./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro --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 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 --- 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-8393723 [2022-11-18 20:58:19,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:58:19,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:58:19,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:58:19,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:58:19,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:58:19,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:58:19,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:58:19,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:58:19,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:58:19,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:58:19,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:58:19,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:58:19,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:58:19,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:58:19,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:58:19,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:58:19,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:58:19,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:58:19,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:58:19,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:58:19,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:58:19,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:58:19,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:58:19,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:58:19,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:58:19,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:58:19,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:58:19,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:58:19,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:58:19,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:58:19,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:58:19,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:58:19,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:58:19,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:58:19,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:58:19,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:58:19,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:58:19,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:58:19,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:58:19,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:58:19,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:58:19,129 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:58:19,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:58:19,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:58:19,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:58:19,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:58:19,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:58:19,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:58:19,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:58:19,135 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:58:19,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:58:19,136 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:58:19,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:58:19,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:58:19,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:58:19,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:58:19,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:58:19,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:58:19,138 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:58:19,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:58:19,138 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:58:19,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:58:19,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:58:19,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:58:19,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:58:19,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:58:19,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:58:19,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:58:19,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:58:19,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:58:19,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:58:19,141 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:58:19,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:58:19,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:58:19,142 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_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 [2022-11-18 20:58:19,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:58:19,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:58:19,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:58:19,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:58:19,493 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:58:19,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2022-11-18 20:58:19,586 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/data/b94e553ad/8aa73757d20e422cb06c35f159768c57/FLAGf2a3fc57d [2022-11-18 20:58:20,145 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:58:20,150 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2022-11-18 20:58:20,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/data/b94e553ad/8aa73757d20e422cb06c35f159768c57/FLAGf2a3fc57d [2022-11-18 20:58:20,494 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/data/b94e553ad/8aa73757d20e422cb06c35f159768c57 [2022-11-18 20:58:20,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:58:20,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:58:20,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:58:20,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:58:20,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:58:20,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:20,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c12bd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20, skipping insertion in model container [2022-11-18 20:58:20,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:20,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:58:20,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:58:20,762 WARN L234 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_3830227a-8152-4a3e-a917-85381bae0017/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-11-18 20:58:20,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:58:20,780 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:58:20,809 WARN L234 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_3830227a-8152-4a3e-a917-85381bae0017/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-11-18 20:58:20,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:58:20,828 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:58:20,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20 WrapperNode [2022-11-18 20:58:20,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:58:20,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:58:20,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:58:20,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:58:20,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:20,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:20,909 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 297 [2022-11-18 20:58:20,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:58:20,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:58:20,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:58:20,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:58:20,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:20,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:20,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:20,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:20,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:20,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:20,983 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:20,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:20,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:58:21,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:58:21,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:58:21,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:58:21,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20" (1/1) ... [2022-11-18 20:58:21,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:58:21,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:58:21,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:58:21,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:58:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:58:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:58:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:58:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:58:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:58:21,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:58:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:58:21,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:58:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:58:21,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:58:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 20:58:21,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 20:58:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:58:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:58:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:58:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:58:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:58:21,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:58:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:58:21,084 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:58:21,257 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:58:21,259 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:58:21,841 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:58:22,130 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:58:22,130 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 20:58:22,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:58:22 BoogieIcfgContainer [2022-11-18 20:58:22,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:58:22,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:58:22,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:58:22,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:58:22,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:58:20" (1/3) ... [2022-11-18 20:58:22,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e39b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:58:22, skipping insertion in model container [2022-11-18 20:58:22,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:20" (2/3) ... [2022-11-18 20:58:22,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e39b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:58:22, skipping insertion in model container [2022-11-18 20:58:22,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:58:22" (3/3) ... [2022-11-18 20:58:22,143 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2022-11-18 20:58:22,151 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:58:22,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:58:22,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:58:22,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:58:22,266 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:58:22,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 206 transitions, 444 flow [2022-11-18 20:58:22,430 INFO L130 PetriNetUnfolder]: 15/202 cut-off events. [2022-11-18 20:58:22,431 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:58:22,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 202 events. 15/202 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 116 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 162. Up to 2 conditions per place. [2022-11-18 20:58:22,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 206 transitions, 444 flow [2022-11-18 20:58:22,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 189 transitions, 402 flow [2022-11-18 20:58:22,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:58:22,485 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;@71c65142, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:58:22,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 20:58:22,533 INFO L130 PetriNetUnfolder]: 15/188 cut-off events. [2022-11-18 20:58:22,533 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:58:22,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:22,535 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] [2022-11-18 20:58:22,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:58:22,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:22,545 INFO L85 PathProgramCache]: Analyzing trace with hash -950136460, now seen corresponding path program 1 times [2022-11-18 20:58:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:22,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509136222] [2022-11-18 20:58:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:22,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:22,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:22,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509136222] [2022-11-18 20:58:22,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509136222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:22,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:22,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:58:22,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706550558] [2022-11-18 20:58:22,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:23,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:58:23,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:23,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:58:23,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:58:23,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 206 [2022-11-18 20:58:23,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 189 transitions, 402 flow. Second operand has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 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) [2022-11-18 20:58:23,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:23,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 206 [2022-11-18 20:58:23,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:23,306 INFO L130 PetriNetUnfolder]: 118/325 cut-off events. [2022-11-18 20:58:23,307 INFO L131 PetriNetUnfolder]: For 61/62 co-relation queries the response was YES. [2022-11-18 20:58:23,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 325 events. 118/325 cut-off events. For 61/62 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 587 event pairs, 51 based on Foata normal form. 72/379 useless extension candidates. Maximal degree in co-relation 351. Up to 163 conditions per place. [2022-11-18 20:58:23,315 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 16 selfloop transitions, 0 changer transitions 5/179 dead transitions. [2022-11-18 20:58:23,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 179 transitions, 414 flow [2022-11-18 20:58:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:58:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:58:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 384 transitions. [2022-11-18 20:58:23,342 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9320388349514563 [2022-11-18 20:58:23,343 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 384 transitions. [2022-11-18 20:58:23,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 384 transitions. [2022-11-18 20:58:23,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:23,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 384 transitions. [2022-11-18 20:58:23,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:23,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2022-11-18 20:58:23,371 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2022-11-18 20:58:23,373 INFO L175 Difference]: Start difference. First operand has 187 places, 189 transitions, 402 flow. Second operand 2 states and 384 transitions. [2022-11-18 20:58:23,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 179 transitions, 414 flow [2022-11-18 20:58:23,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 179 transitions, 398 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 20:58:23,386 INFO L231 Difference]: Finished difference. Result has 180 places, 174 transitions, 356 flow [2022-11-18 20:58:23,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=356, PETRI_PLACES=180, PETRI_TRANSITIONS=174} [2022-11-18 20:58:23,395 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, -7 predicate places. [2022-11-18 20:58:23,396 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 174 transitions, 356 flow [2022-11-18 20:58:23,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 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) [2022-11-18 20:58:23,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:23,397 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] [2022-11-18 20:58:23,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:58:23,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:58:23,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:23,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1956633989, now seen corresponding path program 1 times [2022-11-18 20:58:23,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:23,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010944094] [2022-11-18 20:58:23,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:23,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:24,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:24,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010944094] [2022-11-18 20:58:24,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010944094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:24,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:24,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:58:24,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882520372] [2022-11-18 20:58:24,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:24,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:58:24,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:24,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:58:24,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:58:24,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 206 [2022-11-18 20:58:24,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 174 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 148.57142857142858) internal successors, (1040), 7 states have internal predecessors, (1040), 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) [2022-11-18 20:58:24,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:24,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 206 [2022-11-18 20:58:24,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:24,834 INFO L130 PetriNetUnfolder]: 133/378 cut-off events. [2022-11-18 20:58:24,834 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-11-18 20:58:24,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 378 events. 133/378 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 818 event pairs, 8 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 615. Up to 205 conditions per place. [2022-11-18 20:58:24,843 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 50 selfloop transitions, 7 changer transitions 4/188 dead transitions. [2022-11-18 20:58:24,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 188 transitions, 513 flow [2022-11-18 20:58:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:58:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:58:24,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1063 transitions. [2022-11-18 20:58:24,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7371705963938974 [2022-11-18 20:58:24,849 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1063 transitions. [2022-11-18 20:58:24,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1063 transitions. [2022-11-18 20:58:24,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:24,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1063 transitions. [2022-11-18 20:58:24,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 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) [2022-11-18 20:58:24,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2022-11-18 20:58:24,860 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2022-11-18 20:58:24,860 INFO L175 Difference]: Start difference. First operand has 180 places, 174 transitions, 356 flow. Second operand 7 states and 1063 transitions. [2022-11-18 20:58:24,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 188 transitions, 513 flow [2022-11-18 20:58:24,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 188 transitions, 513 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:58:24,868 INFO L231 Difference]: Finished difference. Result has 184 places, 178 transitions, 397 flow [2022-11-18 20:58:24,868 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=184, PETRI_TRANSITIONS=178} [2022-11-18 20:58:24,869 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, -3 predicate places. [2022-11-18 20:58:24,869 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 178 transitions, 397 flow [2022-11-18 20:58:24,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.57142857142858) internal successors, (1040), 7 states have internal predecessors, (1040), 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) [2022-11-18 20:58:24,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:24,870 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] [2022-11-18 20:58:24,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:58:24,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:58:24,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:24,875 INFO L85 PathProgramCache]: Analyzing trace with hash -26284619, now seen corresponding path program 1 times [2022-11-18 20:58:24,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:24,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847858054] [2022-11-18 20:58:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:24,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:25,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:25,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847858054] [2022-11-18 20:58:25,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847858054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:25,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:25,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:58:25,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978823878] [2022-11-18 20:58:25,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:25,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:58:25,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:25,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:58:25,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:58:25,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 206 [2022-11-18 20:58:25,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 178 transitions, 397 flow. Second operand has 9 states, 9 states have (on average 139.11111111111111) internal successors, (1252), 9 states have internal predecessors, (1252), 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) [2022-11-18 20:58:25,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:25,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 206 [2022-11-18 20:58:25,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:26,220 INFO L130 PetriNetUnfolder]: 165/537 cut-off events. [2022-11-18 20:58:26,220 INFO L131 PetriNetUnfolder]: For 99/100 co-relation queries the response was YES. [2022-11-18 20:58:26,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 537 events. 165/537 cut-off events. For 99/100 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1689 event pairs, 44 based on Foata normal form. 24/529 useless extension candidates. Maximal degree in co-relation 996. Up to 209 conditions per place. [2022-11-18 20:58:26,226 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 79 selfloop transitions, 8 changer transitions 0/205 dead transitions. [2022-11-18 20:58:26,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 205 transitions, 656 flow [2022-11-18 20:58:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:58:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:58:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1289 transitions. [2022-11-18 20:58:26,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6952535059331176 [2022-11-18 20:58:26,231 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1289 transitions. [2022-11-18 20:58:26,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1289 transitions. [2022-11-18 20:58:26,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:26,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1289 transitions. [2022-11-18 20:58:26,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.22222222222223) internal successors, (1289), 9 states have internal predecessors, (1289), 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) [2022-11-18 20:58:26,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2022-11-18 20:58:26,241 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2022-11-18 20:58:26,241 INFO L175 Difference]: Start difference. First operand has 184 places, 178 transitions, 397 flow. Second operand 9 states and 1289 transitions. [2022-11-18 20:58:26,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 205 transitions, 656 flow [2022-11-18 20:58:26,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 205 transitions, 632 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-18 20:58:26,247 INFO L231 Difference]: Finished difference. Result has 190 places, 183 transitions, 440 flow [2022-11-18 20:58:26,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=440, PETRI_PLACES=190, PETRI_TRANSITIONS=183} [2022-11-18 20:58:26,249 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, 3 predicate places. [2022-11-18 20:58:26,249 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 183 transitions, 440 flow [2022-11-18 20:58:26,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 139.11111111111111) internal successors, (1252), 9 states have internal predecessors, (1252), 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) [2022-11-18 20:58:26,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:26,251 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] [2022-11-18 20:58:26,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:58:26,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:58:26,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:26,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2088954895, now seen corresponding path program 1 times [2022-11-18 20:58:26,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:26,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41401755] [2022-11-18 20:58:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:26,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:26,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:26,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41401755] [2022-11-18 20:58:26,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41401755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:26,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:26,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:58:26,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390874002] [2022-11-18 20:58:26,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:26,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:58:26,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:26,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:58:26,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:58:26,683 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 206 [2022-11-18 20:58:26,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 183 transitions, 440 flow. Second operand has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 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) [2022-11-18 20:58:26,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:26,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 206 [2022-11-18 20:58:26,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:27,162 INFO L130 PetriNetUnfolder]: 378/1009 cut-off events. [2022-11-18 20:58:27,162 INFO L131 PetriNetUnfolder]: For 330/332 co-relation queries the response was YES. [2022-11-18 20:58:27,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1976 conditions, 1009 events. 378/1009 cut-off events. For 330/332 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4480 event pairs, 50 based on Foata normal form. 2/959 useless extension candidates. Maximal degree in co-relation 1966. Up to 231 conditions per place. [2022-11-18 20:58:27,174 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 57 selfloop transitions, 16 changer transitions 10/218 dead transitions. [2022-11-18 20:58:27,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 218 transitions, 714 flow [2022-11-18 20:58:27,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:58:27,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:58:27,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1276 transitions. [2022-11-18 20:58:27,179 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7742718446601942 [2022-11-18 20:58:27,180 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1276 transitions. [2022-11-18 20:58:27,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1276 transitions. [2022-11-18 20:58:27,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:27,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1276 transitions. [2022-11-18 20:58:27,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 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) [2022-11-18 20:58:27,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2022-11-18 20:58:27,191 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2022-11-18 20:58:27,191 INFO L175 Difference]: Start difference. First operand has 190 places, 183 transitions, 440 flow. Second operand 8 states and 1276 transitions. [2022-11-18 20:58:27,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 218 transitions, 714 flow [2022-11-18 20:58:27,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 218 transitions, 708 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:58:27,200 INFO L231 Difference]: Finished difference. Result has 201 places, 188 transitions, 532 flow [2022-11-18 20:58:27,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=201, PETRI_TRANSITIONS=188} [2022-11-18 20:58:27,201 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, 14 predicate places. [2022-11-18 20:58:27,201 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 188 transitions, 532 flow [2022-11-18 20:58:27,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 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) [2022-11-18 20:58:27,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:27,203 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] [2022-11-18 20:58:27,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:58:27,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:58:27,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:27,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1219192610, now seen corresponding path program 1 times [2022-11-18 20:58:27,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:27,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260433827] [2022-11-18 20:58:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:27,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:27,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:27,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260433827] [2022-11-18 20:58:27,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260433827] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:58:27,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244299819] [2022-11-18 20:58:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:27,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:58:27,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:58:27,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:58:27,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:58:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:28,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:58:28,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:58:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:29,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:58:29,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:58:29,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244299819] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:58:29,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:58:29,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 8] total 24 [2022-11-18 20:58:29,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718447112] [2022-11-18 20:58:29,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:58:29,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:58:29,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:29,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:58:29,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:58:29,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 206 [2022-11-18 20:58:29,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 188 transitions, 532 flow. Second operand has 24 states, 24 states have (on average 137.58333333333334) internal successors, (3302), 24 states have internal predecessors, (3302), 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) [2022-11-18 20:58:29,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:29,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 206 [2022-11-18 20:58:29,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:30,809 INFO L130 PetriNetUnfolder]: 379/1147 cut-off events. [2022-11-18 20:58:30,809 INFO L131 PetriNetUnfolder]: For 1236/1236 co-relation queries the response was YES. [2022-11-18 20:58:30,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2516 conditions, 1147 events. 379/1147 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5819 event pairs, 38 based on Foata normal form. 17/1086 useless extension candidates. Maximal degree in co-relation 2500. Up to 479 conditions per place. [2022-11-18 20:58:30,819 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 69 selfloop transitions, 24 changer transitions 20/230 dead transitions. [2022-11-18 20:58:30,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 230 transitions, 916 flow [2022-11-18 20:58:30,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:58:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 20:58:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2636 transitions. [2022-11-18 20:58:30,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6734798160449668 [2022-11-18 20:58:30,828 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2636 transitions. [2022-11-18 20:58:30,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2636 transitions. [2022-11-18 20:58:30,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:30,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2636 transitions. [2022-11-18 20:58:30,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 138.73684210526315) internal successors, (2636), 19 states have internal predecessors, (2636), 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) [2022-11-18 20:58:30,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 206.0) internal successors, (4120), 20 states have internal predecessors, (4120), 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) [2022-11-18 20:58:30,848 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 206.0) internal successors, (4120), 20 states have internal predecessors, (4120), 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) [2022-11-18 20:58:30,849 INFO L175 Difference]: Start difference. First operand has 201 places, 188 transitions, 532 flow. Second operand 19 states and 2636 transitions. [2022-11-18 20:58:30,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 230 transitions, 916 flow [2022-11-18 20:58:30,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 230 transitions, 880 flow, removed 18 selfloop flow, removed 6 redundant places. [2022-11-18 20:58:30,860 INFO L231 Difference]: Finished difference. Result has 211 places, 193 transitions, 596 flow [2022-11-18 20:58:30,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=596, PETRI_PLACES=211, PETRI_TRANSITIONS=193} [2022-11-18 20:58:30,862 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, 24 predicate places. [2022-11-18 20:58:30,862 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 193 transitions, 596 flow [2022-11-18 20:58:30,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 137.58333333333334) internal successors, (3302), 24 states have internal predecessors, (3302), 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) [2022-11-18 20:58:30,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:30,864 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:30,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:58:31,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:58:31,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:58:31,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:31,072 INFO L85 PathProgramCache]: Analyzing trace with hash -925698855, now seen corresponding path program 1 times [2022-11-18 20:58:31,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:31,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355037776] [2022-11-18 20:58:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:31,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:58:32,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:32,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355037776] [2022-11-18 20:58:32,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355037776] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:58:32,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413894849] [2022-11-18 20:58:32,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:32,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:58:32,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:58:32,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:58:33,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:58:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:33,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-18 20:58:33,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:58:33,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:58:33,283 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:58:33,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-18 20:58:33,361 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:58:33,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 20:58:34,099 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:58:34,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:58:35,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:58:35,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:58:35,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:58:36,213 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 20:58:36,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 14 [2022-11-18 20:58:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:36,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:58:38,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 160 [2022-11-18 20:58:38,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 132 [2022-11-18 20:58:38,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 118 [2022-11-18 20:58:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:40,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413894849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:58:40,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:58:40,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 30, 29] total 70 [2022-11-18 20:58:40,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783486475] [2022-11-18 20:58:40,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:58:40,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-18 20:58:40,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:40,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-18 20:58:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=4431, Unknown=3, NotChecked=0, Total=4830 [2022-11-18 20:58:40,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 206 [2022-11-18 20:58:40,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 193 transitions, 596 flow. Second operand has 70 states, 70 states have (on average 99.2) internal successors, (6944), 70 states have internal predecessors, (6944), 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) [2022-11-18 20:58:40,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:40,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 206 [2022-11-18 20:58:40,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:01,116 INFO L130 PetriNetUnfolder]: 4272/9088 cut-off events. [2022-11-18 20:59:01,117 INFO L131 PetriNetUnfolder]: For 10402/10403 co-relation queries the response was YES. [2022-11-18 20:59:01,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22171 conditions, 9088 events. 4272/9088 cut-off events. For 10402/10403 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 71830 event pairs, 144 based on Foata normal form. 97/8717 useless extension candidates. Maximal degree in co-relation 22156. Up to 2393 conditions per place. [2022-11-18 20:59:01,227 INFO L137 encePairwiseOnDemand]: 172/206 looper letters, 382 selfloop transitions, 307 changer transitions 68/843 dead transitions. [2022-11-18 20:59:01,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 843 transitions, 4901 flow [2022-11-18 20:59:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-18 20:59:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2022-11-18 20:59:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 9023 transitions. [2022-11-18 20:59:01,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5034594353308782 [2022-11-18 20:59:01,258 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 9023 transitions. [2022-11-18 20:59:01,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 9023 transitions. [2022-11-18 20:59:01,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:01,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 9023 transitions. [2022-11-18 20:59:01,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 103.71264367816092) internal successors, (9023), 87 states have internal predecessors, (9023), 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) [2022-11-18 20:59:01,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 206.0) internal successors, (18128), 88 states have internal predecessors, (18128), 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) [2022-11-18 20:59:01,371 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 206.0) internal successors, (18128), 88 states have internal predecessors, (18128), 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) [2022-11-18 20:59:01,372 INFO L175 Difference]: Start difference. First operand has 211 places, 193 transitions, 596 flow. Second operand 87 states and 9023 transitions. [2022-11-18 20:59:01,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 843 transitions, 4901 flow [2022-11-18 20:59:01,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 843 transitions, 4769 flow, removed 29 selfloop flow, removed 7 redundant places. [2022-11-18 20:59:01,410 INFO L231 Difference]: Finished difference. Result has 299 places, 517 transitions, 3212 flow [2022-11-18 20:59:01,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=3212, PETRI_PLACES=299, PETRI_TRANSITIONS=517} [2022-11-18 20:59:01,414 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, 112 predicate places. [2022-11-18 20:59:01,415 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 517 transitions, 3212 flow [2022-11-18 20:59:01,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 99.2) internal successors, (6944), 70 states have internal predecessors, (6944), 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) [2022-11-18 20:59:01,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:01,419 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:01,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:01,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:01,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:59:01,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:01,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1982103887, now seen corresponding path program 2 times [2022-11-18 20:59:01,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:01,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463900508] [2022-11-18 20:59:01,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:01,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:04,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:04,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463900508] [2022-11-18 20:59:04,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463900508] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:04,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19260796] [2022-11-18 20:59:04,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:59:04,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:04,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:04,616 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:04,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:59:04,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:59:04,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:59:04,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-18 20:59:04,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:04,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:59:05,764 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:59:05,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:59:06,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:59:07,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:59:07,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:59:07,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:59:08,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:59:08,604 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 20:59:08,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 20:59:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:08,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:59:11,898 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:11,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 53 [2022-11-18 20:59:11,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2882 treesize of output 2706 [2022-11-18 20:59:12,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2602 treesize of output 2362 [2022-11-18 20:59:12,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2362 treesize of output 2230 [2022-11-18 20:59:12,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2230 treesize of output 1846 [2022-11-18 20:59:12,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1846 treesize of output 1462 [2022-11-18 21:02:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:43,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19260796] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:43,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:02:43,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 32, 30] total 80 [2022-11-18 21:02:43,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041160236] [2022-11-18 21:02:43,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:43,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-18 21:02:43,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:43,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-18 21:02:43,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=5779, Unknown=33, NotChecked=0, Total=6320 [2022-11-18 21:02:43,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 206 [2022-11-18 21:02:43,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 517 transitions, 3212 flow. Second operand has 80 states, 80 states have (on average 96.85) internal successors, (7748), 80 states have internal predecessors, (7748), 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) [2022-11-18 21:02:43,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:43,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 206 [2022-11-18 21:02:43,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:06,957 INFO L130 PetriNetUnfolder]: 6793/14215 cut-off events. [2022-11-18 21:03:06,957 INFO L131 PetriNetUnfolder]: For 33124/33382 co-relation queries the response was YES. [2022-11-18 21:03:07,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44576 conditions, 14215 events. 6793/14215 cut-off events. For 33124/33382 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 121566 event pairs, 609 based on Foata normal form. 264/13731 useless extension candidates. Maximal degree in co-relation 44546. Up to 4111 conditions per place. [2022-11-18 21:03:07,120 INFO L137 encePairwiseOnDemand]: 168/206 looper letters, 692 selfloop transitions, 382 changer transitions 34/1194 dead transitions. [2022-11-18 21:03:07,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 1194 transitions, 9140 flow [2022-11-18 21:03:07,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-18 21:03:07,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-11-18 21:03:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 7746 transitions. [2022-11-18 21:03:07,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49476239141543177 [2022-11-18 21:03:07,133 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 7746 transitions. [2022-11-18 21:03:07,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 7746 transitions. [2022-11-18 21:03:07,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:07,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 7746 transitions. [2022-11-18 21:03:07,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 101.92105263157895) internal successors, (7746), 76 states have internal predecessors, (7746), 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) [2022-11-18 21:03:07,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 206.0) internal successors, (15862), 77 states have internal predecessors, (15862), 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) [2022-11-18 21:03:07,183 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 206.0) internal successors, (15862), 77 states have internal predecessors, (15862), 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) [2022-11-18 21:03:07,184 INFO L175 Difference]: Start difference. First operand has 299 places, 517 transitions, 3212 flow. Second operand 76 states and 7746 transitions. [2022-11-18 21:03:07,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 1194 transitions, 9140 flow [2022-11-18 21:03:07,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1194 transitions, 8423 flow, removed 325 selfloop flow, removed 16 redundant places. [2022-11-18 21:03:07,344 INFO L231 Difference]: Finished difference. Result has 381 places, 849 transitions, 6392 flow [2022-11-18 21:03:07,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=6392, PETRI_PLACES=381, PETRI_TRANSITIONS=849} [2022-11-18 21:03:07,346 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, 194 predicate places. [2022-11-18 21:03:07,346 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 849 transitions, 6392 flow [2022-11-18 21:03:07,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 96.85) internal successors, (7748), 80 states have internal predecessors, (7748), 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) [2022-11-18 21:03:07,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:07,349 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:07,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:07,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 21:03:07,556 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 21:03:07,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:07,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1285884631, now seen corresponding path program 1 times [2022-11-18 21:03:07,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:07,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484253606] [2022-11-18 21:03:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:07,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:10,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:10,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484253606] [2022-11-18 21:03:10,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484253606] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:10,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354434743] [2022-11-18 21:03:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:10,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:10,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:10,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:10,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:03:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:10,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 21:03:10,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:11,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:11,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 21:03:11,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:11,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 21:03:11,770 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:03:11,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-18 21:03:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:03:12,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:12,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 75 [2022-11-18 21:03:12,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-18 21:03:12,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 54 [2022-11-18 21:03:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:03:13,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354434743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:13,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:03:13,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 20] total 60 [2022-11-18 21:03:13,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734282472] [2022-11-18 21:03:13,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:13,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-18 21:03:13,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:13,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-18 21:03:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3307, Unknown=5, NotChecked=0, Total=3540 [2022-11-18 21:03:13,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 206 [2022-11-18 21:03:13,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 849 transitions, 6392 flow. Second operand has 60 states, 60 states have (on average 104.41666666666667) internal successors, (6265), 60 states have internal predecessors, (6265), 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) [2022-11-18 21:03:13,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:13,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 206 [2022-11-18 21:03:13,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:31,610 INFO L130 PetriNetUnfolder]: 8120/17291 cut-off events. [2022-11-18 21:03:31,610 INFO L131 PetriNetUnfolder]: For 50755/51307 co-relation queries the response was YES. [2022-11-18 21:03:31,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59751 conditions, 17291 events. 8120/17291 cut-off events. For 50755/51307 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 156107 event pairs, 379 based on Foata normal form. 454/16814 useless extension candidates. Maximal degree in co-relation 59687. Up to 5906 conditions per place. [2022-11-18 21:03:31,866 INFO L137 encePairwiseOnDemand]: 170/206 looper letters, 630 selfloop transitions, 658 changer transitions 41/1418 dead transitions. [2022-11-18 21:03:31,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 1418 transitions, 12782 flow [2022-11-18 21:03:31,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-18 21:03:31,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-11-18 21:03:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 7221 transitions. [2022-11-18 21:03:31,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5311120917917035 [2022-11-18 21:03:31,877 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 7221 transitions. [2022-11-18 21:03:31,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 7221 transitions. [2022-11-18 21:03:31,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:31,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 7221 transitions. [2022-11-18 21:03:31,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 109.4090909090909) internal successors, (7221), 66 states have internal predecessors, (7221), 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) [2022-11-18 21:03:31,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 206.0) internal successors, (13802), 67 states have internal predecessors, (13802), 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) [2022-11-18 21:03:31,917 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 206.0) internal successors, (13802), 67 states have internal predecessors, (13802), 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) [2022-11-18 21:03:31,917 INFO L175 Difference]: Start difference. First operand has 381 places, 849 transitions, 6392 flow. Second operand 66 states and 7221 transitions. [2022-11-18 21:03:31,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 1418 transitions, 12782 flow [2022-11-18 21:03:32,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 1418 transitions, 12220 flow, removed 229 selfloop flow, removed 38 redundant places. [2022-11-18 21:03:32,338 INFO L231 Difference]: Finished difference. Result has 416 places, 1187 transitions, 10886 flow [2022-11-18 21:03:32,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=5412, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=10886, PETRI_PLACES=416, PETRI_TRANSITIONS=1187} [2022-11-18 21:03:32,339 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, 229 predicate places. [2022-11-18 21:03:32,340 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 1187 transitions, 10886 flow [2022-11-18 21:03:32,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 104.41666666666667) internal successors, (6265), 60 states have internal predecessors, (6265), 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) [2022-11-18 21:03:32,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:32,343 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:32,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:32,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:32,549 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 21:03:32,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash -100493441, now seen corresponding path program 2 times [2022-11-18 21:03:32,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:32,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097307815] [2022-11-18 21:03:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:32,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:37,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:37,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097307815] [2022-11-18 21:03:37,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097307815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:37,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552772337] [2022-11-18 21:03:37,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:03:37,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:37,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:37,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:37,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3830227a-8152-4a3e-a917-85381bae0017/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:03:37,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:03:37,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:03:37,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-18 21:03:37,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:38,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:03:39,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 21:03:40,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:40,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 21:03:40,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:40,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 21:03:40,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:40,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 21:03:40,587 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:03:40,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 14 [2022-11-18 21:03:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:40,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:42,433 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_306 (Array Int Int)) (v_ArrVal_305 (Array Int Int)) (v_ArrVal_308 (Array Int Int)) (v_ArrVal_307 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_305)) (.cse1 (+ c_~x~0.offset 4))) (= (select (select .cse0 c_~x~0.base) .cse1) (select (select (store (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_306) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_307) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_308) c_~x~0.base) .cse1)))) is different from false [2022-11-18 21:03:44,775 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_306 (Array Int Int)) (v_ArrVal_305 (Array Int Int)) (v_ArrVal_308 (Array Int Int)) (v_ArrVal_307 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_305)) (.cse1 (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 4))) (= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse1) (select (select (store (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_306) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_307) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_308) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse1)))) is different from false [2022-11-18 21:03:45,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:03:45,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 43 [2022-11-18 21:03:45,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10870 treesize of output 9334 [2022-11-18 21:03:46,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9206 treesize of output 8182 [2022-11-18 21:03:46,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8182 treesize of output 7158 [2022-11-18 21:03:46,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7158 treesize of output 6646 [2022-11-18 21:03:46,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6646 treesize of output 6390