. [2022-11-20 11:15:33,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 359 places, 375 transitions, 774 flow [2022-11-20 11:15:33,135 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 361 transitions, 740 flow [2022-11-20 11:15:33,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:15:33,166 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;@473ec687, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:15:33,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 11:15:33,290 INFO L130 PetriNetUnfolder]: 26/360 cut-off events. [2022-11-20 11:15:33,290 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:15:33,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:15:33,291 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:15:33,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:15:33,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:33,300 INFO L85 PathProgramCache]: Analyzing trace with hash 758692583, now seen corresponding path program 1 times [2022-11-20 11:15:33,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:33,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405939196] [2022-11-20 11:15:33,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:33,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:15:33,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:33,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405939196] [2022-11-20 11:15:33,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405939196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:15:33,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:15:33,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:15:33,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372911640] [2022-11-20 11:15:33,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:15:33,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:15:33,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:33,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:15:33,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:15:33,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 375 [2022-11-20 11:15:33,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 361 transitions, 740 flow. Second operand has 2 states, 2 states have (on average 354.0) internal successors, (708), 2 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:33,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:15:33,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 375 [2022-11-20 11:15:33,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:15:33,996 INFO L130 PetriNetUnfolder]: 7/342 cut-off events. [2022-11-20 11:15:33,996 INFO L131 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-11-20 11:15:34,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 342 events. 7/342 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 853 event pairs, 0 based on Foata normal form. 36/356 useless extension candidates. Maximal degree in co-relation 263. Up to 7 conditions per place. [2022-11-20 11:15:34,007 INFO L137 encePairwiseOnDemand]: 356/375 looper letters, 6 selfloop transitions, 0 changer transitions 3/342 dead transitions. [2022-11-20 11:15:34,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 342 transitions, 714 flow [2022-11-20 11:15:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:15:34,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:15:34,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 723 transitions. [2022-11-20 11:15:34,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.964 [2022-11-20 11:15:34,036 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 723 transitions. [2022-11-20 11:15:34,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 723 transitions. [2022-11-20 11:15:34,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:15:34,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 723 transitions. [2022-11-20 11:15:34,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 361.5) internal successors, (723), 2 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:34,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:34,066 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:34,068 INFO L175 Difference]: Start difference. First operand has 345 places, 361 transitions, 740 flow. Second operand 2 states and 723 transitions. [2022-11-20 11:15:34,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 342 transitions, 714 flow [2022-11-20 11:15:34,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 342 transitions, 702 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:15:34,087 INFO L231 Difference]: Finished difference. Result has 340 places, 339 transitions, 684 flow [2022-11-20 11:15:34,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=684, PETRI_PLACES=340, PETRI_TRANSITIONS=339} [2022-11-20 11:15:34,098 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, -5 predicate places. [2022-11-20 11:15:34,098 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 339 transitions, 684 flow [2022-11-20 11:15:34,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 354.0) internal successors, (708), 2 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:34,100 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:15:34,100 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:15:34,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:15:34,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:15:34,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:34,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1759165071, now seen corresponding path program 1 times [2022-11-20 11:15:34,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:34,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994034305] [2022-11-20 11:15:34,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:34,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:15:34,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:34,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994034305] [2022-11-20 11:15:34,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994034305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:15:34,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:15:34,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:15:34,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465102960] [2022-11-20 11:15:34,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:15:34,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:15:34,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:34,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:15:34,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:15:34,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 375 [2022-11-20 11:15:34,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 339 transitions, 684 flow. Second operand has 5 states, 5 states have (on average 339.8) internal successors, (1699), 5 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:34,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:15:34,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 375 [2022-11-20 11:15:34,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:15:34,961 INFO L130 PetriNetUnfolder]: 7/345 cut-off events. [2022-11-20 11:15:34,962 INFO L131 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2022-11-20 11:15:34,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 345 events. 7/345 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 848 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 370. Up to 16 conditions per place. [2022-11-20 11:15:34,967 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 18 selfloop transitions, 4 changer transitions 0/343 dead transitions. [2022-11-20 11:15:34,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 343 transitions, 736 flow [2022-11-20 11:15:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:15:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:15:34,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1708 transitions. [2022-11-20 11:15:34,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9109333333333334 [2022-11-20 11:15:34,973 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1708 transitions. [2022-11-20 11:15:34,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1708 transitions. [2022-11-20 11:15:34,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:15:34,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1708 transitions. [2022-11-20 11:15:34,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 341.6) internal successors, (1708), 5 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:34,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:34,989 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:34,989 INFO L175 Difference]: Start difference. First operand has 340 places, 339 transitions, 684 flow. Second operand 5 states and 1708 transitions. [2022-11-20 11:15:34,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 343 transitions, 736 flow [2022-11-20 11:15:34,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 343 transitions, 736 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:15:35,002 INFO L231 Difference]: Finished difference. Result has 342 places, 340 transitions, 700 flow [2022-11-20 11:15:35,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=700, PETRI_PLACES=342, PETRI_TRANSITIONS=340} [2022-11-20 11:15:35,004 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, -3 predicate places. [2022-11-20 11:15:35,004 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 340 transitions, 700 flow [2022-11-20 11:15:35,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 339.8) internal successors, (1699), 5 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:35,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:15:35,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:15:35,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:15:35,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:15:35,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:35,008 INFO L85 PathProgramCache]: Analyzing trace with hash 218048336, now seen corresponding path program 1 times [2022-11-20 11:15:35,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:35,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418238250] [2022-11-20 11:15:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:35,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:15:35,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:35,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418238250] [2022-11-20 11:15:35,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418238250] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:15:35,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112748573] [2022-11-20 11:15:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:35,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:15:35,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:15:35,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:15:35,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:15:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:35,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:15:35,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:15:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:15:35,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:15:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:15:36,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112748573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:15:36,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:15:36,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-20 11:15:36,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666134994] [2022-11-20 11:15:36,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:15:36,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:15:36,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:36,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:15:36,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:15:36,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 375 [2022-11-20 11:15:36,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 340 transitions, 700 flow. Second operand has 14 states, 14 states have (on average 338.7857142857143) internal successors, (4743), 14 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:36,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:15:36,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 375 [2022-11-20 11:15:36,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:15:36,388 INFO L130 PetriNetUnfolder]: 7/354 cut-off events. [2022-11-20 11:15:36,388 INFO L131 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-11-20 11:15:36,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 354 events. 7/354 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 840 event pairs, 0 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 395. Up to 13 conditions per place. [2022-11-20 11:15:36,393 INFO L137 encePairwiseOnDemand]: 367/375 looper letters, 19 selfloop transitions, 11 changer transitions 0/350 dead transitions. [2022-11-20 11:15:36,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 350 transitions, 782 flow [2022-11-20 11:15:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:15:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:15:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3728 transitions. [2022-11-20 11:15:36,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9037575757575758 [2022-11-20 11:15:36,401 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3728 transitions. [2022-11-20 11:15:36,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3728 transitions. [2022-11-20 11:15:36,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:15:36,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3728 transitions. [2022-11-20 11:15:36,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 338.90909090909093) internal successors, (3728), 11 states have internal predecessors, (3728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:36,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 375.0) internal successors, (4500), 12 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:36,425 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 375.0) internal successors, (4500), 12 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:36,425 INFO L175 Difference]: Start difference. First operand has 342 places, 340 transitions, 700 flow. Second operand 11 states and 3728 transitions. [2022-11-20 11:15:36,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 350 transitions, 782 flow [2022-11-20 11:15:36,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 350 transitions, 776 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:15:36,433 INFO L231 Difference]: Finished difference. Result has 352 places, 346 transitions, 749 flow [2022-11-20 11:15:36,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=749, PETRI_PLACES=352, PETRI_TRANSITIONS=346} [2022-11-20 11:15:36,435 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 7 predicate places. [2022-11-20 11:15:36,435 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 346 transitions, 749 flow [2022-11-20 11:15:36,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 338.7857142857143) internal successors, (4743), 14 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:36,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:15:36,438 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:15:36,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:15:36,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a15ab2-d10b-4c42-98ff-34e829c5c00a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:15:36,646 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:15:36,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:36,646 INFO L85 PathProgramCache]: Analyzing trace with hash 681717692, now seen corresponding path program 2 times [2022-11-20 11:15:36,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:36,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826347714] [2022-11-20 11:15:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:36,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:37,912 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:15:37,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:37,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826347714] [2022-11-20 11:15:37,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826347714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:15:37,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:15:37,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 11:15:37,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204534413] [2022-11-20 11:15:37,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:15:37,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:15:37,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:15:37,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:15:37,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 375 [2022-11-20 11:15:37,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 346 transitions, 749 flow. Second operand has 14 states, 14 states have (on average 284.57142857142856) internal successors, (3984), 14 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:37,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:15:37,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 375 [2022-11-20 11:15:37,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:15:46,059 INFO L130 PetriNetUnfolder]: 9365/31795 cut-off events. [2022-11-20 11:15:46,060 INFO L131 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2022-11-20 11:15:46,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46314 conditions, 31795 events. 9365/31795 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 417788 event pairs, 2932 based on Foata normal form. 1/28886 useless extension candidates. Maximal degree in co-relation 46306. Up to 4897 conditions per place. [2022-11-20 11:15:46,463 INFO L137 encePairwiseOnDemand]: 348/375 looper letters, 308 selfloop transitions, 46 changer transitions 10/639 dead transitions. [2022-11-20 11:15:46,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 639 transitions, 2094 flow [2022-11-20 11:15:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:15:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 11:15:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6547 transitions. [2022-11-20 11:15:46,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7935757575757576 [2022-11-20 11:15:46,487 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6547 transitions. [2022-11-20 11:15:46,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6547 transitions. [2022-11-20 11:15:46,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:15:46,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6547 transitions. [2022-11-20 11:15:46,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 297.59090909090907) internal successors, (6547), 22 states have internal predecessors, (6547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:46,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 375.0) internal successors, (8625), 23 states have internal predecessors, (8625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:46,538 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 375.0) internal successors, (8625), 23 states have internal predecessors, (8625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:46,538 INFO L175 Difference]: Start difference. First operand has 352 places, 346 transitions, 749 flow. Second operand 22 states and 6547 transitions. [2022-11-20 11:15:46,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 639 transitions, 2094 flow [2022-11-20 11:15:46,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 639 transitions, 2085 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-20 11:15:46,560 INFO L231 Difference]: Finished difference. Result has 386 places, 383 transitions, 1039 flow [2022-11-20 11:15:46,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1039, PETRI_PLACES=386, PETRI_TRANSITIONS=383} [2022-11-20 11:15:46,563 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 41 predicate places. [2022-11-20 11:15:46,564 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 383 transitions, 1039 flow [2022-11-20 11:15:46,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 284.57142857142856) internal successors, (3984), 14 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:46,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:15:46,586 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:15:46,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:15:46,587 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:15:46,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1938674644, now seen corresponding path program 3 times [2022-11-20 11:15:46,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:46,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121073415] [2022-11-20 11:15:46,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:46,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:15:47,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:47,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121073415] [2022-11-20 11:15:47,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121073415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:15:47,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:15:47,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 11:15:47,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352003066] [2022-11-20 11:15:47,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:15:47,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:15:47,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:47,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:15:47,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:15:47,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 375 [2022-11-20 11:15:47,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 383 transitions, 1039 flow. Second operand has 14 states, 14 states have (on average 284.57142857142856) internal successors, (3984), 14 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:47,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:15:47,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 375 [2022-11-20 11:15:47,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:00,010 INFO L130 PetriNetUnfolder]: 16781/55610 cut-off events. [2022-11-20 11:16:00,011 INFO L131 PetriNetUnfolder]: For 22675/22721 co-relation queries the response was YES. [2022-11-20 11:16:00,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101747 conditions, 55610 events. 16781/55610 cut-off events. For 22675/22721 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 774023 event pairs, 5454 based on Foata normal form. 1/51623 useless extension candidates. Maximal degree in co-relation 101723. Up to 8908 conditions per place. [2022-11-20 11:16:00,892 INFO L137 encePairwiseOnDemand]: 350/375 looper letters, 361 selfloop transitions, 68 changer transitions 10/714 dead transitions. [2022-11-20 11:16:00,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 714 transitions, 3046 flow [2022-11-20 11:16:00,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:16:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 11:16:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5982 transitions. [2022-11-20 11:16:00,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7976 [2022-11-20 11:16:00,909 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5982 transitions. [2022-11-20 11:16:00,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5982 transitions. [2022-11-20 11:16:00,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:00,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5982 transitions. [2022-11-20 11:16:00,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 299.1) internal successors, (5982), 20 states have internal predecessors, (5982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:00,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 375.0) internal successors, (7875), 21 states have internal predecessors, (7875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:00,945 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 375.0) internal successors, (7875), 21 states have internal predecessors, (7875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:00,946 INFO L175 Difference]: Start difference. First operand has 386 places, 383 transitions, 1039 flow. Second operand 20 states and 5982 transitions. [2022-11-20 11:16:00,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 714 transitions, 3046 flow [2022-11-20 11:16:01,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 714 transitions, 3022 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-11-20 11:16:01,572 INFO L231 Difference]: Finished difference. Result has 414 places, 424 transitions, 1572 flow [2022-11-20 11:16:01,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1572, PETRI_PLACES=414, PETRI_TRANSITIONS=424} [2022-11-20 11:16:01,576 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 69 predicate places. [2022-11-20 11:16:01,577 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 424 transitions, 1572 flow [2022-11-20 11:16:01,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 284.57142857142856) internal successors, (3984), 14 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:01,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:01,579 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:16:01,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:16:01,580 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:16:01,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:01,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1803993932, now seen corresponding path program 4 times [2022-11-20 11:16:01,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:01,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501371414] [2022-11-20 11:16:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:01,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:16:02,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:02,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501371414] [2022-11-20 11:16:02,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501371414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:02,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:02,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 11:16:02,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135030150] [2022-11-20 11:16:02,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:02,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:16:02,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:02,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:16:02,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:16:02,791 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 375 [2022-11-20 11:16:02,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 424 transitions, 1572 flow. Second operand has 14 states, 14 states have (on average 284.57142857142856) internal successors, (3984), 14 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:02,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:02,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 375 [2022-11-20 11:16:02,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:22,298 INFO L130 PetriNetUnfolder]: 23224/81317 cut-off events. [2022-11-20 11:16:22,299 INFO L131 PetriNetUnfolder]: For 89435/89731 co-relation queries the response was YES. [2022-11-20 11:16:23,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166746 conditions, 81317 events. 23224/81317 cut-off events. For 89435/89731 co-relation queries the response was YES. Maximal size of possible extension queue 2529. Compared 1215485 event pairs, 6697 based on Foata normal form. 16/75529 useless extension candidates. Maximal degree in co-relation 166707. Up to 11537 conditions per place. [2022-11-20 11:16:23,937 INFO L137 encePairwiseOnDemand]: 347/375 looper letters, 495 selfloop transitions, 129 changer transitions 10/909 dead transitions. [2022-11-20 11:16:23,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 909 transitions, 5232 flow [2022-11-20 11:16:23,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 11:16:23,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-20 11:16:23,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 7808 transitions. [2022-11-20 11:16:23,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8008205128205128 [2022-11-20 11:16:23,975 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 7808 transitions. [2022-11-20 11:16:23,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 7808 transitions. [2022-11-20 11:16:23,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:23,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 7808 transitions. [2022-11-20 11:16:24,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 300.3076923076923) internal successors, (7808), 26 states have internal predecessors, (7808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:24,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 375.0) internal successors, (10125), 27 states have internal predecessors, (10125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:24,034 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 375.0) internal successors, (10125), 27 states have internal predecessors, (10125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:24,034 INFO L175 Difference]: Start difference. First operand has 414 places, 424 transitions, 1572 flow. Second operand 26 states and 7808 transitions. [2022-11-20 11:16:24,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 909 transitions, 5232 flow [2022-11-20 11:16:26,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 909 transitions, 5016 flow, removed 107 selfloop flow, removed 3 redundant places. [2022-11-20 11:16:26,284 INFO L231 Difference]: Finished difference. Result has 453 places, 533 transitions, 3083 flow [2022-11-20 11:16:26,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3083, PETRI_PLACES=453, PETRI_TRANSITIONS=533} [2022-11-20 11:16:26,286 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 108 predicate places. [2022-11-20 11:16:26,286 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 533 transitions, 3083 flow [2022-11-20 11:16:26,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 284.57142857142856) internal successors, (3984), 14 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:26,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:26,288 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:16:26,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:16:26,289 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:16:26,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:26,290 INFO L85 PathProgramCache]: Analyzing trace with hash -927029736, now seen corresponding path program 5 times [2022-11-20 11:16:26,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:26,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211550480] [2022-11-20 11:16:26,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:26,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:16:27,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:27,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211550480] [2022-11-20 11:16:27,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211550480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:27,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:27,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 11:16:27,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909551580] [2022-11-20 11:16:27,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:27,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:16:27,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:27,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:16:27,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:16:27,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 375 [2022-11-20 11:16:27,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 533 transitions, 3083 flow. Second operand has 14 states, 14 states have (on average 284.57142857142856) internal successors, (3984), 14 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:27,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:27,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 375 [2022-11-20 11:16:27,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand