./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R --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 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f --- 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-38b53e6 [2022-11-25 17:48:15,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:48:15,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:48:15,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:48:15,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:48:15,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:48:15,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:48:15,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:48:15,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:48:15,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:48:15,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:48:15,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:48:15,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:48:15,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:48:15,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:48:15,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:48:15,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:48:15,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:48:15,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:48:15,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:48:15,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:48:15,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:48:15,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:48:15,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:48:15,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:48:15,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:48:15,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:48:15,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:48:15,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:48:15,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:48:15,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:48:15,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:48:15,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:48:15,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:48:15,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:48:15,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:48:15,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:48:15,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:48:15,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:48:15,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:48:15,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:48:15,338 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:48:15,388 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:48:15,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:48:15,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:48:15,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:48:15,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:48:15,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:48:15,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:48:15,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:48:15,393 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:48:15,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:48:15,395 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:48:15,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:48:15,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:48:15,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:48:15,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:48:15,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:48:15,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:48:15,397 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:48:15,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:48:15,397 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:48:15,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:48:15,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:48:15,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:48:15,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:48:15,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:48:15,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:48:15,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:48:15,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:48:15,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:48:15,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:48:15,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:48:15,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:48:15,402 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:48:15,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:48:15,402 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f [2022-11-25 17:48:15,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:48:15,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:48:15,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:48:15,821 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:48:15,822 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:48:15,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-11-25 17:48:18,861 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:48:19,233 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:48:19,234 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-11-25 17:48:19,246 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/data/166d34ce3/766f8e7005504affb4d6293230c05bd7/FLAGf9e84f3d1 [2022-11-25 17:48:19,268 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/data/166d34ce3/766f8e7005504affb4d6293230c05bd7 [2022-11-25 17:48:19,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:48:19,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:48:19,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:48:19,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:48:19,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:48:19,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df22449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19, skipping insertion in model container [2022-11-25 17:48:19,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:48:19,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:48:19,618 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-11-25 17:48:19,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:48:19,669 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:48:19,725 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-11-25 17:48:19,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:48:19,754 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:48:19,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19 WrapperNode [2022-11-25 17:48:19,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:48:19,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:48:19,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:48:19,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:48:19,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,850 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 271 [2022-11-25 17:48:19,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:48:19,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:48:19,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:48:19,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:48:19,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,929 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:48:19,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:48:19,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:48:19,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:48:19,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19" (1/1) ... [2022-11-25 17:48:19,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:48:19,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:48:19,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:48:20,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:48:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:48:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:48:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:48:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:48:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:48:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:48:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:48:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:48:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:48:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:48:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:48:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:48:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:48:20,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:48:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:48:20,050 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:48:20,195 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:48:20,197 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:48:20,923 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:48:20,938 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:48:20,938 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 17:48:20,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:48:20 BoogieIcfgContainer [2022-11-25 17:48:20,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:48:20,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:48:20,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:48:20,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:48:20,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:48:19" (1/3) ... [2022-11-25 17:48:20,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb8d023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:48:20, skipping insertion in model container [2022-11-25 17:48:20,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:19" (2/3) ... [2022-11-25 17:48:20,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb8d023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:48:20, skipping insertion in model container [2022-11-25 17:48:20,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:48:20" (3/3) ... [2022-11-25 17:48:20,972 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2022-11-25 17:48:20,987 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:48:21,001 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:48:21,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:48:21,002 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:48:21,156 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:48:21,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 368 transitions, 760 flow [2022-11-25 17:48:21,563 INFO L130 PetriNetUnfolder]: 29/365 cut-off events. [2022-11-25 17:48:21,564 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:48:21,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 365 events. 29/365 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 516 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2022-11-25 17:48:21,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 368 transitions, 760 flow [2022-11-25 17:48:21,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 335 places, 354 transitions, 726 flow [2022-11-25 17:48:21,599 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:48:21,629 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 335 places, 354 transitions, 726 flow [2022-11-25 17:48:21,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 335 places, 354 transitions, 726 flow [2022-11-25 17:48:21,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 354 transitions, 726 flow [2022-11-25 17:48:21,760 INFO L130 PetriNetUnfolder]: 29/354 cut-off events. [2022-11-25 17:48:21,761 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:48:21,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 354 events. 29/354 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 503 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2022-11-25 17:48:21,781 INFO L119 LiptonReduction]: Number of co-enabled transitions 17502 [2022-11-25 17:48:36,240 INFO L134 LiptonReduction]: Checked pairs total: 15827 [2022-11-25 17:48:36,240 INFO L136 LiptonReduction]: Total number of compositions: 413 [2022-11-25 17:48:36,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:48:36,268 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;@2b8ba4d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:48:36,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 17:48:36,278 INFO L130 PetriNetUnfolder]: 6/27 cut-off events. [2022-11-25 17:48:36,278 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:48:36,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:48:36,279 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] [2022-11-25 17:48:36,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:48:36,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:36,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2033492233, now seen corresponding path program 1 times [2022-11-25 17:48:36,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:36,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229355045] [2022-11-25 17:48:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:36,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:48:37,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:37,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229355045] [2022-11-25 17:48:37,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229355045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:48:37,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:48:37,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:48:37,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111454604] [2022-11-25 17:48:37,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:37,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:48:37,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:37,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:48:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:48:37,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 781 [2022-11-25 17:48:37,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 341.3333333333333) internal successors, (1024), 3 states have internal predecessors, (1024), 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) [2022-11-25 17:48:37,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:48:37,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 781 [2022-11-25 17:48:37,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:48:37,679 INFO L130 PetriNetUnfolder]: 362/512 cut-off events. [2022-11-25 17:48:37,679 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-25 17:48:37,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 512 events. 362/512 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1623 event pairs, 39 based on Foata normal form. 1/308 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2022-11-25 17:48:37,685 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 36 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2022-11-25 17:48:37,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 203 flow [2022-11-25 17:48:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:48:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:48:37,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1047 transitions. [2022-11-25 17:48:37,719 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4468629961587708 [2022-11-25 17:48:37,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1047 transitions. [2022-11-25 17:48:37,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1047 transitions. [2022-11-25 17:48:37,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:48:37,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1047 transitions. [2022-11-25 17:48:37,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 349.0) internal successors, (1047), 3 states have internal predecessors, (1047), 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) [2022-11-25 17:48:37,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 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) [2022-11-25 17:48:37,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 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) [2022-11-25 17:48:37,791 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 3 states and 1047 transitions. [2022-11-25 17:48:37,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 203 flow [2022-11-25 17:48:37,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 44 transitions, 181 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 17:48:37,802 INFO L231 Difference]: Finished difference. Result has 29 places, 31 transitions, 88 flow [2022-11-25 17:48:37,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=29, PETRI_TRANSITIONS=31} [2022-11-25 17:48:37,810 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2022-11-25 17:48:37,810 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 31 transitions, 88 flow [2022-11-25 17:48:37,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.3333333333333) internal successors, (1024), 3 states have internal predecessors, (1024), 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) [2022-11-25 17:48:37,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:48:37,812 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] [2022-11-25 17:48:37,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:48:37,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:48:37,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:37,818 INFO L85 PathProgramCache]: Analyzing trace with hash 344542356, now seen corresponding path program 1 times [2022-11-25 17:48:37,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:37,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822313719] [2022-11-25 17:48:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:37,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:48:38,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:38,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822313719] [2022-11-25 17:48:38,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822313719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:48:38,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:48:38,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:48:38,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089059093] [2022-11-25 17:48:38,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:38,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:48:38,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:38,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:48:38,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:48:38,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 781 [2022-11-25 17:48:38,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 325.2) internal successors, (1626), 5 states have internal predecessors, (1626), 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) [2022-11-25 17:48:38,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:48:38,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 781 [2022-11-25 17:48:38,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:48:38,742 INFO L130 PetriNetUnfolder]: 910/1369 cut-off events. [2022-11-25 17:48:38,742 INFO L131 PetriNetUnfolder]: For 380/380 co-relation queries the response was YES. [2022-11-25 17:48:38,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3326 conditions, 1369 events. 910/1369 cut-off events. For 380/380 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5965 event pairs, 375 based on Foata normal form. 68/1417 useless extension candidates. Maximal degree in co-relation 757. Up to 480 conditions per place. [2022-11-25 17:48:38,752 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 91 selfloop transitions, 14 changer transitions 0/107 dead transitions. [2022-11-25 17:48:38,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 107 transitions, 510 flow [2022-11-25 17:48:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:48:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:48:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2343 transitions. [2022-11-25 17:48:38,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2022-11-25 17:48:38,760 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2343 transitions. [2022-11-25 17:48:38,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2343 transitions. [2022-11-25 17:48:38,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:48:38,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2343 transitions. [2022-11-25 17:48:38,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 334.7142857142857) internal successors, (2343), 7 states have internal predecessors, (2343), 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) [2022-11-25 17:48:38,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 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) [2022-11-25 17:48:38,784 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 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) [2022-11-25 17:48:38,784 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 88 flow. Second operand 7 states and 2343 transitions. [2022-11-25 17:48:38,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 107 transitions, 510 flow [2022-11-25 17:48:38,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 107 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:48:38,789 INFO L231 Difference]: Finished difference. Result has 38 places, 43 transitions, 178 flow [2022-11-25 17:48:38,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=178, PETRI_PLACES=38, PETRI_TRANSITIONS=43} [2022-11-25 17:48:38,790 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2022-11-25 17:48:38,790 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 43 transitions, 178 flow [2022-11-25 17:48:38,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 325.2) internal successors, (1626), 5 states have internal predecessors, (1626), 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) [2022-11-25 17:48:38,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:48:38,792 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] [2022-11-25 17:48:38,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:48:38,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:48:38,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:38,794 INFO L85 PathProgramCache]: Analyzing trace with hash 572274383, now seen corresponding path program 1 times [2022-11-25 17:48:38,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:38,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300572172] [2022-11-25 17:48:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:38,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:48:38,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:38,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300572172] [2022-11-25 17:48:38,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300572172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:48:38,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:48:38,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:48:38,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85885111] [2022-11-25 17:48:38,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:38,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:48:38,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:38,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:48:38,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:48:39,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 781 [2022-11-25 17:48:39,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 43 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 325.2) internal successors, (1626), 5 states have internal predecessors, (1626), 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) [2022-11-25 17:48:39,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:48:39,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 781 [2022-11-25 17:48:39,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:48:39,512 INFO L130 PetriNetUnfolder]: 649/1026 cut-off events. [2022-11-25 17:48:39,512 INFO L131 PetriNetUnfolder]: For 686/747 co-relation queries the response was YES. [2022-11-25 17:48:39,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 1026 events. 649/1026 cut-off events. For 686/747 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4846 event pairs, 229 based on Foata normal form. 117/1135 useless extension candidates. Maximal degree in co-relation 1389. Up to 510 conditions per place. [2022-11-25 17:48:39,519 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 83 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2022-11-25 17:48:39,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 101 transitions, 536 flow [2022-11-25 17:48:39,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:48:39,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:48:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2339 transitions. [2022-11-25 17:48:39,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4278397658679349 [2022-11-25 17:48:39,526 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2339 transitions. [2022-11-25 17:48:39,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2339 transitions. [2022-11-25 17:48:39,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:48:39,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2339 transitions. [2022-11-25 17:48:39,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 334.14285714285717) internal successors, (2339), 7 states have internal predecessors, (2339), 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) [2022-11-25 17:48:39,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 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) [2022-11-25 17:48:39,547 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 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) [2022-11-25 17:48:39,548 INFO L175 Difference]: Start difference. First operand has 38 places, 43 transitions, 178 flow. Second operand 7 states and 2339 transitions. [2022-11-25 17:48:39,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 101 transitions, 536 flow [2022-11-25 17:48:39,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 101 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:48:39,554 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 222 flow [2022-11-25 17:48:39,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=222, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2022-11-25 17:48:39,555 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2022-11-25 17:48:39,555 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 222 flow [2022-11-25 17:48:39,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 325.2) internal successors, (1626), 5 states have internal predecessors, (1626), 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) [2022-11-25 17:48:39,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:48:39,557 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] [2022-11-25 17:48:39,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:48:39,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:48:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash -988567983, now seen corresponding path program 1 times [2022-11-25 17:48:39,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:39,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513841734] [2022-11-25 17:48:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:39,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:48:39,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:39,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513841734] [2022-11-25 17:48:39,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513841734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:48:39,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:48:39,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:48:39,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756638092] [2022-11-25 17:48:39,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:39,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:48:39,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:39,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:48:39,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:48:39,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 781 [2022-11-25 17:48:39,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 325.2) internal successors, (1626), 5 states have internal predecessors, (1626), 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) [2022-11-25 17:48:39,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:48:39,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 781 [2022-11-25 17:48:39,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:48:40,092 INFO L130 PetriNetUnfolder]: 483/768 cut-off events. [2022-11-25 17:48:40,096 INFO L131 PetriNetUnfolder]: For 957/1028 co-relation queries the response was YES. [2022-11-25 17:48:40,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 768 events. 483/768 cut-off events. For 957/1028 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3262 event pairs, 220 based on Foata normal form. 99/854 useless extension candidates. Maximal degree in co-relation 1546. Up to 521 conditions per place. [2022-11-25 17:48:40,101 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 26 selfloop transitions, 6 changer transitions 59/93 dead transitions. [2022-11-25 17:48:40,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 93 transitions, 520 flow [2022-11-25 17:48:40,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:48:40,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:48:40,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2333 transitions. [2022-11-25 17:48:40,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42674227181269436 [2022-11-25 17:48:40,109 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2333 transitions. [2022-11-25 17:48:40,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2333 transitions. [2022-11-25 17:48:40,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:48:40,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2333 transitions. [2022-11-25 17:48:40,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 333.2857142857143) internal successors, (2333), 7 states have internal predecessors, (2333), 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) [2022-11-25 17:48:40,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 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) [2022-11-25 17:48:40,135 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 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) [2022-11-25 17:48:40,135 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 222 flow. Second operand 7 states and 2333 transitions. [2022-11-25 17:48:40,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 93 transitions, 520 flow [2022-11-25 17:48:40,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 93 transitions, 503 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 17:48:40,143 INFO L231 Difference]: Finished difference. Result has 55 places, 34 transitions, 158 flow [2022-11-25 17:48:40,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=34} [2022-11-25 17:48:40,144 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 23 predicate places. [2022-11-25 17:48:40,145 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 34 transitions, 158 flow [2022-11-25 17:48:40,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 325.2) internal successors, (1626), 5 states have internal predecessors, (1626), 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) [2022-11-25 17:48:40,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:48:40,146 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] [2022-11-25 17:48:40,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:48:40,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:48:40,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:40,147 INFO L85 PathProgramCache]: Analyzing trace with hash 475661103, now seen corresponding path program 1 times [2022-11-25 17:48:40,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:40,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614715910] [2022-11-25 17:48:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:40,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:48:40,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:40,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614715910] [2022-11-25 17:48:40,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614715910] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:48:40,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890669783] [2022-11-25 17:48:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:40,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:48:40,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:48:40,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:48:40,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:48:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:40,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:48:40,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:48:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:48:40,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:48:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:48:40,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890669783] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:48:40,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:48:40,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-25 17:48:40,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105057497] [2022-11-25 17:48:40,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:40,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:48:40,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:40,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:48:40,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:48:40,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 781 [2022-11-25 17:48:40,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 34 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 318.8) internal successors, (1594), 5 states have internal predecessors, (1594), 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) [2022-11-25 17:48:40,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:48:40,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 781 [2022-11-25 17:48:40,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:48:40,967 INFO L130 PetriNetUnfolder]: 378/548 cut-off events. [2022-11-25 17:48:40,968 INFO L131 PetriNetUnfolder]: For 362/362 co-relation queries the response was YES. [2022-11-25 17:48:40,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 548 events. 378/548 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1913 event pairs, 114 based on Foata normal form. 42/588 useless extension candidates. Maximal degree in co-relation 1473. Up to 393 conditions per place. [2022-11-25 17:48:40,973 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 39 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2022-11-25 17:48:40,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 290 flow [2022-11-25 17:48:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:48:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:48:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1608 transitions. [2022-11-25 17:48:40,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4117797695262484 [2022-11-25 17:48:40,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1608 transitions. [2022-11-25 17:48:40,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1608 transitions. [2022-11-25 17:48:40,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:48:40,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1608 transitions. [2022-11-25 17:48:40,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 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) [2022-11-25 17:48:40,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 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) [2022-11-25 17:48:40,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 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) [2022-11-25 17:48:40,997 INFO L175 Difference]: Start difference. First operand has 55 places, 34 transitions, 158 flow. Second operand 5 states and 1608 transitions. [2022-11-25 17:48:40,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 290 flow [2022-11-25 17:48:40,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 244 flow, removed 17 selfloop flow, removed 11 redundant places. [2022-11-25 17:48:41,001 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 141 flow [2022-11-25 17:48:41,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2022-11-25 17:48:41,002 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2022-11-25 17:48:41,002 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 141 flow [2022-11-25 17:48:41,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 318.8) internal successors, (1594), 5 states have internal predecessors, (1594), 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) [2022-11-25 17:48:41,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:48:41,004 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] [2022-11-25 17:48:41,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:48:41,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:48:41,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:48:41,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:41,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1830695828, now seen corresponding path program 1 times [2022-11-25 17:48:41,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:41,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110724771] [2022-11-25 17:48:41,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:41,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:48:41,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:41,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110724771] [2022-11-25 17:48:41,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110724771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:48:41,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204499034] [2022-11-25 17:48:41,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:41,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:48:41,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:48:41,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:48:41,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:48:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:41,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:48:41,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:48:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:48:41,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:48:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:48:41,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204499034] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:48:41,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:48:41,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-25 17:48:41,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775382437] [2022-11-25 17:48:41,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:41,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:48:41,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:41,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:48:41,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:48:42,016 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 781 [2022-11-25 17:48:42,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 318.8) internal successors, (1594), 5 states have internal predecessors, (1594), 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) [2022-11-25 17:48:42,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:48:42,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 781 [2022-11-25 17:48:42,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:48:42,322 INFO L130 PetriNetUnfolder]: 297/441 cut-off events. [2022-11-25 17:48:42,322 INFO L131 PetriNetUnfolder]: For 260/319 co-relation queries the response was YES. [2022-11-25 17:48:42,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 441 events. 297/441 cut-off events. For 260/319 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1349 event pairs, 93 based on Foata normal form. 87/512 useless extension candidates. Maximal degree in co-relation 1215. Up to 337 conditions per place. [2022-11-25 17:48:42,326 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 41 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2022-11-25 17:48:42,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 283 flow [2022-11-25 17:48:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:48:42,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:48:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1608 transitions. [2022-11-25 17:48:42,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4117797695262484 [2022-11-25 17:48:42,334 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1608 transitions. [2022-11-25 17:48:42,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1608 transitions. [2022-11-25 17:48:42,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:48:42,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1608 transitions. [2022-11-25 17:48:42,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 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) [2022-11-25 17:48:42,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 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) [2022-11-25 17:48:42,351 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 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) [2022-11-25 17:48:42,351 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 141 flow. Second operand 5 states and 1608 transitions. [2022-11-25 17:48:42,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 283 flow [2022-11-25 17:48:42,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 254 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-25 17:48:42,353 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 139 flow [2022-11-25 17:48:42,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2022-11-25 17:48:42,356 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2022-11-25 17:48:42,357 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 139 flow [2022-11-25 17:48:42,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 318.8) internal successors, (1594), 5 states have internal predecessors, (1594), 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) [2022-11-25 17:48:42,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:48:42,368 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] [2022-11-25 17:48:42,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:48:42,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:48:42,585 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:48:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:42,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1413684703, now seen corresponding path program 1 times [2022-11-25 17:48:42,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:42,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622352167] [2022-11-25 17:48:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:42,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:48:42,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:42,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622352167] [2022-11-25 17:48:42,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622352167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:48:42,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247692923] [2022-11-25 17:48:42,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:42,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:48:42,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:48:42,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:48:42,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:48:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:43,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:48:43,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:48:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:48:43,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:48:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:48:43,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247692923] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:48:43,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:48:43,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-25 17:48:43,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593937106] [2022-11-25 17:48:43,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:43,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:48:43,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:43,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:48:43,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:48:43,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 781 [2022-11-25 17:48:43,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 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) [2022-11-25 17:48:43,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:48:43,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 781 [2022-11-25 17:48:43,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:48:43,563 INFO L130 PetriNetUnfolder]: 282/422 cut-off events. [2022-11-25 17:48:43,563 INFO L131 PetriNetUnfolder]: For 405/523 co-relation queries the response was YES. [2022-11-25 17:48:43,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273 conditions, 422 events. 282/422 cut-off events. For 405/523 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1275 event pairs, 114 based on Foata normal form. 144/560 useless extension candidates. Maximal degree in co-relation 1233. Up to 333 conditions per place. [2022-11-25 17:48:43,567 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 43 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2022-11-25 17:48:43,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 293 flow [2022-11-25 17:48:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:48:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:48:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1608 transitions. [2022-11-25 17:48:43,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4117797695262484 [2022-11-25 17:48:43,573 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1608 transitions. [2022-11-25 17:48:43,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1608 transitions. [2022-11-25 17:48:43,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:48:43,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1608 transitions. [2022-11-25 17:48:43,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 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) [2022-11-25 17:48:43,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 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) [2022-11-25 17:48:43,587 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 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) [2022-11-25 17:48:43,588 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 139 flow. Second operand 5 states and 1608 transitions. [2022-11-25 17:48:43,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 293 flow [2022-11-25 17:48:43,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 276 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-25 17:48:43,590 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 149 flow [2022-11-25 17:48:43,591 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2022-11-25 17:48:43,593 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2022-11-25 17:48:43,593 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 149 flow [2022-11-25 17:48:43,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 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) [2022-11-25 17:48:43,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:48:43,594 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] [2022-11-25 17:48:43,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:48:43,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 17:48:43,802 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:48:43,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:43,803 INFO L85 PathProgramCache]: Analyzing trace with hash -763077405, now seen corresponding path program 1 times [2022-11-25 17:48:43,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:43,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848266221] [2022-11-25 17:48:43,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:43,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:48:46,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:46,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848266221] [2022-11-25 17:48:46,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848266221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:48:46,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699543675] [2022-11-25 17:48:46,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:46,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:48:46,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:48:46,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:48:46,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:48:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:47,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-25 17:48:47,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:48:47,203 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 34 treesize of output 32 [2022-11-25 17:48:47,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 17:48:47,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:48:47,968 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 17:48:47,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-11-25 17:48:48,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:48:48,167 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 28 treesize of output 20 [2022-11-25 17:48:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:48:48,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:48:48,451 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~asum~0 c_~bsum~0))) (and (forall ((v_ArrVal_347 (Array Int Int))) (<= .cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse1 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))))) (forall ((v_ArrVal_347 (Array Int Int))) (<= (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse2 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) .cse0)))) is different from false [2022-11-25 17:48:48,521 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~asum~0 c_~bsum~0 (select (select |c_#memory_int| c_~B~0.base) (+ (* |c_thread2Thread1of1ForFork0_~i~1#1| 4) c_~B~0.offset))))) (and (forall ((v_ArrVal_347 (Array Int Int))) (<= .cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse1 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))))) (forall ((v_ArrVal_347 (Array Int Int))) (<= (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse2 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) .cse0)))) is different from false [2022-11-25 17:48:48,541 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~asum~0 c_~bsum~0 (select (select |c_#memory_int| c_~B~0.base) c_~B~0.offset)))) (and (forall ((v_ArrVal_347 (Array Int Int))) (<= .cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse1 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))))) (forall ((v_ArrVal_347 (Array Int Int))) (<= (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse2 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) .cse0)))) is different from false [2022-11-25 17:48:48,791 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:48:48,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2166 treesize of output 1498 [2022-11-25 17:48:48,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:48:48,837 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 1462 treesize of output 1374 [2022-11-25 17:48:48,882 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:48:48,883 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 1366 treesize of output 1246 [2022-11-25 17:48:54,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:48:54,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:48:54,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:48:54,841 INFO L321 Elim1Store]: treesize reduction 17, result has 54.1 percent of original size [2022-11-25 17:48:54,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 89 [2022-11-25 17:48:54,851 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 60 treesize of output 56 [2022-11-25 17:48:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-11-25 17:48:55,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699543675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:48:55,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:48:55,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 34 [2022-11-25 17:48:55,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571138192] [2022-11-25 17:48:55,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:48:55,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-25 17:48:55,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:55,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-25 17:48:55,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=931, Unknown=9, NotChecked=192, Total=1260 [2022-11-25 17:48:55,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 781 [2022-11-25 17:48:55,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 149 flow. Second operand has 36 states, 36 states have (on average 251.88888888888889) internal successors, (9068), 36 states have internal predecessors, (9068), 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) [2022-11-25 17:48:55,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:48:55,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 781 [2022-11-25 17:48:55,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:49:01,648 INFO L130 PetriNetUnfolder]: 955/1394 cut-off events. [2022-11-25 17:49:01,648 INFO L131 PetriNetUnfolder]: For 1233/1233 co-relation queries the response was YES. [2022-11-25 17:49:01,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4456 conditions, 1394 events. 955/1394 cut-off events. For 1233/1233 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5177 event pairs, 37 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 4415. Up to 842 conditions per place. [2022-11-25 17:49:01,661 INFO L137 encePairwiseOnDemand]: 761/781 looper letters, 104 selfloop transitions, 60 changer transitions 2/166 dead transitions. [2022-11-25 17:49:01,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 166 transitions, 962 flow [2022-11-25 17:49:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:49:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-25 17:49:01,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4415 transitions. [2022-11-25 17:49:01,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3325299389922422 [2022-11-25 17:49:01,680 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4415 transitions. [2022-11-25 17:49:01,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4415 transitions. [2022-11-25 17:49:01,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:49:01,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4415 transitions. [2022-11-25 17:49:01,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 259.70588235294116) internal successors, (4415), 17 states have internal predecessors, (4415), 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) [2022-11-25 17:49:01,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 781.0) internal successors, (14058), 18 states have internal predecessors, (14058), 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) [2022-11-25 17:49:01,732 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 781.0) internal successors, (14058), 18 states have internal predecessors, (14058), 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) [2022-11-25 17:49:01,732 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 149 flow. Second operand 17 states and 4415 transitions. [2022-11-25 17:49:01,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 166 transitions, 962 flow [2022-11-25 17:49:01,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 166 transitions, 919 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-11-25 17:49:01,742 INFO L231 Difference]: Finished difference. Result has 61 places, 88 transitions, 595 flow [2022-11-25 17:49:01,743 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=595, PETRI_PLACES=61, PETRI_TRANSITIONS=88} [2022-11-25 17:49:01,747 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2022-11-25 17:49:01,747 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 88 transitions, 595 flow [2022-11-25 17:49:01,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 251.88888888888889) internal successors, (9068), 36 states have internal predecessors, (9068), 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) [2022-11-25 17:49:01,751 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:49:01,751 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] [2022-11-25 17:49:01,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:49:01,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:01,959 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:49:01,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:49:01,960 INFO L85 PathProgramCache]: Analyzing trace with hash 452245037, now seen corresponding path program 2 times [2022-11-25 17:49:01,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:49:01,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384976721] [2022-11-25 17:49:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:49:01,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:49:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:49:05,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:49:05,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384976721] [2022-11-25 17:49:05,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384976721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:49:05,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651777251] [2022-11-25 17:49:05,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:49:05,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:05,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:49:05,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:49:05,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:49:05,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:49:05,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:49:05,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-25 17:49:05,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:49:06,323 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:49:06,323 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 35 treesize of output 23 [2022-11-25 17:49:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:49:06,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:49:06,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:49:06,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 103 [2022-11-25 17:49:06,977 INFO L321 Elim1Store]: treesize reduction 65, result has 30.1 percent of original size [2022-11-25 17:49:06,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 38 [2022-11-25 17:49:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:49:07,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651777251] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:49:07,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:49:07,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 6] total 23 [2022-11-25 17:49:07,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688325797] [2022-11-25 17:49:07,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:49:07,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 17:49:07,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:49:07,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 17:49:07,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2022-11-25 17:49:09,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:49:11,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:49:15,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:49:17,421 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 781 [2022-11-25 17:49:17,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 88 transitions, 595 flow. Second operand has 25 states, 25 states have (on average 298.6) internal successors, (7465), 25 states have internal predecessors, (7465), 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) [2022-11-25 17:49:17,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:49:17,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 781 [2022-11-25 17:49:17,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:49:19,212 INFO L130 PetriNetUnfolder]: 1074/1568 cut-off events. [2022-11-25 17:49:19,212 INFO L131 PetriNetUnfolder]: For 3771/3771 co-relation queries the response was YES. [2022-11-25 17:49:19,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7135 conditions, 1568 events. 1074/1568 cut-off events. For 3771/3771 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5870 event pairs, 211 based on Foata normal form. 1/1568 useless extension candidates. Maximal degree in co-relation 7081. Up to 1396 conditions per place. [2022-11-25 17:49:19,228 INFO L137 encePairwiseOnDemand]: 768/781 looper letters, 108 selfloop transitions, 34 changer transitions 1/143 dead transitions. [2022-11-25 17:49:19,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 143 transitions, 1235 flow [2022-11-25 17:49:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:49:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-25 17:49:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4232 transitions. [2022-11-25 17:49:19,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3870495701481617 [2022-11-25 17:49:19,241 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4232 transitions. [2022-11-25 17:49:19,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4232 transitions. [2022-11-25 17:49:19,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:49:19,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4232 transitions. [2022-11-25 17:49:19,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 302.2857142857143) internal successors, (4232), 14 states have internal predecessors, (4232), 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) [2022-11-25 17:49:19,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 781.0) internal successors, (11715), 15 states have internal predecessors, (11715), 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) [2022-11-25 17:49:19,275 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 781.0) internal successors, (11715), 15 states have internal predecessors, (11715), 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) [2022-11-25 17:49:19,275 INFO L175 Difference]: Start difference. First operand has 61 places, 88 transitions, 595 flow. Second operand 14 states and 4232 transitions. [2022-11-25 17:49:19,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 143 transitions, 1235 flow [2022-11-25 17:49:19,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 143 transitions, 1132 flow, removed 40 selfloop flow, removed 2 redundant places. [2022-11-25 17:49:19,288 INFO L231 Difference]: Finished difference. Result has 78 places, 111 transitions, 779 flow [2022-11-25 17:49:19,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=779, PETRI_PLACES=78, PETRI_TRANSITIONS=111} [2022-11-25 17:49:19,289 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2022-11-25 17:49:19,290 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 111 transitions, 779 flow [2022-11-25 17:49:19,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 298.6) internal successors, (7465), 25 states have internal predecessors, (7465), 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) [2022-11-25 17:49:19,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:49:19,292 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] [2022-11-25 17:49:19,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:49:19,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:19,499 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:49:19,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:49:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash -278483829, now seen corresponding path program 3 times [2022-11-25 17:49:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:49:19,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810075494] [2022-11-25 17:49:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:49:19,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:49:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:49:20,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:49:20,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810075494] [2022-11-25 17:49:20,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810075494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:49:20,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552238053] [2022-11-25 17:49:20,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:49:20,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:20,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:49:20,966 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:49:20,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:49:21,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 17:49:21,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:49:21,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-25 17:49:21,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:49:21,520 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:49:21,520 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 35 treesize of output 23 [2022-11-25 17:49:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:49:21,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:49:21,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:49:21,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 93 [2022-11-25 17:49:22,128 INFO L321 Elim1Store]: treesize reduction 59, result has 28.9 percent of original size [2022-11-25 17:49:22,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 34 [2022-11-25 17:49:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:49:22,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552238053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:49:22,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:49:22,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 14 [2022-11-25 17:49:22,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212537655] [2022-11-25 17:49:22,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:49:22,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 17:49:22,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:49:22,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 17:49:22,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:49:24,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2022-11-25 17:49:24,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 111 transitions, 779 flow. Second operand has 16 states, 16 states have (on average 312.0) internal successors, (4992), 16 states have internal predecessors, (4992), 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) [2022-11-25 17:49:24,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:49:24,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2022-11-25 17:49:24,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:49:25,807 INFO L130 PetriNetUnfolder]: 1241/1810 cut-off events. [2022-11-25 17:49:25,807 INFO L131 PetriNetUnfolder]: For 5090/5090 co-relation queries the response was YES. [2022-11-25 17:49:25,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8424 conditions, 1810 events. 1241/1810 cut-off events. For 5090/5090 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7017 event pairs, 260 based on Foata normal form. 1/1802 useless extension candidates. Maximal degree in co-relation 8362. Up to 1589 conditions per place. [2022-11-25 17:49:25,828 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 138 selfloop transitions, 45 changer transitions 1/184 dead transitions. [2022-11-25 17:49:25,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 184 transitions, 1624 flow [2022-11-25 17:49:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:49:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:49:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2872 transitions. [2022-11-25 17:49:25,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40859297197325367 [2022-11-25 17:49:25,840 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2872 transitions. [2022-11-25 17:49:25,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2872 transitions. [2022-11-25 17:49:25,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:49:25,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2872 transitions. [2022-11-25 17:49:25,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 319.1111111111111) internal successors, (2872), 9 states have internal predecessors, (2872), 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) [2022-11-25 17:49:25,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 781.0) internal successors, (7810), 10 states have internal predecessors, (7810), 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) [2022-11-25 17:49:25,860 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 781.0) internal successors, (7810), 10 states have internal predecessors, (7810), 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) [2022-11-25 17:49:25,860 INFO L175 Difference]: Start difference. First operand has 78 places, 111 transitions, 779 flow. Second operand 9 states and 2872 transitions. [2022-11-25 17:49:25,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 184 transitions, 1624 flow [2022-11-25 17:49:25,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 184 transitions, 1578 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-11-25 17:49:25,880 INFO L231 Difference]: Finished difference. Result has 87 places, 137 transitions, 1106 flow [2022-11-25 17:49:25,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1106, PETRI_PLACES=87, PETRI_TRANSITIONS=137} [2022-11-25 17:49:25,882 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 55 predicate places. [2022-11-25 17:49:25,882 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 137 transitions, 1106 flow [2022-11-25 17:49:25,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 312.0) internal successors, (4992), 16 states have internal predecessors, (4992), 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) [2022-11-25 17:49:25,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:49:25,885 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] [2022-11-25 17:49:25,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:49:26,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:26,094 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:49:26,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:49:26,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1205936907, now seen corresponding path program 4 times [2022-11-25 17:49:26,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:49:26,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770689276] [2022-11-25 17:49:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:49:26,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:49:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:49:28,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:49:28,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770689276] [2022-11-25 17:49:28,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770689276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:49:28,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590822343] [2022-11-25 17:49:28,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:49:28,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:28,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:49:28,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:49:28,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:49:28,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:49:28,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:49:28,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-25 17:49:28,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:49:29,014 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:49:29,015 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 35 treesize of output 23 [2022-11-25 17:49:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:49:29,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:49:29,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:49:29,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 93 [2022-11-25 17:49:29,788 INFO L321 Elim1Store]: treesize reduction 59, result has 28.9 percent of original size [2022-11-25 17:49:29,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 34 [2022-11-25 17:49:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:49:29,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590822343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:49:29,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:49:29,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 6] total 21 [2022-11-25 17:49:29,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211940130] [2022-11-25 17:49:29,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:49:29,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 17:49:29,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:49:29,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 17:49:29,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:49:33,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 781 [2022-11-25 17:49:33,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 137 transitions, 1106 flow. Second operand has 23 states, 23 states have (on average 298.5652173913044) internal successors, (6867), 23 states have internal predecessors, (6867), 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) [2022-11-25 17:49:33,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:49:33,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 781 [2022-11-25 17:49:33,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:49:35,202 INFO L130 PetriNetUnfolder]: 1398/2038 cut-off events. [2022-11-25 17:49:35,202 INFO L131 PetriNetUnfolder]: For 7226/7226 co-relation queries the response was YES. [2022-11-25 17:49:35,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10132 conditions, 2038 events. 1398/2038 cut-off events. For 7226/7226 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8048 event pairs, 327 based on Foata normal form. 1/2038 useless extension candidates. Maximal degree in co-relation 10069. Up to 1811 conditions per place. [2022-11-25 17:49:35,237 INFO L137 encePairwiseOnDemand]: 768/781 looper letters, 144 selfloop transitions, 59 changer transitions 1/204 dead transitions. [2022-11-25 17:49:35,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 204 transitions, 1993 flow [2022-11-25 17:49:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:49:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:49:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3642 transitions. [2022-11-25 17:49:35,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3886043533930858 [2022-11-25 17:49:35,248 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3642 transitions. [2022-11-25 17:49:35,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3642 transitions. [2022-11-25 17:49:35,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:49:35,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3642 transitions. [2022-11-25 17:49:35,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 303.5) internal successors, (3642), 12 states have internal predecessors, (3642), 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) [2022-11-25 17:49:35,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 781.0) internal successors, (10153), 13 states have internal predecessors, (10153), 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) [2022-11-25 17:49:35,276 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 781.0) internal successors, (10153), 13 states have internal predecessors, (10153), 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) [2022-11-25 17:49:35,276 INFO L175 Difference]: Start difference. First operand has 87 places, 137 transitions, 1106 flow. Second operand 12 states and 3642 transitions. [2022-11-25 17:49:35,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 204 transitions, 1993 flow [2022-11-25 17:49:35,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 204 transitions, 1898 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-11-25 17:49:35,323 INFO L231 Difference]: Finished difference. Result has 101 places, 162 transitions, 1469 flow [2022-11-25 17:49:35,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1469, PETRI_PLACES=101, PETRI_TRANSITIONS=162} [2022-11-25 17:49:35,324 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 69 predicate places. [2022-11-25 17:49:35,325 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 162 transitions, 1469 flow [2022-11-25 17:49:35,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 298.5652173913044) internal successors, (6867), 23 states have internal predecessors, (6867), 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) [2022-11-25 17:49:35,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:49:35,328 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] [2022-11-25 17:49:35,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:49:35,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:35,541 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:49:35,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:49:35,542 INFO L85 PathProgramCache]: Analyzing trace with hash -647044341, now seen corresponding path program 5 times [2022-11-25 17:49:35,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:49:35,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461653734] [2022-11-25 17:49:35,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:49:35,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:49:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:49:37,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:49:37,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461653734] [2022-11-25 17:49:37,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461653734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:49:37,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961742868] [2022-11-25 17:49:37,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:49:37,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:37,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:49:37,015 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:49:37,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:49:37,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:49:37,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:49:37,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-25 17:49:37,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:49:37,657 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:49:37,658 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 35 treesize of output 23 [2022-11-25 17:49:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:49:37,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:49:38,020 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:49:38,021 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 20 treesize of output 19 [2022-11-25 17:49:38,039 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:49:38,040 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 20 treesize of output 13 [2022-11-25 17:49:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:49:38,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961742868] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:49:38,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:49:38,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 15 [2022-11-25 17:49:38,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177204646] [2022-11-25 17:49:38,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:49:38,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 17:49:38,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:49:38,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 17:49:38,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:49:40,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2022-11-25 17:49:40,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 162 transitions, 1469 flow. Second operand has 17 states, 17 states have (on average 311.94117647058823) internal successors, (5303), 17 states have internal predecessors, (5303), 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) [2022-11-25 17:49:40,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:49:40,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2022-11-25 17:49:40,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:49:42,140 INFO L130 PetriNetUnfolder]: 1649/2404 cut-off events. [2022-11-25 17:49:42,141 INFO L131 PetriNetUnfolder]: For 10737/10737 co-relation queries the response was YES. [2022-11-25 17:49:42,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12705 conditions, 2404 events. 1649/2404 cut-off events. For 10737/10737 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9958 event pairs, 178 based on Foata normal form. 1/2404 useless extension candidates. Maximal degree in co-relation 12630. Up to 2024 conditions per place. [2022-11-25 17:49:42,179 INFO L137 encePairwiseOnDemand]: 771/781 looper letters, 167 selfloop transitions, 83 changer transitions 1/251 dead transitions. [2022-11-25 17:49:42,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 251 transitions, 2625 flow [2022-11-25 17:49:42,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:49:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:49:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2880 transitions. [2022-11-25 17:49:42,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40973111395646605 [2022-11-25 17:49:42,189 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2880 transitions. [2022-11-25 17:49:42,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2880 transitions. [2022-11-25 17:49:42,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:49:42,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2880 transitions. [2022-11-25 17:49:42,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 320.0) internal successors, (2880), 9 states have internal predecessors, (2880), 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) [2022-11-25 17:49:42,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 781.0) internal successors, (7810), 10 states have internal predecessors, (7810), 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) [2022-11-25 17:49:42,213 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 781.0) internal successors, (7810), 10 states have internal predecessors, (7810), 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) [2022-11-25 17:49:42,213 INFO L175 Difference]: Start difference. First operand has 101 places, 162 transitions, 1469 flow. Second operand 9 states and 2880 transitions. [2022-11-25 17:49:42,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 251 transitions, 2625 flow [2022-11-25 17:49:42,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 251 transitions, 2501 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-25 17:49:42,292 INFO L231 Difference]: Finished difference. Result has 110 places, 195 transitions, 1959 flow [2022-11-25 17:49:42,292 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1959, PETRI_PLACES=110, PETRI_TRANSITIONS=195} [2022-11-25 17:49:42,293 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 78 predicate places. [2022-11-25 17:49:42,293 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 195 transitions, 1959 flow [2022-11-25 17:49:42,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 311.94117647058823) internal successors, (5303), 17 states have internal predecessors, (5303), 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) [2022-11-25 17:49:42,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:49:42,295 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] [2022-11-25 17:49:42,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:49:42,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 17:49:42,509 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:49:42,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:49:42,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2099822111, now seen corresponding path program 6 times [2022-11-25 17:49:42,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:49:42,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321111437] [2022-11-25 17:49:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:49:42,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:49:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:49:44,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:49:44,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321111437] [2022-11-25 17:49:44,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321111437] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:49:44,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961704956] [2022-11-25 17:49:44,837 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:49:44,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:44,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:49:44,839 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:49:44,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:49:45,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-25 17:49:45,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:49:45,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-25 17:49:45,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:49:45,168 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 [2022-11-25 17:49:45,260 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 17:49:45,261 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 [2022-11-25 17:49:45,708 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-11-25 17:49:45,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2022-11-25 17:49:45,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:49:45,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 94 [2022-11-25 17:49:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:49:46,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:49:47,768 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:49:47,769 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 52 treesize of output 42 [2022-11-25 17:49:47,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:49:47,811 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:49:47,812 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 20 treesize of output 13 [2022-11-25 17:49:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:49:48,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961704956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:49:48,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:49:48,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 25 [2022-11-25 17:49:48,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013791508] [2022-11-25 17:49:48,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:49:48,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 17:49:48,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:49:48,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 17:49:48,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-11-25 17:49:53,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:49:55,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:50:04,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:50:06,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:50:11,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:50:13,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:50:14,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:50:19,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:50:21,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:50:24,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:50:26,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:50:26,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 781 [2022-11-25 17:50:26,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 195 transitions, 1959 flow. Second operand has 27 states, 27 states have (on average 285.3333333333333) internal successors, (7704), 27 states have internal predecessors, (7704), 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) [2022-11-25 17:50:26,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:50:26,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 781 [2022-11-25 17:50:26,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:50:28,086 INFO L130 PetriNetUnfolder]: 1737/2533 cut-off events. [2022-11-25 17:50:28,087 INFO L131 PetriNetUnfolder]: For 13894/13894 co-relation queries the response was YES. [2022-11-25 17:50:28,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14075 conditions, 2533 events. 1737/2533 cut-off events. For 13894/13894 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10641 event pairs, 206 based on Foata normal form. 1/2533 useless extension candidates. Maximal degree in co-relation 13998. Up to 2176 conditions per place. [2022-11-25 17:50:28,113 INFO L137 encePairwiseOnDemand]: 765/781 looper letters, 158 selfloop transitions, 90 changer transitions 1/249 dead transitions. [2022-11-25 17:50:28,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 249 transitions, 2859 flow [2022-11-25 17:50:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:50:28,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 17:50:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3781 transitions. [2022-11-25 17:50:28,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3724022456416823 [2022-11-25 17:50:28,124 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3781 transitions. [2022-11-25 17:50:28,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3781 transitions. [2022-11-25 17:50:28,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:50:28,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3781 transitions. [2022-11-25 17:50:28,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 290.84615384615387) internal successors, (3781), 13 states have internal predecessors, (3781), 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) [2022-11-25 17:50:28,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 781.0) internal successors, (10934), 14 states have internal predecessors, (10934), 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) [2022-11-25 17:50:28,150 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 781.0) internal successors, (10934), 14 states have internal predecessors, (10934), 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) [2022-11-25 17:50:28,151 INFO L175 Difference]: Start difference. First operand has 110 places, 195 transitions, 1959 flow. Second operand 13 states and 3781 transitions. [2022-11-25 17:50:28,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 249 transitions, 2859 flow [2022-11-25 17:50:28,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 249 transitions, 2697 flow, removed 65 selfloop flow, removed 2 redundant places. [2022-11-25 17:50:28,273 INFO L231 Difference]: Finished difference. Result has 124 places, 204 transitions, 2190 flow [2022-11-25 17:50:28,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2190, PETRI_PLACES=124, PETRI_TRANSITIONS=204} [2022-11-25 17:50:28,274 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 92 predicate places. [2022-11-25 17:50:28,275 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 204 transitions, 2190 flow [2022-11-25 17:50:28,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 285.3333333333333) internal successors, (7704), 27 states have internal predecessors, (7704), 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) [2022-11-25 17:50:28,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:50:28,277 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] [2022-11-25 17:50:28,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:50:28,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 17:50:28,491 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:50:28,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:50:28,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1159753391, now seen corresponding path program 7 times [2022-11-25 17:50:28,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:50:28,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121323072] [2022-11-25 17:50:28,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:50:28,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:50:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:50:29,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:50:29,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121323072] [2022-11-25 17:50:29,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121323072] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:50:29,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067011244] [2022-11-25 17:50:29,812 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:50:29,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:50:29,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:50:29,815 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:50:29,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:50:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:30,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-25 17:50:30,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:50:30,457 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:50:30,457 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 35 treesize of output 23 [2022-11-25 17:50:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:50:30,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:50:30,796 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:50:30,797 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 20 treesize of output 19 [2022-11-25 17:50:30,813 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:50:30,813 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 20 treesize of output 13 [2022-11-25 17:50:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:50:30,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067011244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:50:30,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:50:30,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 14 [2022-11-25 17:50:30,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226021045] [2022-11-25 17:50:30,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:50:30,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 17:50:30,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:50:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 17:50:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:50:32,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2022-11-25 17:50:32,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 204 transitions, 2190 flow. Second operand has 16 states, 16 states have (on average 312.1875) internal successors, (4995), 16 states have internal predecessors, (4995), 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) [2022-11-25 17:50:32,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:50:32,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2022-11-25 17:50:32,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:50:33,884 INFO L130 PetriNetUnfolder]: 1827/2666 cut-off events. [2022-11-25 17:50:33,884 INFO L131 PetriNetUnfolder]: For 15449/15449 co-relation queries the response was YES. [2022-11-25 17:50:33,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15298 conditions, 2666 events. 1827/2666 cut-off events. For 15449/15449 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11366 event pairs, 218 based on Foata normal form. 1/2667 useless extension candidates. Maximal degree in co-relation 15210. Up to 2305 conditions per place. [2022-11-25 17:50:33,916 INFO L137 encePairwiseOnDemand]: 771/781 looper letters, 172 selfloop transitions, 84 changer transitions 1/257 dead transitions. [2022-11-25 17:50:33,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 257 transitions, 3071 flow [2022-11-25 17:50:33,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:50:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:50:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2882 transitions. [2022-11-25 17:50:33,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41001564945226915 [2022-11-25 17:50:33,923 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2882 transitions. [2022-11-25 17:50:33,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2882 transitions. [2022-11-25 17:50:33,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:50:33,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2882 transitions. [2022-11-25 17:50:33,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 320.22222222222223) internal successors, (2882), 9 states have internal predecessors, (2882), 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) [2022-11-25 17:50:33,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 781.0) internal successors, (7810), 10 states have internal predecessors, (7810), 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) [2022-11-25 17:50:33,944 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 781.0) internal successors, (7810), 10 states have internal predecessors, (7810), 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) [2022-11-25 17:50:33,945 INFO L175 Difference]: Start difference. First operand has 124 places, 204 transitions, 2190 flow. Second operand 9 states and 2882 transitions. [2022-11-25 17:50:33,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 257 transitions, 3071 flow [2022-11-25 17:50:34,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 257 transitions, 2965 flow, removed 32 selfloop flow, removed 5 redundant places. [2022-11-25 17:50:34,066 INFO L231 Difference]: Finished difference. Result has 129 places, 210 transitions, 2365 flow [2022-11-25 17:50:34,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2365, PETRI_PLACES=129, PETRI_TRANSITIONS=210} [2022-11-25 17:50:34,068 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2022-11-25 17:50:34,068 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 210 transitions, 2365 flow [2022-11-25 17:50:34,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 312.1875) internal successors, (4995), 16 states have internal predecessors, (4995), 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) [2022-11-25 17:50:34,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:50:34,070 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] [2022-11-25 17:50:34,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:50:34,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 17:50:34,277 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:50:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:50:34,278 INFO L85 PathProgramCache]: Analyzing trace with hash 533742431, now seen corresponding path program 8 times [2022-11-25 17:50:34,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:50:34,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334440556] [2022-11-25 17:50:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:50:34,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:50:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:50:35,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:50:35,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334440556] [2022-11-25 17:50:35,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334440556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:50:35,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027484503] [2022-11-25 17:50:35,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:50:35,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:50:35,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:50:35,690 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:50:35,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:50:35,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:50:35,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:50:35,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-25 17:50:35,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:50:35,972 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 [2022-11-25 17:50:36,028 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 17:50:36,029 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 [2022-11-25 17:50:36,367 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-11-25 17:50:36,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2022-11-25 17:50:36,695 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:50:36,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 94 [2022-11-25 17:50:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:50:36,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:50:40,048 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:50:40,048 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 52 treesize of output 42 [2022-11-25 17:50:40,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:50:40,089 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:50:40,089 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 20 treesize of output 13 [2022-11-25 17:50:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:50:40,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027484503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:50:40,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:50:40,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 20 [2022-11-25 17:50:40,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827660204] [2022-11-25 17:50:40,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:50:40,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 17:50:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:50:40,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 17:50:40,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-11-25 17:50:47,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:50:49,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:50:53,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:51:01,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 781 [2022-11-25 17:51:01,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 210 transitions, 2365 flow. Second operand has 22 states, 22 states have (on average 297.40909090909093) internal successors, (6543), 22 states have internal predecessors, (6543), 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) [2022-11-25 17:51:01,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:51:01,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 781 [2022-11-25 17:51:01,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:51:02,975 INFO L130 PetriNetUnfolder]: 1971/2875 cut-off events. [2022-11-25 17:51:02,975 INFO L131 PetriNetUnfolder]: For 19183/19183 co-relation queries the response was YES. [2022-11-25 17:51:02,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16917 conditions, 2875 events. 1971/2875 cut-off events. For 19183/19183 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12451 event pairs, 220 based on Foata normal form. 1/2876 useless extension candidates. Maximal degree in co-relation 16831. Up to 2429 conditions per place. [2022-11-25 17:51:03,004 INFO L137 encePairwiseOnDemand]: 768/781 looper letters, 177 selfloop transitions, 91 changer transitions 1/269 dead transitions. [2022-11-25 17:51:03,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 269 transitions, 3354 flow [2022-11-25 17:51:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:51:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:51:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3344 transitions. [2022-11-25 17:51:03,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3892445582586428 [2022-11-25 17:51:03,011 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3344 transitions. [2022-11-25 17:51:03,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3344 transitions. [2022-11-25 17:51:03,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:51:03,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3344 transitions. [2022-11-25 17:51:03,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 304.0) internal successors, (3344), 11 states have internal predecessors, (3344), 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) [2022-11-25 17:51:03,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 781.0) internal successors, (9372), 12 states have internal predecessors, (9372), 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) [2022-11-25 17:51:03,029 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 781.0) internal successors, (9372), 12 states have internal predecessors, (9372), 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) [2022-11-25 17:51:03,030 INFO L175 Difference]: Start difference. First operand has 129 places, 210 transitions, 2365 flow. Second operand 11 states and 3344 transitions. [2022-11-25 17:51:03,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 269 transitions, 3354 flow [2022-11-25 17:51:03,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 269 transitions, 3134 flow, removed 30 selfloop flow, removed 6 redundant places. [2022-11-25 17:51:03,156 INFO L231 Difference]: Finished difference. Result has 135 places, 220 transitions, 2518 flow [2022-11-25 17:51:03,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2518, PETRI_PLACES=135, PETRI_TRANSITIONS=220} [2022-11-25 17:51:03,158 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2022-11-25 17:51:03,159 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 220 transitions, 2518 flow [2022-11-25 17:51:03,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 297.40909090909093) internal successors, (6543), 22 states have internal predecessors, (6543), 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) [2022-11-25 17:51:03,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:51:03,160 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] [2022-11-25 17:51:03,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:51:03,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 17:51:03,368 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:51:03,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:03,368 INFO L85 PathProgramCache]: Analyzing trace with hash -501091163, now seen corresponding path program 9 times [2022-11-25 17:51:03,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:03,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032210224] [2022-11-25 17:51:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:03,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:51:04,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:04,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032210224] [2022-11-25 17:51:04,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032210224] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:51:04,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369579564] [2022-11-25 17:51:04,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:51:04,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:04,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:04,798 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:51:04,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 17:51:05,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-25 17:51:05,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:51:05,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-25 17:51:05,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:51:05,147 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 [2022-11-25 17:51:05,201 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 17:51:05,201 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 [2022-11-25 17:51:05,626 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-11-25 17:51:05,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 38 [2022-11-25 17:51:05,864 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:51:05,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 106 [2022-11-25 17:51:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:51:06,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:51:09,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:51:09,068 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 52 treesize of output 42 [2022-11-25 17:51:09,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:51:09,105 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:51:09,106 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 20 treesize of output 13 [2022-11-25 17:51:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:51:09,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369579564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:51:09,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:51:09,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 19 [2022-11-25 17:51:09,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217554493] [2022-11-25 17:51:09,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:51:09,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 17:51:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 17:51:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-11-25 17:51:10,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:51:13,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:51:17,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:51:22,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:51:24,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:51:26,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:51:32,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:51:32,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 781 [2022-11-25 17:51:32,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 220 transitions, 2518 flow. Second operand has 21 states, 21 states have (on average 296.4761904761905) internal successors, (6226), 21 states have internal predecessors, (6226), 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) [2022-11-25 17:51:32,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:51:32,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 781 [2022-11-25 17:51:32,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:51:34,303 INFO L130 PetriNetUnfolder]: 2059/3004 cut-off events. [2022-11-25 17:51:34,303 INFO L131 PetriNetUnfolder]: For 21479/21479 co-relation queries the response was YES. [2022-11-25 17:51:34,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17881 conditions, 3004 events. 2059/3004 cut-off events. For 21479/21479 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13158 event pairs, 262 based on Foata normal form. 1/3005 useless extension candidates. Maximal degree in co-relation 17790. Up to 2642 conditions per place. [2022-11-25 17:51:34,338 INFO L137 encePairwiseOnDemand]: 768/781 looper letters, 188 selfloop transitions, 85 changer transitions 1/274 dead transitions. [2022-11-25 17:51:34,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 274 transitions, 3472 flow [2022-11-25 17:51:34,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:51:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:51:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3331 transitions. [2022-11-25 17:51:34,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38773134675823534 [2022-11-25 17:51:34,345 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3331 transitions. [2022-11-25 17:51:34,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3331 transitions. [2022-11-25 17:51:34,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:51:34,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3331 transitions. [2022-11-25 17:51:34,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 302.8181818181818) internal successors, (3331), 11 states have internal predecessors, (3331), 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) [2022-11-25 17:51:34,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 781.0) internal successors, (9372), 12 states have internal predecessors, (9372), 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) [2022-11-25 17:51:34,364 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 781.0) internal successors, (9372), 12 states have internal predecessors, (9372), 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) [2022-11-25 17:51:34,364 INFO L175 Difference]: Start difference. First operand has 135 places, 220 transitions, 2518 flow. Second operand 11 states and 3331 transitions. [2022-11-25 17:51:34,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 274 transitions, 3472 flow [2022-11-25 17:51:34,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 274 transitions, 3221 flow, removed 78 selfloop flow, removed 6 redundant places. [2022-11-25 17:51:34,530 INFO L231 Difference]: Finished difference. Result has 141 places, 226 transitions, 2583 flow [2022-11-25 17:51:34,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2299, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2583, PETRI_PLACES=141, PETRI_TRANSITIONS=226} [2022-11-25 17:51:34,531 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 109 predicate places. [2022-11-25 17:51:34,531 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 226 transitions, 2583 flow [2022-11-25 17:51:34,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 296.4761904761905) internal successors, (6226), 21 states have internal predecessors, (6226), 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) [2022-11-25 17:51:34,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:51:34,533 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] [2022-11-25 17:51:34,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:51:34,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:34,734 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:51:34,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:34,734 INFO L85 PathProgramCache]: Analyzing trace with hash -486204887, now seen corresponding path program 10 times [2022-11-25 17:51:34,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:34,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946102876] [2022-11-25 17:51:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:34,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:51:36,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:36,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946102876] [2022-11-25 17:51:36,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946102876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:51:36,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595184098] [2022-11-25 17:51:36,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:51:36,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:36,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:36,018 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:51:36,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 17:51:36,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:51:36,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:51:36,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-25 17:51:36,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:51:36,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:51:36,635 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 14 treesize of output 16 [2022-11-25 17:51:36,778 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:51:36,778 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 35 treesize of output 23 [2022-11-25 17:51:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:51:36,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:51:37,186 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~asum~0 c_~bsum~0))) (and (forall ((v_ArrVal_945 (Array Int Int))) (<= .cse0 (+ c_~csum~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_945) c_~A~0.base) c_~A~0.offset)))) (forall ((v_ArrVal_945 (Array Int Int))) (<= (+ c_~csum~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_945) c_~A~0.base) c_~A~0.offset)) .cse0)))) is different from false [2022-11-25 17:51:37,211 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:51:37,211 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 48 treesize of output 38 [2022-11-25 17:51:37,217 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 14 treesize of output 12 [2022-11-25 17:51:37,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:51:37,247 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:51:37,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 13 [2022-11-25 17:51:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-11-25 17:51:37,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595184098] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:51:37,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:51:37,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-11-25 17:51:37,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466373608] [2022-11-25 17:51:37,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:51:37,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 17:51:37,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:37,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 17:51:37,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=465, Unknown=1, NotChecked=44, Total=600 [2022-11-25 17:51:37,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 781 [2022-11-25 17:51:37,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 226 transitions, 2583 flow. Second operand has 25 states, 25 states have (on average 280.44) internal successors, (7011), 25 states have internal predecessors, (7011), 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) [2022-11-25 17:51:37,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:51:37,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 781 [2022-11-25 17:51:37,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:51:39,469 INFO L130 PetriNetUnfolder]: 2270/3310 cut-off events. [2022-11-25 17:51:39,469 INFO L131 PetriNetUnfolder]: For 23722/23722 co-relation queries the response was YES. [2022-11-25 17:51:39,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19736 conditions, 3310 events. 2270/3310 cut-off events. For 23722/23722 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14769 event pairs, 255 based on Foata normal form. 1/3311 useless extension candidates. Maximal degree in co-relation 19642. Up to 2707 conditions per place. [2022-11-25 17:51:39,509 INFO L137 encePairwiseOnDemand]: 771/781 looper letters, 197 selfloop transitions, 113 changer transitions 1/311 dead transitions. [2022-11-25 17:51:39,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 311 transitions, 3927 flow [2022-11-25 17:51:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:51:39,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:51:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2879 transitions. [2022-11-25 17:51:39,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36862996158770805 [2022-11-25 17:51:39,520 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2879 transitions. [2022-11-25 17:51:39,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2879 transitions. [2022-11-25 17:51:39,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:51:39,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2879 transitions. [2022-11-25 17:51:39,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 287.9) internal successors, (2879), 10 states have internal predecessors, (2879), 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) [2022-11-25 17:51:39,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 781.0) internal successors, (8591), 11 states have internal predecessors, (8591), 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) [2022-11-25 17:51:39,537 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 781.0) internal successors, (8591), 11 states have internal predecessors, (8591), 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) [2022-11-25 17:51:39,537 INFO L175 Difference]: Start difference. First operand has 141 places, 226 transitions, 2583 flow. Second operand 10 states and 2879 transitions. [2022-11-25 17:51:39,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 311 transitions, 3927 flow [2022-11-25 17:51:39,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 311 transitions, 3706 flow, removed 30 selfloop flow, removed 8 redundant places. [2022-11-25 17:51:39,838 INFO L231 Difference]: Finished difference. Result has 147 places, 255 transitions, 3121 flow [2022-11-25 17:51:39,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2362, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3121, PETRI_PLACES=147, PETRI_TRANSITIONS=255} [2022-11-25 17:51:39,839 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 115 predicate places. [2022-11-25 17:51:39,839 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 255 transitions, 3121 flow [2022-11-25 17:51:39,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 280.44) internal successors, (7011), 25 states have internal predecessors, (7011), 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) [2022-11-25 17:51:39,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:51:39,841 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] [2022-11-25 17:51:39,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 17:51:40,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:40,049 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:51:40,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:40,049 INFO L85 PathProgramCache]: Analyzing trace with hash 554471021, now seen corresponding path program 11 times [2022-11-25 17:51:40,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:40,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548758115] [2022-11-25 17:51:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:40,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:51:41,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:41,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548758115] [2022-11-25 17:51:41,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548758115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:51:41,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493927190] [2022-11-25 17:51:41,991 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:51:41,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:41,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:41,993 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:51:41,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 17:51:42,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-25 17:51:42,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:51:42,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-25 17:51:42,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:51:42,346 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 [2022-11-25 17:51:42,454 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 17:51:42,455 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 [2022-11-25 17:51:42,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:51:42,973 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 14 treesize of output 16 [2022-11-25 17:51:43,183 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-11-25 17:51:43,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2022-11-25 17:51:43,387 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:51:43,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 94 [2022-11-25 17:51:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:51:43,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:51:47,807 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ (* |c_thread2Thread1of1ForFork0_~i~1#1| 4) c_~B~0.offset))) (and (forall ((~C~0.offset Int) (v_ArrVal_1013 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1013))) (let ((.cse0 (select (select .cse2 c_~A~0.base) c_~A~0.offset)) (.cse1 (select (select .cse2 c_~B~0.base) c_~B~0.offset))) (<= (+ .cse0 c_~csum~0 .cse1) (+ (select (select (store .cse2 c_~C~0.base (store (select .cse2 c_~C~0.base) ~C~0.offset (+ .cse0 .cse1))) c_~B~0.base) .cse3) c_~asum~0 c_~bsum~0))))) (forall ((~C~0.offset Int) (v_ArrVal_1013 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1013))) (let ((.cse5 (select (select .cse4 c_~A~0.base) c_~A~0.offset)) (.cse6 (select (select .cse4 c_~B~0.base) c_~B~0.offset))) (<= (+ (select (select (store .cse4 c_~C~0.base (store (select .cse4 c_~C~0.base) ~C~0.offset (+ .cse5 .cse6))) c_~B~0.base) .cse3) c_~asum~0 c_~bsum~0) (+ .cse5 c_~csum~0 .cse6))))))) is different from false [2022-11-25 17:51:47,830 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((~C~0.offset Int) (v_ArrVal_1013 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1013))) (let ((.cse0 (select (select .cse2 c_~A~0.base) c_~A~0.offset)) (.cse1 (select (select .cse2 c_~B~0.base) c_~B~0.offset))) (<= (+ .cse0 c_~csum~0 .cse1) (+ c_~asum~0 c_~bsum~0 (select (select (store .cse2 c_~C~0.base (store (select .cse2 c_~C~0.base) ~C~0.offset (+ .cse0 .cse1))) c_~B~0.base) c_~B~0.offset)))))) (forall ((~C~0.offset Int) (v_ArrVal_1013 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1013))) (let ((.cse4 (select (select .cse3 c_~A~0.base) c_~A~0.offset)) (.cse5 (select (select .cse3 c_~B~0.base) c_~B~0.offset))) (<= (+ c_~asum~0 c_~bsum~0 (select (select (store .cse3 c_~C~0.base (store (select .cse3 c_~C~0.base) ~C~0.offset (+ .cse4 .cse5))) c_~B~0.base) c_~B~0.offset)) (+ .cse4 c_~csum~0 .cse5)))))) is different from false [2022-11-25 17:51:47,901 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:51:47,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1622 treesize of output 1414 [2022-11-25 17:51:47,945 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:51:47,946 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 1484 treesize of output 1408 [2022-11-25 17:56:00,220 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,237 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,287 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,296 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,359 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,379 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,406 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,430 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,448 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,456 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,463 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,471 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,479 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,639 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,666 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:00,675 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:04,931 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 40 treesize of output 38 [2022-11-25 17:56:04,937 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 52 treesize of output 34 [2022-11-25 17:56:04,961 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 84 treesize of output 80 [2022-11-25 17:56:04,975 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:04,975 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 96 treesize of output 72 [2022-11-25 17:56:05,014 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,027 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,039 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,047 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 105 treesize of output 101 [2022-11-25 17:56:05,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:05,056 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 62 [2022-11-25 17:56:05,085 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 346 treesize of output 332 [2022-11-25 17:56:05,102 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-25 17:56:05,102 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 332 treesize of output 1 [2022-11-25 17:56:05,127 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-25 17:56:05,128 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 156 treesize of output 1 [2022-11-25 17:56:05,133 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,143 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,152 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,158 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,171 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,179 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,186 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,193 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,199 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,209 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 254 treesize of output 248 [2022-11-25 17:56:05,226 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-25 17:56:05,227 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 248 treesize of output 1 [2022-11-25 17:56:05,251 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 764 treesize of output 726 [2022-11-25 17:56:05,278 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:05,281 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 741 treesize of output 489 [2022-11-25 17:56:05,419 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 122 treesize of output 118 [2022-11-25 17:56:05,437 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:05,438 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 133 treesize of output 97 [2022-11-25 17:56:05,498 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 314 treesize of output 302 [2022-11-25 17:56:05,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:05,511 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 182 [2022-11-25 17:56:05,573 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 314 treesize of output 302 [2022-11-25 17:56:05,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:05,584 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 182 [2022-11-25 17:56:05,639 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 874 treesize of output 830 [2022-11-25 17:56:05,669 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:05,670 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 844 treesize of output 558 [2022-11-25 17:56:05,912 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:05,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:05,923 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2022-11-25 17:56:05,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:05,931 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 53 [2022-11-25 17:56:05,938 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 73 treesize of output 67 [2022-11-25 17:56:05,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:05,957 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-25 17:56:05,967 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 12 treesize of output 6 [2022-11-25 17:56:05,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:05,983 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2022-11-25 17:56:06,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:06,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 117 [2022-11-25 17:56:06,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:06,231 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:06,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 314 treesize of output 1 [2022-11-25 17:56:06,251 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,275 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-25 17:56:06,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 346 treesize of output 1 [2022-11-25 17:56:06,284 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,302 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,310 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,322 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,332 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,340 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,351 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,359 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,373 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,382 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,393 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,414 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,438 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:06,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:06,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 779 treesize of output 509 [2022-11-25 17:56:07,014 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:07,015 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 54 treesize of output 46 [2022-11-25 17:56:07,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:07,100 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:07,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 888 treesize of output 1 [2022-11-25 17:56:07,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:07,134 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:07,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 314 treesize of output 1 [2022-11-25 17:56:07,152 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:07,160 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:07,169 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:07,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:07,189 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:07,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 168 treesize of output 1 [2022-11-25 17:56:07,204 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:07,224 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:07,234 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:07,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:07,255 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:07,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 254 treesize of output 1 [2022-11-25 17:56:07,264 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:07,272 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:07,282 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:07,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:07,296 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-25 17:56:07,314 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:07,324 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:07,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:07,342 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 26 [2022-11-25 17:56:07,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:07,362 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:07,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 1 [2022-11-25 17:56:07,373 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:07,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:07,394 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:07,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 126 treesize of output 1 [2022-11-25 17:56:07,643 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:07,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 314 treesize of output 226 [2022-11-25 17:56:08,215 INFO L321 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2022-11-25 17:56:08,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 101 [2022-11-25 17:56:08,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:08,328 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:08,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 1 [2022-11-25 17:56:08,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:08,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 70 [2022-11-25 17:56:08,422 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:08,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:08,436 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:08,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 1 [2022-11-25 17:56:08,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:08,450 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:08,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 1 [2022-11-25 17:56:08,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:08,464 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:08,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 1 [2022-11-25 17:56:08,524 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:08,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 888 treesize of output 578 [2022-11-25 17:56:09,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,105 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 779 treesize of output 1 [2022-11-25 17:56:09,134 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:09,134 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 54 treesize of output 46 [2022-11-25 17:56:09,188 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,210 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,221 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,232 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,244 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,254 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,270 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,281 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,292 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,306 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,316 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,343 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 346 treesize of output 1 [2022-11-25 17:56:09,355 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,383 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 314 treesize of output 1 [2022-11-25 17:56:09,405 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,415 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,426 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,448 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 254 treesize of output 1 [2022-11-25 17:56:09,460 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,469 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,478 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,503 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,515 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,526 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:09,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,548 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 168 treesize of output 1 [2022-11-25 17:56:09,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,706 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 326 treesize of output 1 [2022-11-25 17:56:09,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,749 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 370 treesize of output 1 [2022-11-25 17:56:09,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,788 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 326 treesize of output 1 [2022-11-25 17:56:09,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,808 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 143 treesize of output 1 [2022-11-25 17:56:09,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,845 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 906 treesize of output 1 [2022-11-25 17:56:09,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,862 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 1 [2022-11-25 17:56:09,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,879 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 1 [2022-11-25 17:56:09,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,893 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 16 [2022-11-25 17:56:09,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,914 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 1 [2022-11-25 17:56:09,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,931 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 1 [2022-11-25 17:56:09,960 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 156 treesize of output 146 [2022-11-25 17:56:09,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:09,982 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:09,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 174 treesize of output 1 [2022-11-25 17:56:09,995 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 222 treesize of output 200 [2022-11-25 17:56:10,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,048 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 264 treesize of output 1 [2022-11-25 17:56:10,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,081 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 797 treesize of output 1 [2022-11-25 17:56:10,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,148 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 314 treesize of output 1 [2022-11-25 17:56:10,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,183 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 1 [2022-11-25 17:56:10,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,201 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 1 [2022-11-25 17:56:10,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,229 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 1 [2022-11-25 17:56:10,238 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,253 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 1 [2022-11-25 17:56:10,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,268 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 1 [2022-11-25 17:56:10,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,284 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 1 [2022-11-25 17:56:10,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,316 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 888 treesize of output 1 [2022-11-25 17:56:10,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,348 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 779 treesize of output 1 [2022-11-25 17:56:10,368 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,393 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,403 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,417 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,429 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,438 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,449 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,458 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,468 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,479 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,489 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,513 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 346 treesize of output 1 [2022-11-25 17:56:10,523 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,546 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 314 treesize of output 1 [2022-11-25 17:56:10,567 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,576 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,587 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,608 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 254 treesize of output 1 [2022-11-25 17:56:10,619 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,628 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,636 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,662 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,673 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,684 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-25 17:56:10,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,703 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 17:56:10,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 168 treesize of output 1 [2022-11-25 17:56:10,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:56:10,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:56:10,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:10,827 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:10,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 262 treesize of output 145 [2022-11-25 17:56:10,836 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 130 treesize of output 122 [2022-11-25 17:56:11,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-11-25 17:56:11,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493927190] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:56:11,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:56:11,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2022-11-25 17:56:11,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151505269] [2022-11-25 17:56:11,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:56:11,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 17:56:11,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:11,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 17:56:11,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=765, Unknown=2, NotChecked=114, Total=992 [2022-11-25 17:56:11,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 781 [2022-11-25 17:56:11,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 255 transitions, 3121 flow. Second operand has 32 states, 32 states have (on average 244.09375) internal successors, (7811), 32 states have internal predecessors, (7811), 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) [2022-11-25 17:56:11,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:56:11,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 781 [2022-11-25 17:56:11,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:56:13,554 INFO L130 PetriNetUnfolder]: 2359/3441 cut-off events. [2022-11-25 17:56:13,555 INFO L131 PetriNetUnfolder]: For 29573/29573 co-relation queries the response was YES. [2022-11-25 17:56:13,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21449 conditions, 3441 events. 2359/3441 cut-off events. For 29573/29573 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15495 event pairs, 298 based on Foata normal form. 1/3442 useless extension candidates. Maximal degree in co-relation 21343. Up to 2882 conditions per place. [2022-11-25 17:56:13,583 INFO L137 encePairwiseOnDemand]: 768/781 looper letters, 194 selfloop transitions, 115 changer transitions 1/310 dead transitions. [2022-11-25 17:56:13,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 310 transitions, 4205 flow [2022-11-25 17:56:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:56:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-25 17:56:13,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3490 transitions. [2022-11-25 17:56:13,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.319187854399122 [2022-11-25 17:56:13,592 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3490 transitions. [2022-11-25 17:56:13,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3490 transitions. [2022-11-25 17:56:13,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:56:13,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3490 transitions. [2022-11-25 17:56:13,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 249.28571428571428) internal successors, (3490), 14 states have internal predecessors, (3490), 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) [2022-11-25 17:56:13,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 781.0) internal successors, (11715), 15 states have internal predecessors, (11715), 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) [2022-11-25 17:56:13,614 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 781.0) internal successors, (11715), 15 states have internal predecessors, (11715), 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) [2022-11-25 17:56:13,614 INFO L175 Difference]: Start difference. First operand has 147 places, 255 transitions, 3121 flow. Second operand 14 states and 3490 transitions. [2022-11-25 17:56:13,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 310 transitions, 4205 flow [2022-11-25 17:56:13,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 310 transitions, 3969 flow, removed 100 selfloop flow, removed 3 redundant places. [2022-11-25 17:56:13,881 INFO L231 Difference]: Finished difference. Result has 162 places, 265 transitions, 3421 flow [2022-11-25 17:56:13,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3421, PETRI_PLACES=162, PETRI_TRANSITIONS=265} [2022-11-25 17:56:13,882 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 130 predicate places. [2022-11-25 17:56:13,882 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 265 transitions, 3421 flow [2022-11-25 17:56:13,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 244.09375) internal successors, (7811), 32 states have internal predecessors, (7811), 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) [2022-11-25 17:56:13,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:56:13,883 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] [2022-11-25 17:56:13,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 17:56:14,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 17:56:14,084 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:56:14,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:14,085 INFO L85 PathProgramCache]: Analyzing trace with hash 777739921, now seen corresponding path program 12 times [2022-11-25 17:56:14,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:14,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272439613] [2022-11-25 17:56:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:14,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:56:15,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:15,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272439613] [2022-11-25 17:56:15,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272439613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:56:15,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099588144] [2022-11-25 17:56:15,537 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:56:15,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:56:15,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:56:15,538 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:56:15,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 17:56:15,754 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-25 17:56:15,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:56:15,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-25 17:56:15,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:56:16,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:16,244 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 14 treesize of output 16 [2022-11-25 17:56:16,428 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:16,429 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 35 treesize of output 23 [2022-11-25 17:56:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:56:16,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:56:16,739 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* |c_thread2Thread1of1ForFork0_~i~1#1| 4) c_~B~0.offset))) (and (forall ((v_ArrVal_1080 (Array Int Int)) (~B~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1080))) (let ((.cse1 (select .cse0 ~B~0.base))) (<= (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) (select .cse1 c_~B~0.offset) c_~csum~0) (+ c_~asum~0 c_~bsum~0 (select .cse1 .cse2)))))) (forall ((v_ArrVal_1080 (Array Int Int)) (~B~0.base Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1080))) (let ((.cse3 (select .cse4 ~B~0.base))) (<= (+ c_~asum~0 c_~bsum~0 (select .cse3 .cse2)) (+ (select (select .cse4 c_~A~0.base) c_~A~0.offset) (select .cse3 c_~B~0.offset) c_~csum~0))))))) is different from false [2022-11-25 17:56:16,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:16,855 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 48 treesize of output 38 [2022-11-25 17:56:16,859 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 14 treesize of output 12 [2022-11-25 17:56:16,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:56:16,879 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:56:16,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 13 [2022-11-25 17:56:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:56:17,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099588144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:56:17,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:56:17,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-11-25 17:56:17,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608354587] [2022-11-25 17:56:17,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:56:17,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 17:56:17,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:17,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 17:56:17,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=504, Unknown=5, NotChecked=46, Total=650 [2022-11-25 17:56:17,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 781 [2022-11-25 17:56:17,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 265 transitions, 3421 flow. Second operand has 26 states, 26 states have (on average 280.5) internal successors, (7293), 26 states have internal predecessors, (7293), 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) [2022-11-25 17:56:17,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:56:17,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 781 [2022-11-25 17:56:17,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:56:19,172 INFO L130 PetriNetUnfolder]: 2449/3574 cut-off events. [2022-11-25 17:56:19,172 INFO L131 PetriNetUnfolder]: For 29909/29909 co-relation queries the response was YES. [2022-11-25 17:56:19,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22706 conditions, 3574 events. 2449/3574 cut-off events. For 29909/29909 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 16331 event pairs, 308 based on Foata normal form. 1/3575 useless extension candidates. Maximal degree in co-relation 22610. Up to 3007 conditions per place. [2022-11-25 17:56:19,199 INFO L137 encePairwiseOnDemand]: 771/781 looper letters, 206 selfloop transitions, 111 changer transitions 1/318 dead transitions. [2022-11-25 17:56:19,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 318 transitions, 4454 flow [2022-11-25 17:56:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:56:19,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:56:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2881 transitions. [2022-11-25 17:56:19,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36888604353393084 [2022-11-25 17:56:19,205 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2881 transitions. [2022-11-25 17:56:19,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2881 transitions. [2022-11-25 17:56:19,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:56:19,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2881 transitions. [2022-11-25 17:56:19,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 288.1) internal successors, (2881), 10 states have internal predecessors, (2881), 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) [2022-11-25 17:56:19,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 781.0) internal successors, (8591), 11 states have internal predecessors, (8591), 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) [2022-11-25 17:56:19,220 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 781.0) internal successors, (8591), 11 states have internal predecessors, (8591), 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) [2022-11-25 17:56:19,220 INFO L175 Difference]: Start difference. First operand has 162 places, 265 transitions, 3421 flow. Second operand 10 states and 2881 transitions. [2022-11-25 17:56:19,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 318 transitions, 4454 flow [2022-11-25 17:56:19,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 318 transitions, 4310 flow, removed 51 selfloop flow, removed 6 redundant places. [2022-11-25 17:56:19,366 INFO L231 Difference]: Finished difference. Result has 167 places, 271 transitions, 3650 flow [2022-11-25 17:56:19,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=3279, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3650, PETRI_PLACES=167, PETRI_TRANSITIONS=271} [2022-11-25 17:56:19,367 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2022-11-25 17:56:19,367 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 271 transitions, 3650 flow [2022-11-25 17:56:19,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 280.5) internal successors, (7293), 26 states have internal predecessors, (7293), 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) [2022-11-25 17:56:19,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:56:19,368 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] [2022-11-25 17:56:19,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 17:56:19,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:56:19,569 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:56:19,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1132500051, now seen corresponding path program 13 times [2022-11-25 17:56:19,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:19,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635199361] [2022-11-25 17:56:19,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:19,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:56:20,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:20,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635199361] [2022-11-25 17:56:20,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635199361] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:56:20,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550238584] [2022-11-25 17:56:20,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:56:20,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:56:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:56:20,838 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:56:20,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614121b0-7ac7-42a1-86f6-c1009e690a3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 17:56:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:21,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-25 17:56:21,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:56:21,106 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 [2022-11-25 17:56:21,187 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 17:56:21,187 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 [2022-11-25 17:56:21,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:56:21,498 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 14 treesize of output 16 [2022-11-25 17:56:21,657 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-11-25 17:56:21,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2022-11-25 17:56:21,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:21,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 94 [2022-11-25 17:56:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:56:22,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:56:23,439 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((~C~0.offset Int) (v_ArrVal_1148 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1148))) (let ((.cse0 (select (select .cse2 c_~A~0.base) c_~A~0.offset)) (.cse1 (select (select .cse2 c_~B~0.base) c_~B~0.offset))) (<= (+ .cse0 c_~csum~0 .cse1) (+ c_~asum~0 c_~bsum~0 (select (select (store .cse2 c_~C~0.base (store (select .cse2 c_~C~0.base) ~C~0.offset (+ .cse0 .cse1))) c_~B~0.base) c_~B~0.offset)))))) (forall ((~C~0.offset Int) (v_ArrVal_1148 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1148))) (let ((.cse4 (select (select .cse3 c_~A~0.base) c_~A~0.offset)) (.cse5 (select (select .cse3 c_~B~0.base) c_~B~0.offset))) (<= (+ c_~asum~0 c_~bsum~0 (select (select (store .cse3 c_~C~0.base (store (select .cse3 c_~C~0.base) ~C~0.offset (+ .cse4 .cse5))) c_~B~0.base) c_~B~0.offset)) (+ .cse4 c_~csum~0 .cse5)))))) is different from false [2022-11-25 17:56:23,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:23,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2582 treesize of output 2254 [2022-11-25 17:56:23,528 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:56:23,529 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 2390 treesize of output 2238