./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:04:59,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:04:59,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:04:59,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:04:59,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:04:59,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:04:59,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:04:59,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:04:59,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:04:59,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:04:59,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:04:59,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:04:59,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:04:59,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:04:59,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:04:59,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:04:59,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:04:59,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:04:59,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:04:59,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:04:59,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:04:59,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:04:59,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:04:59,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:04:59,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:04:59,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:04:59,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:04:59,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:04:59,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:04:59,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:04:59,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:04:59,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:04:59,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:04:59,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:04:59,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:04:59,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:04:59,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:04:59,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:04:59,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:04:59,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:04:59,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:04:59,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:04:59,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:04:59,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:04:59,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:04:59,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:04:59,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:04:59,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:04:59,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:04:59,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:05:00,000 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:05:00,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:05:00,000 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:05:00,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:05:00,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:05:00,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:05:00,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:05:00,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:05:00,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:05:00,001 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:05:00,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:05:00,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:05:00,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:05:00,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:05:00,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:05:00,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:05:00,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:00,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:05:00,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:05:00,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:05:00,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:05:00,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:05:00,004 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:05:00,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:05:00,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:05:00,005 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_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 [2022-11-16 12:05:00,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:05:00,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:05:00,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:05:00,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:05:00,418 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:05:00,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2022-11-16 12:05:00,507 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/data/b89fb6305/0cd409eec5ac4a69898f3125b683df21/FLAGedaa854dc [2022-11-16 12:05:01,193 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:05:01,193 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2022-11-16 12:05:01,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/data/b89fb6305/0cd409eec5ac4a69898f3125b683df21/FLAGedaa854dc [2022-11-16 12:05:01,517 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/data/b89fb6305/0cd409eec5ac4a69898f3125b683df21 [2022-11-16 12:05:01,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:05:01,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:05:01,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:01,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:05:01,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:05:01,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:01" (1/1) ... [2022-11-16 12:05:01,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44cf6b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:01, skipping insertion in model container [2022-11-16 12:05:01,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:01" (1/1) ... [2022-11-16 12:05:01,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:05:01,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:05:01,909 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-11-16 12:05:01,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:01,955 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:05:02,009 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-11-16 12:05:02,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:02,047 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:05:02,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02 WrapperNode [2022-11-16 12:05:02,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:02,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:02,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:05:02,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:05:02,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02" (1/1) ... [2022-11-16 12:05:02,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02" (1/1) ... [2022-11-16 12:05:02,148 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 281 [2022-11-16 12:05:02,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:02,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:05:02,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:05:02,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:05:02,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02" (1/1) ... [2022-11-16 12:05:02,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02" (1/1) ... [2022-11-16 12:05:02,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02" (1/1) ... [2022-11-16 12:05:02,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02" (1/1) ... [2022-11-16 12:05:02,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02" (1/1) ... [2022-11-16 12:05:02,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02" (1/1) ... [2022-11-16 12:05:02,220 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02" (1/1) ... [2022-11-16 12:05:02,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02" (1/1) ... [2022-11-16 12:05:02,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:05:02,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:05:02,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:05:02,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:05:02,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02" (1/1) ... [2022-11-16 12:05:02,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:02,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:02,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:05:02,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:05:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:05:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:05:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:05:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:05:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:05:02,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:05:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:05:02,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:05:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:05:02,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:05:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:05:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:05:02,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:05:02,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:05:02,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:05:02,359 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:05:02,581 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:05:02,584 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:05:03,280 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:05:03,308 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:05:03,309 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 12:05:03,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:03 BoogieIcfgContainer [2022-11-16 12:05:03,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:05:03,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:05:03,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:05:03,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:05:03,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:05:01" (1/3) ... [2022-11-16 12:05:03,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644f3157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:03, skipping insertion in model container [2022-11-16 12:05:03,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:02" (2/3) ... [2022-11-16 12:05:03,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644f3157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:03, skipping insertion in model container [2022-11-16 12:05:03,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:03" (3/3) ... [2022-11-16 12:05:03,323 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2022-11-16 12:05:03,333 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:05:03,346 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:05:03,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:05:03,346 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:05:03,482 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:05:03,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 358 transitions, 740 flow [2022-11-16 12:05:03,840 INFO L130 PetriNetUnfolder]: 29/355 cut-off events. [2022-11-16 12:05:03,840 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:05:03,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 355 events. 29/355 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 582 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-11-16 12:05:03,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 358 transitions, 740 flow [2022-11-16 12:05:03,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 344 transitions, 706 flow [2022-11-16 12:05:03,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:05:03,893 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;@424f3357, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:05:03,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:05:04,010 INFO L130 PetriNetUnfolder]: 29/343 cut-off events. [2022-11-16 12:05:04,010 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:05:04,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:04,011 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] [2022-11-16 12:05:04,013 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)] === [2022-11-16 12:05:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:04,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1964627151, now seen corresponding path program 1 times [2022-11-16 12:05:04,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:04,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442176709] [2022-11-16 12:05:04,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:04,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:04,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:04,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442176709] [2022-11-16 12:05:04,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442176709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:04,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:04,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:05:04,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428220775] [2022-11-16 12:05:04,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:04,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:05:04,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:04,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:05:04,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:05:04,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 358 [2022-11-16 12:05:04,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 344 transitions, 706 flow. Second operand has 2 states, 2 states have (on average 337.0) internal successors, (674), 2 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:04,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:04,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 358 [2022-11-16 12:05:04,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:04,771 INFO L130 PetriNetUnfolder]: 9/324 cut-off events. [2022-11-16 12:05:04,771 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-16 12:05:04,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 324 events. 9/324 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 567 event pairs, 0 based on Foata normal form. 26/327 useless extension candidates. Maximal degree in co-relation 256. Up to 7 conditions per place. [2022-11-16 12:05:04,782 INFO L137 encePairwiseOnDemand]: 338/358 looper letters, 6 selfloop transitions, 0 changer transitions 8/324 dead transitions. [2022-11-16 12:05:04,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 324 transitions, 678 flow [2022-11-16 12:05:04,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:05:04,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:05:04,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 688 transitions. [2022-11-16 12:05:04,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9608938547486033 [2022-11-16 12:05:04,813 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 688 transitions. [2022-11-16 12:05:04,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 688 transitions. [2022-11-16 12:05:04,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:04,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 688 transitions. [2022-11-16 12:05:04,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 344.0) internal successors, (688), 2 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:04,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:04,844 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:04,846 INFO L175 Difference]: Start difference. First operand has 325 places, 344 transitions, 706 flow. Second operand 2 states and 688 transitions. [2022-11-16 12:05:04,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 324 transitions, 678 flow [2022-11-16 12:05:04,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 324 transitions, 666 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:05:04,871 INFO L231 Difference]: Finished difference. Result has 320 places, 316 transitions, 638 flow [2022-11-16 12:05:04,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=638, PETRI_PLACES=320, PETRI_TRANSITIONS=316} [2022-11-16 12:05:04,878 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, -5 predicate places. [2022-11-16 12:05:04,879 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 316 transitions, 638 flow [2022-11-16 12:05:04,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 337.0) internal successors, (674), 2 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:04,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:04,881 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] [2022-11-16 12:05:04,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:05:04,882 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)] === [2022-11-16 12:05:04,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:04,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1305423389, now seen corresponding path program 1 times [2022-11-16 12:05:04,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:04,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88566214] [2022-11-16 12:05:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:04,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:08,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:08,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88566214] [2022-11-16 12:05:08,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88566214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:08,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:08,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-16 12:05:08,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843588553] [2022-11-16 12:05:08,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:08,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:05:08,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:05:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:05:08,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-11-16 12:05:08,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 316 transitions, 638 flow. Second operand has 28 states, 28 states have (on average 242.53571428571428) internal successors, (6791), 28 states have internal predecessors, (6791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:08,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:08,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-11-16 12:05:08,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:15,608 INFO L130 PetriNetUnfolder]: 1774/13195 cut-off events. [2022-11-16 12:05:15,608 INFO L131 PetriNetUnfolder]: For 189/221 co-relation queries the response was YES. [2022-11-16 12:05:15,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15713 conditions, 13195 events. 1774/13195 cut-off events. For 189/221 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 162713 event pairs, 970 based on Foata normal form. 1/11689 useless extension candidates. Maximal degree in co-relation 15710. Up to 497 conditions per place. [2022-11-16 12:05:15,774 INFO L137 encePairwiseOnDemand]: 319/358 looper letters, 250 selfloop transitions, 40 changer transitions 8/525 dead transitions. [2022-11-16 12:05:15,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 525 transitions, 1682 flow [2022-11-16 12:05:15,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:05:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:05:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8699 transitions. [2022-11-16 12:05:15,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6942537909018356 [2022-11-16 12:05:15,797 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8699 transitions. [2022-11-16 12:05:15,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8699 transitions. [2022-11-16 12:05:15,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:15,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8699 transitions. [2022-11-16 12:05:15,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 248.54285714285714) internal successors, (8699), 35 states have internal predecessors, (8699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:15,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 358.0) internal successors, (12888), 36 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:15,915 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 358.0) internal successors, (12888), 36 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:15,915 INFO L175 Difference]: Start difference. First operand has 320 places, 316 transitions, 638 flow. Second operand 35 states and 8699 transitions. [2022-11-16 12:05:15,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 525 transitions, 1682 flow [2022-11-16 12:05:15,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 525 transitions, 1682 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:05:15,927 INFO L231 Difference]: Finished difference. Result has 368 places, 347 transitions, 897 flow [2022-11-16 12:05:15,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=897, PETRI_PLACES=368, PETRI_TRANSITIONS=347} [2022-11-16 12:05:15,929 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 43 predicate places. [2022-11-16 12:05:15,929 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 347 transitions, 897 flow [2022-11-16 12:05:15,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 242.53571428571428) internal successors, (6791), 28 states have internal predecessors, (6791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:15,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:15,933 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] [2022-11-16 12:05:15,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:05:15,934 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)] === [2022-11-16 12:05:15,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:15,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1445626541, now seen corresponding path program 2 times [2022-11-16 12:05:15,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:15,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421413180] [2022-11-16 12:05:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:15,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:17,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:17,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421413180] [2022-11-16 12:05:17,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421413180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:17,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:17,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:05:17,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8392937] [2022-11-16 12:05:17,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:17,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:05:17,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:17,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:05:17,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:05:17,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-11-16 12:05:17,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 347 transitions, 897 flow. Second operand has 19 states, 19 states have (on average 243.73684210526315) internal successors, (4631), 19 states have internal predecessors, (4631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:17,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:17,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-11-16 12:05:17,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:24,966 INFO L130 PetriNetUnfolder]: 3209/23446 cut-off events. [2022-11-16 12:05:24,966 INFO L131 PetriNetUnfolder]: For 4005/5032 co-relation queries the response was YES. [2022-11-16 12:05:25,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30748 conditions, 23446 events. 3209/23446 cut-off events. For 4005/5032 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 322408 event pairs, 1293 based on Foata normal form. 30/20675 useless extension candidates. Maximal degree in co-relation 30722. Up to 1422 conditions per place. [2022-11-16 12:05:25,293 INFO L137 encePairwiseOnDemand]: 332/358 looper letters, 162 selfloop transitions, 46 changer transitions 8/443 dead transitions. [2022-11-16 12:05:25,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 443 transitions, 1658 flow [2022-11-16 12:05:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:05:25,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:05:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5462 transitions. [2022-11-16 12:05:25,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6934992381919757 [2022-11-16 12:05:25,308 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5462 transitions. [2022-11-16 12:05:25,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5462 transitions. [2022-11-16 12:05:25,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:25,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5462 transitions. [2022-11-16 12:05:25,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 248.27272727272728) internal successors, (5462), 22 states have internal predecessors, (5462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:25,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 358.0) internal successors, (8234), 23 states have internal predecessors, (8234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:25,514 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 358.0) internal successors, (8234), 23 states have internal predecessors, (8234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:25,514 INFO L175 Difference]: Start difference. First operand has 368 places, 347 transitions, 897 flow. Second operand 22 states and 5462 transitions. [2022-11-16 12:05:25,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 443 transitions, 1658 flow [2022-11-16 12:05:25,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 443 transitions, 1601 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-11-16 12:05:25,557 INFO L231 Difference]: Finished difference. Result has 385 places, 362 transitions, 1132 flow [2022-11-16 12:05:25,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1132, PETRI_PLACES=385, PETRI_TRANSITIONS=362} [2022-11-16 12:05:25,561 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 60 predicate places. [2022-11-16 12:05:25,561 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 362 transitions, 1132 flow [2022-11-16 12:05:25,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 243.73684210526315) internal successors, (4631), 19 states have internal predecessors, (4631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:25,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:25,564 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] [2022-11-16 12:05:25,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:05:25,565 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)] === [2022-11-16 12:05:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:25,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1678382041, now seen corresponding path program 3 times [2022-11-16 12:05:25,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:25,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586983111] [2022-11-16 12:05:25,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:25,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:28,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:28,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:28,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586983111] [2022-11-16 12:05:28,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586983111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:28,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:28,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-16 12:05:28,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846409026] [2022-11-16 12:05:28,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:28,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:05:28,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:28,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:05:28,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:05:28,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-11-16 12:05:28,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 362 transitions, 1132 flow. Second operand has 28 states, 28 states have (on average 242.53571428571428) internal successors, (6791), 28 states have internal predecessors, (6791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:28,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:28,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-11-16 12:05:28,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:36,795 INFO L130 PetriNetUnfolder]: 3266/24610 cut-off events. [2022-11-16 12:05:36,795 INFO L131 PetriNetUnfolder]: For 10896/13170 co-relation queries the response was YES. [2022-11-16 12:05:37,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34383 conditions, 24610 events. 3266/24610 cut-off events. For 10896/13170 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 341885 event pairs, 1765 based on Foata normal form. 54/21768 useless extension candidates. Maximal degree in co-relation 34351. Up to 1340 conditions per place. [2022-11-16 12:05:37,132 INFO L137 encePairwiseOnDemand]: 317/358 looper letters, 277 selfloop transitions, 47 changer transitions 8/559 dead transitions. [2022-11-16 12:05:37,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 559 transitions, 2581 flow [2022-11-16 12:05:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 12:05:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 12:05:37,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 9178 transitions. [2022-11-16 12:05:37,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6928884191454023 [2022-11-16 12:05:37,156 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 9178 transitions. [2022-11-16 12:05:37,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 9178 transitions. [2022-11-16 12:05:37,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:37,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 9178 transitions. [2022-11-16 12:05:37,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 248.05405405405406) internal successors, (9178), 37 states have internal predecessors, (9178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:37,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 358.0) internal successors, (13604), 38 states have internal predecessors, (13604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:37,210 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 358.0) internal successors, (13604), 38 states have internal predecessors, (13604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:37,210 INFO L175 Difference]: Start difference. First operand has 385 places, 362 transitions, 1132 flow. Second operand 37 states and 9178 transitions. [2022-11-16 12:05:37,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 559 transitions, 2581 flow [2022-11-16 12:05:37,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 559 transitions, 2436 flow, removed 52 selfloop flow, removed 15 redundant places. [2022-11-16 12:05:37,245 INFO L231 Difference]: Finished difference. Result has 410 places, 371 transitions, 1297 flow [2022-11-16 12:05:37,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1297, PETRI_PLACES=410, PETRI_TRANSITIONS=371} [2022-11-16 12:05:37,246 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 85 predicate places. [2022-11-16 12:05:37,247 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 371 transitions, 1297 flow [2022-11-16 12:05:37,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 242.53571428571428) internal successors, (6791), 28 states have internal predecessors, (6791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:37,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:37,249 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] [2022-11-16 12:05:37,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:05:37,250 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)] === [2022-11-16 12:05:37,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash 23934303, now seen corresponding path program 4 times [2022-11-16 12:05:37,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:37,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600422987] [2022-11-16 12:05:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:40,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:40,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600422987] [2022-11-16 12:05:40,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600422987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:40,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:40,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-16 12:05:40,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121203857] [2022-11-16 12:05:40,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:40,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:05:40,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:40,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:05:40,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:05:40,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-11-16 12:05:40,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 371 transitions, 1297 flow. Second operand has 29 states, 29 states have (on average 242.44827586206895) internal successors, (7031), 29 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:40,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:40,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-11-16 12:05:40,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:49,624 INFO L130 PetriNetUnfolder]: 3173/23185 cut-off events. [2022-11-16 12:05:49,625 INFO L131 PetriNetUnfolder]: For 16690/19097 co-relation queries the response was YES. [2022-11-16 12:05:49,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34253 conditions, 23185 events. 3173/23185 cut-off events. For 16690/19097 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 318023 event pairs, 833 based on Foata normal form. 98/20507 useless extension candidates. Maximal degree in co-relation 34217. Up to 1250 conditions per place. [2022-11-16 12:05:49,930 INFO L137 encePairwiseOnDemand]: 317/358 looper letters, 308 selfloop transitions, 63 changer transitions 8/606 dead transitions. [2022-11-16 12:05:49,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 606 transitions, 3131 flow [2022-11-16 12:05:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 12:05:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-16 12:05:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 10168 transitions. [2022-11-16 12:05:49,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6927374301675978 [2022-11-16 12:05:49,955 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 10168 transitions. [2022-11-16 12:05:49,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 10168 transitions. [2022-11-16 12:05:49,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:49,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 10168 transitions. [2022-11-16 12:05:49,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 248.0) internal successors, (10168), 41 states have internal predecessors, (10168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:50,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 358.0) internal successors, (15036), 42 states have internal predecessors, (15036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:50,019 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 358.0) internal successors, (15036), 42 states have internal predecessors, (15036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:50,020 INFO L175 Difference]: Start difference. First operand has 410 places, 371 transitions, 1297 flow. Second operand 41 states and 10168 transitions. [2022-11-16 12:05:50,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 606 transitions, 3131 flow [2022-11-16 12:05:50,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 606 transitions, 2984 flow, removed 41 selfloop flow, removed 32 redundant places. [2022-11-16 12:05:50,072 INFO L231 Difference]: Finished difference. Result has 425 places, 400 transitions, 1701 flow [2022-11-16 12:05:50,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1701, PETRI_PLACES=425, PETRI_TRANSITIONS=400} [2022-11-16 12:05:50,077 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 100 predicate places. [2022-11-16 12:05:50,077 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 400 transitions, 1701 flow [2022-11-16 12:05:50,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 242.44827586206895) internal successors, (7031), 29 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:50,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:50,080 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] [2022-11-16 12:05:50,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:05:50,081 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)] === [2022-11-16 12:05:50,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash -404705331, now seen corresponding path program 5 times [2022-11-16 12:05:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:50,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971359170] [2022-11-16 12:05:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:50,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:52,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:52,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971359170] [2022-11-16 12:05:52,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971359170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:52,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:52,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:05:52,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041249482] [2022-11-16 12:05:52,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:52,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:05:52,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:52,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:05:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:05:52,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-11-16 12:05:52,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 400 transitions, 1701 flow. Second operand has 26 states, 26 states have (on average 242.73076923076923) internal successors, (6311), 26 states have internal predecessors, (6311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:52,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:52,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-11-16 12:05:52,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:04,431 INFO L130 PetriNetUnfolder]: 3575/26717 cut-off events. [2022-11-16 12:06:04,432 INFO L131 PetriNetUnfolder]: For 27920/30924 co-relation queries the response was YES. [2022-11-16 12:06:04,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41438 conditions, 26717 events. 3575/26717 cut-off events. For 27920/30924 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 375508 event pairs, 1287 based on Foata normal form. 141/23635 useless extension candidates. Maximal degree in co-relation 41395. Up to 1341 conditions per place. [2022-11-16 12:06:04,980 INFO L137 encePairwiseOnDemand]: 319/358 looper letters, 350 selfloop transitions, 87 changer transitions 16/680 dead transitions. [2022-11-16 12:06:04,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 680 transitions, 4007 flow [2022-11-16 12:06:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 12:06:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-16 12:06:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 12375 transitions. [2022-11-16 12:06:04,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6913407821229051 [2022-11-16 12:06:04,999 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 12375 transitions. [2022-11-16 12:06:04,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 12375 transitions. [2022-11-16 12:06:05,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:05,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 12375 transitions. [2022-11-16 12:06:05,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 247.5) internal successors, (12375), 50 states have internal predecessors, (12375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:05,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 358.0) internal successors, (18258), 51 states have internal predecessors, (18258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:05,055 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 358.0) internal successors, (18258), 51 states have internal predecessors, (18258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:05,056 INFO L175 Difference]: Start difference. First operand has 425 places, 400 transitions, 1701 flow. Second operand 50 states and 12375 transitions. [2022-11-16 12:06:05,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 680 transitions, 4007 flow [2022-11-16 12:06:05,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 680 transitions, 3797 flow, removed 76 selfloop flow, removed 30 redundant places. [2022-11-16 12:06:05,139 INFO L231 Difference]: Finished difference. Result has 460 places, 440 transitions, 2363 flow [2022-11-16 12:06:05,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2363, PETRI_PLACES=460, PETRI_TRANSITIONS=440} [2022-11-16 12:06:05,141 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 135 predicate places. [2022-11-16 12:06:05,141 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 440 transitions, 2363 flow [2022-11-16 12:06:05,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 242.73076923076923) internal successors, (6311), 26 states have internal predecessors, (6311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:05,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:05,143 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] [2022-11-16 12:06:05,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:06:05,143 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)] === [2022-11-16 12:06:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1476798739, now seen corresponding path program 6 times [2022-11-16 12:06:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:05,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963518565] [2022-11-16 12:06:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:05,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:07,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:07,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963518565] [2022-11-16 12:06:07,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963518565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:07,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:07,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-16 12:06:07,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629508011] [2022-11-16 12:06:07,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:07,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 12:06:07,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 12:06:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2022-11-16 12:06:07,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-11-16 12:06:07,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 440 transitions, 2363 flow. Second operand has 27 states, 27 states have (on average 242.62962962962962) internal successors, (6551), 27 states have internal predecessors, (6551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:07,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:07,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-11-16 12:06:07,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:20,047 INFO L130 PetriNetUnfolder]: 3558/26498 cut-off events. [2022-11-16 12:06:20,048 INFO L131 PetriNetUnfolder]: For 43267/47199 co-relation queries the response was YES. [2022-11-16 12:06:20,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43783 conditions, 26498 events. 3558/26498 cut-off events. For 43267/47199 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 371730 event pairs, 1296 based on Foata normal form. 229/23520 useless extension candidates. Maximal degree in co-relation 43723. Up to 1341 conditions per place. [2022-11-16 12:06:20,504 INFO L137 encePairwiseOnDemand]: 319/358 looper letters, 349 selfloop transitions, 91 changer transitions 9/676 dead transitions. [2022-11-16 12:06:20,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 676 transitions, 4443 flow [2022-11-16 12:06:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 12:06:20,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 12:06:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 11167 transitions. [2022-11-16 12:06:20,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6931719428926133 [2022-11-16 12:06:20,522 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 11167 transitions. [2022-11-16 12:06:20,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 11167 transitions. [2022-11-16 12:06:20,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:20,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 11167 transitions. [2022-11-16 12:06:20,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 248.15555555555557) internal successors, (11167), 45 states have internal predecessors, (11167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:20,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 358.0) internal successors, (16468), 46 states have internal predecessors, (16468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:20,574 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 358.0) internal successors, (16468), 46 states have internal predecessors, (16468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:20,574 INFO L175 Difference]: Start difference. First operand has 460 places, 440 transitions, 2363 flow. Second operand 45 states and 11167 transitions. [2022-11-16 12:06:20,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 676 transitions, 4443 flow [2022-11-16 12:06:20,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 676 transitions, 4064 flow, removed 154 selfloop flow, removed 32 redundant places. [2022-11-16 12:06:20,802 INFO L231 Difference]: Finished difference. Result has 471 places, 448 transitions, 2535 flow [2022-11-16 12:06:20,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2535, PETRI_PLACES=471, PETRI_TRANSITIONS=448} [2022-11-16 12:06:20,805 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 146 predicate places. [2022-11-16 12:06:20,805 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 448 transitions, 2535 flow [2022-11-16 12:06:20,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 242.62962962962962) internal successors, (6551), 27 states have internal predecessors, (6551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:20,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:20,808 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] [2022-11-16 12:06:20,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:06:20,808 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:06:20,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:20,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1782971837, now seen corresponding path program 1 times [2022-11-16 12:06:20,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:20,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896226091] [2022-11-16 12:06:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:20,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:21,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:21,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896226091] [2022-11-16 12:06:21,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896226091] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:21,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061002203] [2022-11-16 12:06:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:21,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:21,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:21,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:21,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:06:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:21,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:06:21,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:22,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:22,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061002203] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:22,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:06:22,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-11-16 12:06:22,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938628780] [2022-11-16 12:06:22,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:22,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:06:22,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:22,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:06:22,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:06:22,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 358 [2022-11-16 12:06:22,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 448 transitions, 2535 flow. Second operand has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:22,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:22,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 358 [2022-11-16 12:06:22,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:31,571 INFO L130 PetriNetUnfolder]: 3947/32797 cut-off events. [2022-11-16 12:06:31,571 INFO L131 PetriNetUnfolder]: For 46969/49503 co-relation queries the response was YES. [2022-11-16 12:06:32,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51651 conditions, 32797 events. 3947/32797 cut-off events. For 46969/49503 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 482846 event pairs, 2169 based on Foata normal form. 86/29201 useless extension candidates. Maximal degree in co-relation 51591. Up to 2996 conditions per place. [2022-11-16 12:06:32,112 INFO L137 encePairwiseOnDemand]: 336/358 looper letters, 250 selfloop transitions, 41 changer transitions 4/570 dead transitions. [2022-11-16 12:06:32,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 570 transitions, 3726 flow [2022-11-16 12:06:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:06:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:06:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4632 transitions. [2022-11-16 12:06:32,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7188081936685289 [2022-11-16 12:06:32,120 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4632 transitions. [2022-11-16 12:06:32,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4632 transitions. [2022-11-16 12:06:32,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:32,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4632 transitions. [2022-11-16 12:06:32,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 257.3333333333333) internal successors, (4632), 18 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:32,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 358.0) internal successors, (6802), 19 states have internal predecessors, (6802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:32,144 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 358.0) internal successors, (6802), 19 states have internal predecessors, (6802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:32,144 INFO L175 Difference]: Start difference. First operand has 471 places, 448 transitions, 2535 flow. Second operand 18 states and 4632 transitions. [2022-11-16 12:06:32,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 570 transitions, 3726 flow [2022-11-16 12:06:32,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 570 transitions, 3557 flow, removed 27 selfloop flow, removed 39 redundant places. [2022-11-16 12:06:32,445 INFO L231 Difference]: Finished difference. Result has 452 places, 468 transitions, 2665 flow [2022-11-16 12:06:32,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2665, PETRI_PLACES=452, PETRI_TRANSITIONS=468} [2022-11-16 12:06:32,449 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 127 predicate places. [2022-11-16 12:06:32,449 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 468 transitions, 2665 flow [2022-11-16 12:06:32,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:32,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:32,451 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] [2022-11-16 12:06:32,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:32,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 12:06:32,657 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:06:32,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:32,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1376817985, now seen corresponding path program 1 times [2022-11-16 12:06:32,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:32,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242895983] [2022-11-16 12:06:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:32,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:33,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:33,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242895983] [2022-11-16 12:06:33,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242895983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:33,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637030721] [2022-11-16 12:06:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:33,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:33,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:33,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:33,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95449b8-5753-4e5a-84bd-53c3efbaccf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:06:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:33,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:06:33,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:34,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:36,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637030721] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:36,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:06:36,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19, 18] total 36 [2022-11-16 12:06:36,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853224123] [2022-11-16 12:06:36,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:36,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:06:36,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:06:36,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 12:06:36,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 358 [2022-11-16 12:06:36,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 468 transitions, 2665 flow. Second operand has 18 states, 18 states have (on average 246.11111111111111) internal successors, (4430), 18 states have internal predecessors, (4430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:36,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:36,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 358 [2022-11-16 12:06:36,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand