./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL --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 a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:37:05,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:37:05,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:37:05,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:37:05,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:37:05,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:37:05,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:37:05,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:37:05,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:37:05,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:37:05,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:37:05,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:37:05,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:37:05,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:37:05,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:37:05,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:37:05,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:37:05,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:37:05,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:37:05,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:37:05,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:37:05,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:37:05,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:37:05,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:37:05,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:37:05,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:37:05,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:37:05,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:37:05,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:37:05,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:37:05,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:37:05,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:37:05,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:37:05,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:37:05,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:37:05,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:37:05,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:37:05,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:37:05,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:37:05,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:37:05,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:37:05,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:37:05,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:37:05,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:37:05,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:37:05,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:37:05,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:37:05,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:37:05,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:37:05,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:37:05,370 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:37:05,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:37:05,372 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:37:05,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:37:05,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:37:05,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:37:05,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:37:05,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:37:05,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:37:05,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:37:05,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:37:05,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:37:05,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:37:05,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:37:05,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:37:05,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:37:05,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:37:05,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:37:05,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:37:05,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:37:05,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:37:05,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:37:05,378 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:37:05,379 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:37:05,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:37:05,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:37:05,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 [2021-11-19 04:37:05,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:37:05,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:37:05,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:37:05,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:37:05,663 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:37:05,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2021-11-19 04:37:05,782 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/data/0f9facde0/1384f9edc0da423a8a0af298513c110c/FLAG5ad85c6e2 [2021-11-19 04:37:06,298 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:37:06,303 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2021-11-19 04:37:06,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/data/0f9facde0/1384f9edc0da423a8a0af298513c110c/FLAG5ad85c6e2 [2021-11-19 04:37:06,649 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/data/0f9facde0/1384f9edc0da423a8a0af298513c110c [2021-11-19 04:37:06,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:37:06,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:37:06,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:37:06,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:37:06,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:37:06,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:37:06" (1/1) ... [2021-11-19 04:37:06,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9d8af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06, skipping insertion in model container [2021-11-19 04:37:06,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:37:06" (1/1) ... [2021-11-19 04:37:06,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:37:06,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:37:06,890 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2553,2566] [2021-11-19 04:37:06,899 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:37:06,907 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:37:06,931 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2553,2566] [2021-11-19 04:37:06,935 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:37:06,950 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:37:06,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06 WrapperNode [2021-11-19 04:37:06,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:37:06,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:37:06,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:37:06,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:37:06,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06" (1/1) ... [2021-11-19 04:37:06,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06" (1/1) ... [2021-11-19 04:37:06,993 INFO L137 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 101 [2021-11-19 04:37:06,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:37:06,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:37:06,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:37:06,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:37:07,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06" (1/1) ... [2021-11-19 04:37:07,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06" (1/1) ... [2021-11-19 04:37:07,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06" (1/1) ... [2021-11-19 04:37:07,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06" (1/1) ... [2021-11-19 04:37:07,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06" (1/1) ... [2021-11-19 04:37:07,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06" (1/1) ... [2021-11-19 04:37:07,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06" (1/1) ... [2021-11-19 04:37:07,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:37:07,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:37:07,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:37:07,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:37:07,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06" (1/1) ... [2021-11-19 04:37:07,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:37:07,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:37:07,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:37:07,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:37:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:37:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 04:37:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 04:37:07,152 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 04:37:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 04:37:07,153 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-19 04:37:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-19 04:37:07,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:37:07,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:37:07,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 04:37:07,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-19 04:37:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-19 04:37:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:37:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:37:07,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:37:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 04:37:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:37:07,157 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 04:37:07,271 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:37:07,273 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:37:07,549 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:37:07,639 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:37:07,640 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 04:37:07,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:37:07 BoogieIcfgContainer [2021-11-19 04:37:07,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:37:07,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:37:07,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:37:07,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:37:07,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:37:06" (1/3) ... [2021-11-19 04:37:07,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64803133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:37:07, skipping insertion in model container [2021-11-19 04:37:07,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:06" (2/3) ... [2021-11-19 04:37:07,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64803133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:37:07, skipping insertion in model container [2021-11-19 04:37:07,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:37:07" (3/3) ... [2021-11-19 04:37:07,653 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2021-11-19 04:37:07,658 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 04:37:07,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:37:07,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:37:07,658 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 04:37:07,694 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,694 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,695 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,695 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,695 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,696 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,696 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,696 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,696 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,697 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,697 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,697 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,697 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,697 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,698 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,698 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,698 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,699 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,699 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,699 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,700 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,700 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,700 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,700 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,700 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,701 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,701 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,701 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,702 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,702 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,702 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,702 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,703 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,703 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,703 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,703 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,704 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,704 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,704 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,704 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,705 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,705 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,705 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,705 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,706 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,706 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,706 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,707 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,707 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,707 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,707 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,707 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,708 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,709 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,709 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,710 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,710 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,710 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,710 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,711 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,711 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,711 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,711 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,712 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,712 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,712 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,712 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,713 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,713 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,713 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,713 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,714 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,714 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,714 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,714 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,715 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,715 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,715 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,715 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,716 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,716 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,744 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,744 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,744 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,745 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,745 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,745 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,747 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,747 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,747 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,747 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,748 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,748 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,750 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,750 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,750 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:37:07,754 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-19 04:37:07,843 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:37:07,853 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 04:37:07,853 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 04:37:07,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 151 places, 153 transitions, 330 flow [2021-11-19 04:37:07,952 INFO L129 PetriNetUnfolder]: 12/150 cut-off events. [2021-11-19 04:37:07,952 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-19 04:37:07,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 12/150 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2021-11-19 04:37:07,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 153 transitions, 330 flow [2021-11-19 04:37:07,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 139 transitions, 296 flow [2021-11-19 04:37:08,036 INFO L129 PetriNetUnfolder]: 12/138 cut-off events. [2021-11-19 04:37:08,037 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-19 04:37:08,037 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:37:08,038 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:08,038 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:37:08,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:08,044 INFO L85 PathProgramCache]: Analyzing trace with hash -977644638, now seen corresponding path program 1 times [2021-11-19 04:37:08,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:08,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882197991] [2021-11-19 04:37:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:08,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:08,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:08,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882197991] [2021-11-19 04:37:08,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882197991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:08,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:08,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:37:08,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705247895] [2021-11-19 04:37:08,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:08,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:37:08,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:08,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:37:08,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:37:08,347 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 153 [2021-11-19 04:37:08,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 139 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:08,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:37:08,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 153 [2021-11-19 04:37:08,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:37:08,450 INFO L129 PetriNetUnfolder]: 41/264 cut-off events. [2021-11-19 04:37:08,451 INFO L130 PetriNetUnfolder]: For 50/51 co-relation queries the response was YES. [2021-11-19 04:37:08,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 264 events. 41/264 cut-off events. For 50/51 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 695 event pairs, 15 based on Foata normal form. 42/275 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2021-11-19 04:37:08,457 INFO L132 encePairwiseOnDemand]: 145/153 looper letters, 9 selfloop transitions, 0 changer transitions 4/131 dead transitions. [2021-11-19 04:37:08,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 131 transitions, 298 flow [2021-11-19 04:37:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:37:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-19 04:37:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 287 transitions. [2021-11-19 04:37:08,483 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9379084967320261 [2021-11-19 04:37:08,484 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 287 transitions. [2021-11-19 04:37:08,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 287 transitions. [2021-11-19 04:37:08,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:37:08,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 287 transitions. [2021-11-19 04:37:08,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:08,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:08,514 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:08,516 INFO L186 Difference]: Start difference. First operand has 137 places, 139 transitions, 296 flow. Second operand 2 states and 287 transitions. [2021-11-19 04:37:08,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 131 transitions, 298 flow [2021-11-19 04:37:08,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 286 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-19 04:37:08,528 INFO L242 Difference]: Finished difference. Result has 132 places, 127 transitions, 260 flow [2021-11-19 04:37:08,531 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=260, PETRI_PLACES=132, PETRI_TRANSITIONS=127} [2021-11-19 04:37:08,538 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, -5 predicate places. [2021-11-19 04:37:08,538 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 127 transitions, 260 flow [2021-11-19 04:37:08,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:08,539 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:37:08,539 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:08,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:37:08,540 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:37:08,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:08,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1446866490, now seen corresponding path program 1 times [2021-11-19 04:37:08,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:08,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047205545] [2021-11-19 04:37:08,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:08,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:09,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:09,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047205545] [2021-11-19 04:37:09,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047205545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:09,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:09,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:37:09,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128890960] [2021-11-19 04:37:09,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:09,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:37:09,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:09,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:37:09,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:37:09,044 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 153 [2021-11-19 04:37:09,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 127 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 106.16666666666667) internal successors, (637), 6 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:09,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:37:09,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 153 [2021-11-19 04:37:09,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:37:09,347 INFO L129 PetriNetUnfolder]: 395/783 cut-off events. [2021-11-19 04:37:09,347 INFO L130 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2021-11-19 04:37:09,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1388 conditions, 783 events. 395/783 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3301 event pairs, 103 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 1385. Up to 305 conditions per place. [2021-11-19 04:37:09,360 INFO L132 encePairwiseOnDemand]: 146/153 looper letters, 42 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2021-11-19 04:37:09,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 136 transitions, 376 flow [2021-11-19 04:37:09,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:37:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-19 04:37:09,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 655 transitions. [2021-11-19 04:37:09,366 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7135076252723311 [2021-11-19 04:37:09,366 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 655 transitions. [2021-11-19 04:37:09,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 655 transitions. [2021-11-19 04:37:09,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:37:09,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 655 transitions. [2021-11-19 04:37:09,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:09,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:09,381 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:09,381 INFO L186 Difference]: Start difference. First operand has 132 places, 127 transitions, 260 flow. Second operand 6 states and 655 transitions. [2021-11-19 04:37:09,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 136 transitions, 376 flow [2021-11-19 04:37:09,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 136 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-19 04:37:09,390 INFO L242 Difference]: Finished difference. Result has 135 places, 128 transitions, 285 flow [2021-11-19 04:37:09,391 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2021-11-19 04:37:09,392 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, -2 predicate places. [2021-11-19 04:37:09,398 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 285 flow [2021-11-19 04:37:09,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.16666666666667) internal successors, (637), 6 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:09,400 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:37:09,400 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:09,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:37:09,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:37:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash 419718841, now seen corresponding path program 1 times [2021-11-19 04:37:09,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:09,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872299678] [2021-11-19 04:37:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:09,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:09,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:09,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872299678] [2021-11-19 04:37:09,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872299678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:09,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:09,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 04:37:09,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872827418] [2021-11-19 04:37:09,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:09,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:37:09,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:09,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:37:09,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:37:09,865 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 153 [2021-11-19 04:37:09,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 285 flow. Second operand has 9 states, 9 states have (on average 96.44444444444444) internal successors, (868), 9 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:09,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:37:09,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 153 [2021-11-19 04:37:09,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:37:10,235 INFO L129 PetriNetUnfolder]: 395/799 cut-off events. [2021-11-19 04:37:10,235 INFO L130 PetriNetUnfolder]: For 204/204 co-relation queries the response was YES. [2021-11-19 04:37:10,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1597 conditions, 799 events. 395/799 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3351 event pairs, 199 based on Foata normal form. 1/622 useless extension candidates. Maximal degree in co-relation 1591. Up to 508 conditions per place. [2021-11-19 04:37:10,245 INFO L132 encePairwiseOnDemand]: 142/153 looper letters, 54 selfloop transitions, 7 changer transitions 4/144 dead transitions. [2021-11-19 04:37:10,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 144 transitions, 453 flow [2021-11-19 04:37:10,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:37:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-19 04:37:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 893 transitions. [2021-11-19 04:37:10,249 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6485112563543937 [2021-11-19 04:37:10,249 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 893 transitions. [2021-11-19 04:37:10,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 893 transitions. [2021-11-19 04:37:10,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:37:10,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 893 transitions. [2021-11-19 04:37:10,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.22222222222223) internal successors, (893), 9 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:10,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:10,259 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:10,259 INFO L186 Difference]: Start difference. First operand has 135 places, 128 transitions, 285 flow. Second operand 9 states and 893 transitions. [2021-11-19 04:37:10,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 144 transitions, 453 flow [2021-11-19 04:37:10,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 144 transitions, 441 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-19 04:37:10,269 INFO L242 Difference]: Finished difference. Result has 143 places, 129 transitions, 307 flow [2021-11-19 04:37:10,269 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=307, PETRI_PLACES=143, PETRI_TRANSITIONS=129} [2021-11-19 04:37:10,272 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 6 predicate places. [2021-11-19 04:37:10,272 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 129 transitions, 307 flow [2021-11-19 04:37:10,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.44444444444444) internal successors, (868), 9 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:10,274 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:37:10,274 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:10,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:37:10,274 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:37:10,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1436558539, now seen corresponding path program 1 times [2021-11-19 04:37:10,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:10,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708028970] [2021-11-19 04:37:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:10,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:37:10,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:10,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708028970] [2021-11-19 04:37:10,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708028970] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:37:10,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946299402] [2021-11-19 04:37:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:10,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:37:10,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:37:10,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:37:10,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:37:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:10,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 04:37:10,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:37:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:37:10,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:37:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:37:11,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946299402] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 04:37:11,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:37:11,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-11-19 04:37:11,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715835965] [2021-11-19 04:37:11,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:11,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:37:11,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:11,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:37:11,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-19 04:37:11,359 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 153 [2021-11-19 04:37:11,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 129 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 116.71428571428571) internal successors, (817), 7 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:11,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:37:11,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 153 [2021-11-19 04:37:11,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:37:11,566 INFO L129 PetriNetUnfolder]: 170/586 cut-off events. [2021-11-19 04:37:11,566 INFO L130 PetriNetUnfolder]: For 167/189 co-relation queries the response was YES. [2021-11-19 04:37:11,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1015 conditions, 586 events. 170/586 cut-off events. For 167/189 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2778 event pairs, 80 based on Foata normal form. 22/555 useless extension candidates. Maximal degree in co-relation 1005. Up to 135 conditions per place. [2021-11-19 04:37:11,574 INFO L132 encePairwiseOnDemand]: 145/153 looper letters, 35 selfloop transitions, 7 changer transitions 0/138 dead transitions. [2021-11-19 04:37:11,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 138 transitions, 420 flow [2021-11-19 04:37:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:37:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-19 04:37:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2021-11-19 04:37:11,578 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7759103641456583 [2021-11-19 04:37:11,578 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2021-11-19 04:37:11,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2021-11-19 04:37:11,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:37:11,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2021-11-19 04:37:11,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:11,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:11,587 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:11,587 INFO L186 Difference]: Start difference. First operand has 143 places, 129 transitions, 307 flow. Second operand 7 states and 831 transitions. [2021-11-19 04:37:11,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 138 transitions, 420 flow [2021-11-19 04:37:11,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 138 transitions, 400 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-11-19 04:37:11,598 INFO L242 Difference]: Finished difference. Result has 143 places, 131 transitions, 321 flow [2021-11-19 04:37:11,598 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=321, PETRI_PLACES=143, PETRI_TRANSITIONS=131} [2021-11-19 04:37:11,600 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 6 predicate places. [2021-11-19 04:37:11,601 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 131 transitions, 321 flow [2021-11-19 04:37:11,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.71428571428571) internal successors, (817), 7 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:11,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:37:11,606 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:11,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:37:11,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:37:11,832 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:37:11,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:11,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1411804440, now seen corresponding path program 1 times [2021-11-19 04:37:11,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:11,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221629072] [2021-11-19 04:37:11,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:11,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:13,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:13,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221629072] [2021-11-19 04:37:13,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221629072] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:37:13,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081296353] [2021-11-19 04:37:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:13,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:37:13,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:37:13,303 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:37:13,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:37:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:13,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-19 04:37:13,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:37:14,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-19 04:37:15,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-19 04:37:16,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-19 04:37:16,533 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 04:37:16,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 35 [2021-11-19 04:37:17,235 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:37:17,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 41 [2021-11-19 04:37:18,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:18,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:37:23,754 WARN L838 $PredicateComparison]: unable to prove that (forall ((~M~0 Int)) (or (and (forall ((|ULTIMATE.start_main_~#t2~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre15#1| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre15#1|)) c_~A~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~A~0.offset)))) (or (<= .cse0 c_~max1~0) (and (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre17#1| Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre15#1|)))) (let ((.cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre17#1|)) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (<= .cse1 c_~max2~0) (= .cse1 (select (select .cse2 c_~A~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~A~0.offset))))))) (or (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre17#1| Int)) (< c_~max2~0 (select (select (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre15#1|)))) (store .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre17#1|))) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (= c_~max2~0 .cse0)))))) (forall ((|ULTIMATE.start_main_~#t2~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre15#1| Int)) (or (< c_~max1~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre15#1|)) c_~A~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~A~0.offset))) (and (or (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre17#1| Int)) (< c_~max2~0 (select (select (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre15#1|)))) (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre17#1|))) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (= c_~max2~0 c_~max1~0)) (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre17#1| Int)) (let ((.cse5 (select (select (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre15#1|)))) (store .cse6 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre17#1|))) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (= .cse5 c_~max1~0) (<= .cse5 c_~max2~0)))))))) (< 0 ~M~0) (<= (+ 2 ~M~0) c_~N~0))) is different from false [2021-11-19 04:38:44,661 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:38:44,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 482858 treesize of output 469350 [2021-11-19 04:39:02,005 WARN L227 SmtUtils]: Spent 17.33s on a formula simplification. DAG size of input: 2025 DAG size of output: 2023 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-19 04:39:02,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 04:39:02,031 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:39:02,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-11-19 04:39:02,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435506298] [2021-11-19 04:39:02,031 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 04:39:02,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-19 04:39:02,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:39:02,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-19 04:39:02,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=4155, Unknown=28, NotChecked=134, Total=4830 [2021-11-19 04:39:02,038 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 153 [2021-11-19 04:39:02,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 321 flow. Second operand has 29 states, 29 states have (on average 64.51724137931035) internal successors, (1871), 29 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:02,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:39:02,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 153 [2021-11-19 04:39:02,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:39:05,929 INFO L129 PetriNetUnfolder]: 1274/2545 cut-off events. [2021-11-19 04:39:05,929 INFO L130 PetriNetUnfolder]: For 906/922 co-relation queries the response was YES. [2021-11-19 04:39:05,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5371 conditions, 2545 events. 1274/2545 cut-off events. For 906/922 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15376 event pairs, 140 based on Foata normal form. 1/2432 useless extension candidates. Maximal degree in co-relation 5361. Up to 972 conditions per place. [2021-11-19 04:39:05,963 INFO L132 encePairwiseOnDemand]: 121/153 looper letters, 182 selfloop transitions, 67 changer transitions 6/308 dead transitions. [2021-11-19 04:39:05,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 308 transitions, 1356 flow [2021-11-19 04:39:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 04:39:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-11-19 04:39:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2300 transitions. [2021-11-19 04:39:05,974 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4555357496533967 [2021-11-19 04:39:05,974 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2300 transitions. [2021-11-19 04:39:05,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2300 transitions. [2021-11-19 04:39:05,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:39:05,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2300 transitions. [2021-11-19 04:39:05,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 69.6969696969697) internal successors, (2300), 33 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:05,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 153.0) internal successors, (5202), 34 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:05,999 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 153.0) internal successors, (5202), 34 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:05,999 INFO L186 Difference]: Start difference. First operand has 143 places, 131 transitions, 321 flow. Second operand 33 states and 2300 transitions. [2021-11-19 04:39:06,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 308 transitions, 1356 flow [2021-11-19 04:39:06,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 308 transitions, 1331 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-19 04:39:06,014 INFO L242 Difference]: Finished difference. Result has 189 places, 191 transitions, 723 flow [2021-11-19 04:39:06,015 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=723, PETRI_PLACES=189, PETRI_TRANSITIONS=191} [2021-11-19 04:39:06,017 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 52 predicate places. [2021-11-19 04:39:06,018 INFO L470 AbstractCegarLoop]: Abstraction has has 189 places, 191 transitions, 723 flow [2021-11-19 04:39:06,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 64.51724137931035) internal successors, (1871), 29 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:06,019 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:39:06,019 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:39:06,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:39:06,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:39:06,245 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:39:06,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:39:06,245 INFO L85 PathProgramCache]: Analyzing trace with hash -989334820, now seen corresponding path program 2 times [2021-11-19 04:39:06,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:39:06,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318899395] [2021-11-19 04:39:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:39:06,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:39:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:39:07,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:39:07,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318899395] [2021-11-19 04:39:07,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318899395] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:39:07,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825356999] [2021-11-19 04:39:07,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:39:07,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:39:07,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:39:07,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:39:07,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 04:39:07,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:39:07,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:39:07,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-19 04:39:07,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:39:09,727 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:39:09,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 41 [2021-11-19 04:39:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:39:11,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:39:11,408 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:39:11,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 85 treesize of output 53 [2021-11-19 04:39:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:39:13,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825356999] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:39:13,054 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:39:13,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 20] total 56 [2021-11-19 04:39:13,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564497513] [2021-11-19 04:39:13,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:39:13,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-19 04:39:13,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:39:13,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-19 04:39:13,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=2599, Unknown=0, NotChecked=0, Total=3080 [2021-11-19 04:39:13,063 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 153 [2021-11-19 04:39:13,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 191 transitions, 723 flow. Second operand has 56 states, 56 states have (on average 75.01785714285714) internal successors, (4201), 56 states have internal predecessors, (4201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:13,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:39:13,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 153 [2021-11-19 04:39:13,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:39:23,434 INFO L129 PetriNetUnfolder]: 2088/4561 cut-off events. [2021-11-19 04:39:23,435 INFO L130 PetriNetUnfolder]: For 3593/3725 co-relation queries the response was YES. [2021-11-19 04:39:23,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11601 conditions, 4561 events. 2088/4561 cut-off events. For 3593/3725 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 34106 event pairs, 181 based on Foata normal form. 36/4421 useless extension candidates. Maximal degree in co-relation 11573. Up to 1543 conditions per place. [2021-11-19 04:39:23,503 INFO L132 encePairwiseOnDemand]: 120/153 looper letters, 263 selfloop transitions, 152 changer transitions 18/492 dead transitions. [2021-11-19 04:39:23,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 492 transitions, 2742 flow [2021-11-19 04:39:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-19 04:39:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-11-19 04:39:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 4339 transitions. [2021-11-19 04:39:23,522 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5156268568033274 [2021-11-19 04:39:23,522 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 4339 transitions. [2021-11-19 04:39:23,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 4339 transitions. [2021-11-19 04:39:23,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:39:23,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 4339 transitions. [2021-11-19 04:39:23,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 78.89090909090909) internal successors, (4339), 55 states have internal predecessors, (4339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:23,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 153.0) internal successors, (8568), 56 states have internal predecessors, (8568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:23,563 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 153.0) internal successors, (8568), 56 states have internal predecessors, (8568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:23,563 INFO L186 Difference]: Start difference. First operand has 189 places, 191 transitions, 723 flow. Second operand 55 states and 4339 transitions. [2021-11-19 04:39:23,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 492 transitions, 2742 flow [2021-11-19 04:39:23,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 492 transitions, 2700 flow, removed 13 selfloop flow, removed 10 redundant places. [2021-11-19 04:39:23,601 INFO L242 Difference]: Finished difference. Result has 254 places, 293 transitions, 1769 flow [2021-11-19 04:39:23,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=1769, PETRI_PLACES=254, PETRI_TRANSITIONS=293} [2021-11-19 04:39:23,605 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 117 predicate places. [2021-11-19 04:39:23,605 INFO L470 AbstractCegarLoop]: Abstraction has has 254 places, 293 transitions, 1769 flow [2021-11-19 04:39:23,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 75.01785714285714) internal successors, (4201), 56 states have internal predecessors, (4201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:23,608 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:39:23,608 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:39:23,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:39:23,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-19 04:39:23,829 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:39:23,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:39:23,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1124329774, now seen corresponding path program 3 times [2021-11-19 04:39:23,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:39:23,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875088608] [2021-11-19 04:39:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:39:23,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:39:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:39:25,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:39:25,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875088608] [2021-11-19 04:39:25,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875088608] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:39:25,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017326132] [2021-11-19 04:39:25,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 04:39:25,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:39:25,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:39:25,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:39:25,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 04:39:25,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 04:39:25,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:39:25,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-19 04:39:25,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:39:27,628 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 04:39:27,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 35 [2021-11-19 04:39:27,996 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 04:39:27,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 35 [2021-11-19 04:39:28,458 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:39:28,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 41 [2021-11-19 04:39:30,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:39:30,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:39:41,593 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:39:41,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 599 treesize of output 551 [2021-11-19 04:39:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:39:44,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017326132] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:39:44,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:39:44,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26, 25] total 66 [2021-11-19 04:39:44,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092100885] [2021-11-19 04:39:44,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:39:44,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-19 04:39:44,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:39:44,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-19 04:39:44,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=3733, Unknown=3, NotChecked=0, Total=4290 [2021-11-19 04:39:44,168 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 153 [2021-11-19 04:39:44,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 293 transitions, 1769 flow. Second operand has 66 states, 66 states have (on average 65.81818181818181) internal successors, (4344), 66 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:44,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:39:44,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 153 [2021-11-19 04:39:44,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:40:10,880 INFO L129 PetriNetUnfolder]: 6515/12806 cut-off events. [2021-11-19 04:40:10,880 INFO L130 PetriNetUnfolder]: For 30659/31955 co-relation queries the response was YES. [2021-11-19 04:40:11,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43514 conditions, 12806 events. 6515/12806 cut-off events. For 30659/31955 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 109270 event pairs, 123 based on Foata normal form. 308/12706 useless extension candidates. Maximal degree in co-relation 43465. Up to 3937 conditions per place. [2021-11-19 04:40:11,208 INFO L132 encePairwiseOnDemand]: 113/153 looper letters, 591 selfloop transitions, 922 changer transitions 24/1591 dead transitions. [2021-11-19 04:40:11,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1591 transitions, 12917 flow [2021-11-19 04:40:11,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2021-11-19 04:40:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-11-19 04:40:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 10221 transitions. [2021-11-19 04:40:11,239 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4575611066344346 [2021-11-19 04:40:11,240 INFO L72 ComplementDD]: Start complementDD. Operand 146 states and 10221 transitions. [2021-11-19 04:40:11,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 146 states and 10221 transitions. [2021-11-19 04:40:11,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:40:11,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 146 states and 10221 transitions. [2021-11-19 04:40:11,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 147 states, 146 states have (on average 70.0068493150685) internal successors, (10221), 146 states have internal predecessors, (10221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:11,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 147 states, 147 states have (on average 153.0) internal successors, (22491), 147 states have internal predecessors, (22491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:11,352 INFO L81 ComplementDD]: Finished complementDD. Result has 147 states, 147 states have (on average 153.0) internal successors, (22491), 147 states have internal predecessors, (22491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:11,353 INFO L186 Difference]: Start difference. First operand has 254 places, 293 transitions, 1769 flow. Second operand 146 states and 10221 transitions. [2021-11-19 04:40:11,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1591 transitions, 12917 flow [2021-11-19 04:40:11,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 1591 transitions, 12431 flow, removed 209 selfloop flow, removed 24 redundant places. [2021-11-19 04:40:11,672 INFO L242 Difference]: Finished difference. Result has 424 places, 1098 transitions, 10671 flow [2021-11-19 04:40:11,673 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=146, PETRI_FLOW=10671, PETRI_PLACES=424, PETRI_TRANSITIONS=1098} [2021-11-19 04:40:11,674 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 287 predicate places. [2021-11-19 04:40:11,674 INFO L470 AbstractCegarLoop]: Abstraction has has 424 places, 1098 transitions, 10671 flow [2021-11-19 04:40:11,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 65.81818181818181) internal successors, (4344), 66 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:11,676 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:40:11,676 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:40:11,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:40:11,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-19 04:40:11,904 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:40:11,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:40:11,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1633340404, now seen corresponding path program 4 times [2021-11-19 04:40:11,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:40:11,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546547207] [2021-11-19 04:40:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:40:11,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:40:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:40:13,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:40:13,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546547207] [2021-11-19 04:40:13,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546547207] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:40:13,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363208749] [2021-11-19 04:40:13,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 04:40:13,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:40:13,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:40:13,104 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:40:13,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 04:40:13,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 04:40:13,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:40:13,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-19 04:40:13,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:40:14,860 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:40:14,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 47 [2021-11-19 04:40:16,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:40:16,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:40:17,008 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:40:17,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 85 treesize of output 53 [2021-11-19 04:40:18,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:40:18,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363208749] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:40:18,575 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:40:18,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 20] total 49 [2021-11-19 04:40:18,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097518683] [2021-11-19 04:40:18,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:40:18,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-19 04:40:18,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:40:18,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-19 04:40:18,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=2012, Unknown=0, NotChecked=0, Total=2352 [2021-11-19 04:40:18,583 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 153 [2021-11-19 04:40:18,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 1098 transitions, 10671 flow. Second operand has 49 states, 49 states have (on average 74.85714285714286) internal successors, (3668), 49 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:18,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:40:18,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 153 [2021-11-19 04:40:18,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:40:29,364 INFO L129 PetriNetUnfolder]: 6402/12490 cut-off events. [2021-11-19 04:40:29,364 INFO L130 PetriNetUnfolder]: For 94612/96178 co-relation queries the response was YES. [2021-11-19 04:40:29,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58508 conditions, 12490 events. 6402/12490 cut-off events. For 94612/96178 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 105535 event pairs, 837 based on Foata normal form. 170/12227 useless extension candidates. Maximal degree in co-relation 58410. Up to 6967 conditions per place. [2021-11-19 04:40:29,657 INFO L132 encePairwiseOnDemand]: 123/153 looper letters, 774 selfloop transitions, 483 changer transitions 12/1332 dead transitions. [2021-11-19 04:40:29,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1332 transitions, 15380 flow [2021-11-19 04:40:29,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-19 04:40:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-11-19 04:40:29,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3835 transitions. [2021-11-19 04:40:29,664 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5115379485127385 [2021-11-19 04:40:29,664 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 3835 transitions. [2021-11-19 04:40:29,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 3835 transitions. [2021-11-19 04:40:29,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:40:29,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 3835 transitions. [2021-11-19 04:40:29,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 78.26530612244898) internal successors, (3835), 49 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:29,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 153.0) internal successors, (7650), 50 states have internal predecessors, (7650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:29,691 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 153.0) internal successors, (7650), 50 states have internal predecessors, (7650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:29,691 INFO L186 Difference]: Start difference. First operand has 424 places, 1098 transitions, 10671 flow. Second operand 49 states and 3835 transitions. [2021-11-19 04:40:29,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1332 transitions, 15380 flow [2021-11-19 04:40:31,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 1332 transitions, 14125 flow, removed 554 selfloop flow, removed 36 redundant places. [2021-11-19 04:40:31,543 INFO L242 Difference]: Finished difference. Result has 442 places, 1190 transitions, 12116 flow [2021-11-19 04:40:31,544 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=9665, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1098, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=12116, PETRI_PLACES=442, PETRI_TRANSITIONS=1190} [2021-11-19 04:40:31,545 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 305 predicate places. [2021-11-19 04:40:31,545 INFO L470 AbstractCegarLoop]: Abstraction has has 442 places, 1190 transitions, 12116 flow [2021-11-19 04:40:31,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 74.85714285714286) internal successors, (3668), 49 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:31,546 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:40:31,547 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:40:31,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:40:31,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:40:31,747 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:40:31,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:40:31,748 INFO L85 PathProgramCache]: Analyzing trace with hash -735324788, now seen corresponding path program 5 times [2021-11-19 04:40:31,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:40:31,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109019610] [2021-11-19 04:40:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:40:31,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:40:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:40:33,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:40:33,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109019610] [2021-11-19 04:40:33,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109019610] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:40:33,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605153630] [2021-11-19 04:40:33,121 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 04:40:33,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:40:33,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:40:33,123 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:40:33,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 04:40:33,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-11-19 04:40:33,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:40:33,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-19 04:40:33,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:40:35,074 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:40:35,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2021-11-19 04:40:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:40:35,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:40:36,277 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:40:36,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 85 treesize of output 53 [2021-11-19 04:40:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:40:37,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605153630] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:40:37,827 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:40:37,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 20] total 58 [2021-11-19 04:40:37,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214405676] [2021-11-19 04:40:37,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:40:37,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-19 04:40:37,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:40:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-19 04:40:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=2893, Unknown=0, NotChecked=0, Total=3306 [2021-11-19 04:40:37,837 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 153 [2021-11-19 04:40:37,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 1190 transitions, 12116 flow. Second operand has 58 states, 58 states have (on average 74.94827586206897) internal successors, (4347), 58 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:37,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:40:37,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 153 [2021-11-19 04:40:37,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:40:47,003 INFO L129 PetriNetUnfolder]: 6759/13335 cut-off events. [2021-11-19 04:40:47,003 INFO L130 PetriNetUnfolder]: For 106770/108587 co-relation queries the response was YES. [2021-11-19 04:40:47,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62647 conditions, 13335 events. 6759/13335 cut-off events. For 106770/108587 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 115306 event pairs, 730 based on Foata normal form. 237/13105 useless extension candidates. Maximal degree in co-relation 62547. Up to 7260 conditions per place. [2021-11-19 04:40:47,400 INFO L132 encePairwiseOnDemand]: 117/153 looper letters, 954 selfloop transitions, 405 changer transitions 6/1428 dead transitions. [2021-11-19 04:40:47,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 1428 transitions, 16973 flow [2021-11-19 04:40:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-19 04:40:47,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-11-19 04:40:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3607 transitions. [2021-11-19 04:40:47,406 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5125035521454959 [2021-11-19 04:40:47,407 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3607 transitions. [2021-11-19 04:40:47,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3607 transitions. [2021-11-19 04:40:47,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:40:47,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3607 transitions. [2021-11-19 04:40:47,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 78.41304347826087) internal successors, (3607), 46 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:47,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 153.0) internal successors, (7191), 47 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:47,427 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 153.0) internal successors, (7191), 47 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:47,428 INFO L186 Difference]: Start difference. First operand has 442 places, 1190 transitions, 12116 flow. Second operand 46 states and 3607 transitions. [2021-11-19 04:40:47,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 1428 transitions, 16973 flow [2021-11-19 04:40:49,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1428 transitions, 16647 flow, removed 111 selfloop flow, removed 30 redundant places. [2021-11-19 04:40:49,474 INFO L242 Difference]: Finished difference. Result has 465 places, 1281 transitions, 13977 flow [2021-11-19 04:40:49,476 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=11885, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=824, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=13977, PETRI_PLACES=465, PETRI_TRANSITIONS=1281} [2021-11-19 04:40:49,476 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 328 predicate places. [2021-11-19 04:40:49,477 INFO L470 AbstractCegarLoop]: Abstraction has has 465 places, 1281 transitions, 13977 flow [2021-11-19 04:40:49,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 74.94827586206897) internal successors, (4347), 58 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:49,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:40:49,478 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:40:49,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:40:49,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:40:49,679 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:40:49,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:40:49,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1495287060, now seen corresponding path program 6 times [2021-11-19 04:40:49,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:40:49,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736952462] [2021-11-19 04:40:49,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:40:49,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:40:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:40:51,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:40:51,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736952462] [2021-11-19 04:40:51,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736952462] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:40:51,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910823162] [2021-11-19 04:40:51,403 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 04:40:51,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:40:51,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:40:51,404 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:40:51,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 04:40:51,484 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-19 04:40:51,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:40:51,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-19 04:40:51,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:40:52,658 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:40:52,907 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:40:52,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 75 treesize of output 51 [2021-11-19 04:40:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:40:54,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:40:54,547 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:40:54,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 85 treesize of output 53 [2021-11-19 04:40:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:40:55,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910823162] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:40:55,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:40:55,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16, 15] total 45 [2021-11-19 04:40:55,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509696721] [2021-11-19 04:40:55,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:40:55,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-19 04:40:55,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:40:55,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-19 04:40:55,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1734, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 04:40:55,421 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 153 [2021-11-19 04:40:55,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1281 transitions, 13977 flow. Second operand has 45 states, 45 states have (on average 69.08888888888889) internal successors, (3109), 45 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:40:55,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:40:55,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 153 [2021-11-19 04:40:55,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:41:21,568 INFO L129 PetriNetUnfolder]: 29258/48810 cut-off events. [2021-11-19 04:41:21,568 INFO L130 PetriNetUnfolder]: For 472102/472208 co-relation queries the response was YES. [2021-11-19 04:41:22,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242864 conditions, 48810 events. 29258/48810 cut-off events. For 472102/472208 co-relation queries the response was YES. Maximal size of possible extension queue 2908. Compared 438462 event pairs, 7050 based on Foata normal form. 47/45541 useless extension candidates. Maximal degree in co-relation 242757. Up to 27964 conditions per place. [2021-11-19 04:41:23,072 INFO L132 encePairwiseOnDemand]: 117/153 looper letters, 1207 selfloop transitions, 773 changer transitions 18/2054 dead transitions. [2021-11-19 04:41:23,073 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 2054 transitions, 25443 flow [2021-11-19 04:41:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-19 04:41:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-11-19 04:41:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 5777 transitions. [2021-11-19 04:41:23,081 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47795151816000664 [2021-11-19 04:41:23,082 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 5777 transitions. [2021-11-19 04:41:23,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 5777 transitions. [2021-11-19 04:41:23,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:41:23,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 5777 transitions. [2021-11-19 04:41:23,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 73.12658227848101) internal successors, (5777), 79 states have internal predecessors, (5777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:41:23,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 153.0) internal successors, (12240), 80 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:41:23,110 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 153.0) internal successors, (12240), 80 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:41:23,111 INFO L186 Difference]: Start difference. First operand has 465 places, 1281 transitions, 13977 flow. Second operand 79 states and 5777 transitions. [2021-11-19 04:41:23,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 2054 transitions, 25443 flow [2021-11-19 04:41:49,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 2054 transitions, 24888 flow, removed 183 selfloop flow, removed 31 redundant places. [2021-11-19 04:41:49,205 INFO L242 Difference]: Finished difference. Result has 548 places, 1676 transitions, 21636 flow [2021-11-19 04:41:49,207 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=13635, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=783, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=21636, PETRI_PLACES=548, PETRI_TRANSITIONS=1676} [2021-11-19 04:41:49,207 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 411 predicate places. [2021-11-19 04:41:49,208 INFO L470 AbstractCegarLoop]: Abstraction has has 548 places, 1676 transitions, 21636 flow [2021-11-19 04:41:49,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 69.08888888888889) internal successors, (3109), 45 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:41:49,209 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:41:49,209 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:41:49,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:41:49,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-19 04:41:49,424 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:41:49,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:41:49,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1726008998, now seen corresponding path program 7 times [2021-11-19 04:41:49,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:41:49,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841365585] [2021-11-19 04:41:49,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:41:49,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:41:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:50,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:41:50,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:41:50,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841365585] [2021-11-19 04:41:50,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841365585] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:41:50,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620511553] [2021-11-19 04:41:50,696 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 04:41:50,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:41:50,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:41:50,698 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:41:50,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0165086c-1d18-4cdc-b902-5f72e5aefd40/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 04:41:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:50,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-19 04:41:50,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:41:52,998 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-19 04:41:52,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 40 [2021-11-19 04:41:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:41:53,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:41:53,682 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:41:53,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 85 treesize of output 53 [2021-11-19 04:41:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:41:55,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620511553] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:41:55,123 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:41:55,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 18] total 57 [2021-11-19 04:41:55,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553604806] [2021-11-19 04:41:55,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:41:55,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-19 04:41:55,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:41:55,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-19 04:41:55,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=2702, Unknown=0, NotChecked=0, Total=3192 [2021-11-19 04:41:55,130 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 153 [2021-11-19 04:41:55,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 1676 transitions, 21636 flow. Second operand has 57 states, 57 states have (on average 71.26315789473684) internal successors, (4062), 57 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:41:55,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:41:55,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 153 [2021-11-19 04:41:55,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand