./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be --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 fccc7b0ac30aa8fb83f4199c20be7500362e4a2e16c3523f5f3500c3487f8182 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:03:27,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:03:27,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:03:27,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:03:27,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:03:27,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:03:27,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:03:27,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:03:27,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:03:27,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:03:27,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:03:27,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:03:27,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:03:27,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:03:27,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:03:27,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:03:27,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:03:27,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:03:27,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:03:27,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:03:27,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:03:27,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:03:27,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:03:27,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:03:27,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:03:27,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:03:27,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:03:27,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:03:27,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:03:27,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:03:27,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:03:27,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:03:27,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:03:27,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:03:27,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:03:27,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:03:27,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:03:27,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:03:27,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:03:27,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:03:27,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:03:27,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:03:27,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:03:27,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:03:27,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:03:27,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:03:27,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:03:27,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:03:27,714 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:03:27,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:03:27,715 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:03:27,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:03:27,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:03:27,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:03:27,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:03:27,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:03:27,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:03:27,716 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:03:27,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:03:27,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:03:27,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:03:27,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:03:27,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:03:27,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:03:27,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:03:27,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:03:27,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:03:27,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:03:27,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:03:27,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:03:27,720 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:03:27,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:03:27,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:03:27,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:03:27,721 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_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fccc7b0ac30aa8fb83f4199c20be7500362e4a2e16c3523f5f3500c3487f8182 [2021-10-21 19:03:28,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:03:28,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:03:28,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:03:28,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:03:28,079 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:03:28,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2021-10-21 19:03:28,185 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/data/98e13212c/12dcbed9832e4d8a948757d9cc995528/FLAG659fc4d8b [2021-10-21 19:03:28,821 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:03:28,822 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/sv-benchmarks/c/weaver/test-easy6.wvr.c [2021-10-21 19:03:28,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/data/98e13212c/12dcbed9832e4d8a948757d9cc995528/FLAG659fc4d8b [2021-10-21 19:03:29,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/data/98e13212c/12dcbed9832e4d8a948757d9cc995528 [2021-10-21 19:03:29,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:03:29,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:03:29,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:03:29,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:03:29,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:03:29,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:03:29" (1/1) ... [2021-10-21 19:03:29,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff3eb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29, skipping insertion in model container [2021-10-21 19:03:29,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:03:29" (1/1) ... [2021-10-21 19:03:29,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:03:29,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:03:29,505 WARN L228 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_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/sv-benchmarks/c/weaver/test-easy6.wvr.c[2038,2051] [2021-10-21 19:03:29,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:03:29,529 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:03:29,566 WARN L228 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_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/sv-benchmarks/c/weaver/test-easy6.wvr.c[2038,2051] [2021-10-21 19:03:29,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:03:29,597 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:03:29,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29 WrapperNode [2021-10-21 19:03:29,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:03:29,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:03:29,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:03:29,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:03:29,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29" (1/1) ... [2021-10-21 19:03:29,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29" (1/1) ... [2021-10-21 19:03:29,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:03:29,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:03:29,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:03:29,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:03:29,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29" (1/1) ... [2021-10-21 19:03:29,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29" (1/1) ... [2021-10-21 19:03:29,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29" (1/1) ... [2021-10-21 19:03:29,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29" (1/1) ... [2021-10-21 19:03:29,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29" (1/1) ... [2021-10-21 19:03:29,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29" (1/1) ... [2021-10-21 19:03:29,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29" (1/1) ... [2021-10-21 19:03:29,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:03:29,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:03:29,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:03:29,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:03:29,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29" (1/1) ... [2021-10-21 19:03:29,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:03:29,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:29,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:29,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:03:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-21 19:03:29,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-21 19:03:29,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-21 19:03:29,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-21 19:03:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:03:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:03:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:03:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:03:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:03:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:03:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:03:29,832 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 19:03:30,272 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:03:30,272 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-21 19:03:30,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:03:30 BoogieIcfgContainer [2021-10-21 19:03:30,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:03:30,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:03:30,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:03:30,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:03:30,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:03:29" (1/3) ... [2021-10-21 19:03:30,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd756be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:03:30, skipping insertion in model container [2021-10-21 19:03:30,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:29" (2/3) ... [2021-10-21 19:03:30,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd756be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:03:30, skipping insertion in model container [2021-10-21 19:03:30,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:03:30" (3/3) ... [2021-10-21 19:03:30,285 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2021-10-21 19:03:30,291 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 19:03:30,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:03:30,292 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:03:30,292 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 19:03:30,342 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,342 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,343 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,343 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,343 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,344 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,344 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,344 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,345 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,345 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,345 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,346 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,346 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,346 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,347 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,347 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,348 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,348 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,348 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,348 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,349 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,349 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,349 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,350 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,350 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,353 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,353 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,353 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,354 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,354 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,354 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,354 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,355 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,355 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,355 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,356 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,356 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,356 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,357 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,357 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,357 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,358 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,358 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,358 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,358 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,359 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,359 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,359 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,360 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,360 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,360 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,365 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,366 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,371 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:03:30,392 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-21 19:03:30,450 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:03:30,457 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 [2021-10-21 19:03:30,458 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 19:03:30,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 97 transitions, 210 flow [2021-10-21 19:03:30,571 INFO L129 PetriNetUnfolder]: 5/95 cut-off events. [2021-10-21 19:03:30,572 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-21 19:03:30,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 5/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2021-10-21 19:03:30,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 97 transitions, 210 flow [2021-10-21 19:03:30,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 87 transitions, 186 flow [2021-10-21 19:03:30,635 INFO L129 PetriNetUnfolder]: 5/86 cut-off events. [2021-10-21 19:03:30,643 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-21 19:03:30,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:03:30,645 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] [2021-10-21 19:03:30,645 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:03:30,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:30,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1328964062, now seen corresponding path program 1 times [2021-10-21 19:03:30,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:30,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493429657] [2021-10-21 19:03:30,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:30,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:31,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:31,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493429657] [2021-10-21 19:03:31,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493429657] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:31,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:31,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 19:03:31,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017190165] [2021-10-21 19:03:31,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:03:31,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:03:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:03:31,368 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2021-10-21 19:03:31,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 186 flow. Second operand has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:31,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:03:31,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2021-10-21 19:03:31,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:03:31,697 INFO L129 PetriNetUnfolder]: 1/141 cut-off events. [2021-10-21 19:03:31,697 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-10-21 19:03:31,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 141 events. 1/141 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 334 event pairs, 1 based on Foata normal form. 14/147 useless extension candidates. Maximal degree in co-relation 99. Up to 7 conditions per place. [2021-10-21 19:03:31,700 INFO L132 encePairwiseOnDemand]: 82/97 looper letters, 16 selfloop transitions, 7 changer transitions 13/102 dead transitions. [2021-10-21 19:03:31,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 102 transitions, 280 flow [2021-10-21 19:03:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:03:31,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:03:31,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1072 transitions. [2021-10-21 19:03:31,726 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8501189532117367 [2021-10-21 19:03:31,733 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1072 transitions. [2021-10-21 19:03:31,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1072 transitions. [2021-10-21 19:03:31,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:03:31,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1072 transitions. [2021-10-21 19:03:31,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 82.46153846153847) internal successors, (1072), 13 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:31,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:31,773 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:31,775 INFO L186 Difference]: Start difference. First operand has 89 places, 87 transitions, 186 flow. Second operand 13 states and 1072 transitions. [2021-10-21 19:03:31,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 102 transitions, 280 flow [2021-10-21 19:03:31,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 102 transitions, 272 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-21 19:03:31,798 INFO L242 Difference]: Finished difference. Result has 102 places, 81 transitions, 199 flow [2021-10-21 19:03:31,801 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=199, PETRI_PLACES=102, PETRI_TRANSITIONS=81} [2021-10-21 19:03:31,802 INFO L334 CegarLoopForPetriNet]: 89 programPoint places, 13 predicate places. [2021-10-21 19:03:31,803 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 81 transitions, 199 flow [2021-10-21 19:03:31,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:31,805 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:03:31,805 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] [2021-10-21 19:03:31,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:03:31,806 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:03:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:31,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1850557136, now seen corresponding path program 2 times [2021-10-21 19:03:31,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:31,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022536582] [2021-10-21 19:03:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:31,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:32,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:32,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022536582] [2021-10-21 19:03:32,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022536582] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:32,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:32,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 19:03:32,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328487441] [2021-10-21 19:03:32,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:03:32,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:32,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:03:32,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:03:32,135 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2021-10-21 19:03:32,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 81 transitions, 199 flow. Second operand has 9 states, 9 states have (on average 71.22222222222223) internal successors, (641), 9 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:32,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:03:32,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2021-10-21 19:03:32,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:03:32,601 INFO L129 PetriNetUnfolder]: 89/648 cut-off events. [2021-10-21 19:03:32,601 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2021-10-21 19:03:32,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 648 events. 89/648 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4201 event pairs, 3 based on Foata normal form. 3/640 useless extension candidates. Maximal degree in co-relation 947. Up to 72 conditions per place. [2021-10-21 19:03:32,613 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 37 selfloop transitions, 12 changer transitions 19/129 dead transitions. [2021-10-21 19:03:32,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 129 transitions, 431 flow [2021-10-21 19:03:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:03:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:03:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 967 transitions. [2021-10-21 19:03:32,625 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7668517049960349 [2021-10-21 19:03:32,625 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 967 transitions. [2021-10-21 19:03:32,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 967 transitions. [2021-10-21 19:03:32,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:03:32,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 967 transitions. [2021-10-21 19:03:32,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.38461538461539) internal successors, (967), 13 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:32,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:32,639 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:32,639 INFO L186 Difference]: Start difference. First operand has 102 places, 81 transitions, 199 flow. Second operand 13 states and 967 transitions. [2021-10-21 19:03:32,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 129 transitions, 431 flow [2021-10-21 19:03:32,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 129 transitions, 423 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-21 19:03:32,655 INFO L242 Difference]: Finished difference. Result has 108 places, 89 transitions, 279 flow [2021-10-21 19:03:32,655 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=279, PETRI_PLACES=108, PETRI_TRANSITIONS=89} [2021-10-21 19:03:32,656 INFO L334 CegarLoopForPetriNet]: 89 programPoint places, 19 predicate places. [2021-10-21 19:03:32,656 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 89 transitions, 279 flow [2021-10-21 19:03:32,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.22222222222223) internal successors, (641), 9 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:32,657 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:03:32,658 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] [2021-10-21 19:03:32,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:03:32,659 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:03:32,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:32,663 INFO L82 PathProgramCache]: Analyzing trace with hash -143757788, now seen corresponding path program 3 times [2021-10-21 19:03:32,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:32,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684045703] [2021-10-21 19:03:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:32,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:32,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:32,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684045703] [2021-10-21 19:03:32,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684045703] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:32,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:32,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 19:03:32,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085706574] [2021-10-21 19:03:32,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:03:32,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:32,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:03:32,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:03:32,895 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2021-10-21 19:03:32,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 89 transitions, 279 flow. Second operand has 9 states, 9 states have (on average 71.22222222222223) internal successors, (641), 9 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:32,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:03:32,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2021-10-21 19:03:32,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:03:33,235 INFO L129 PetriNetUnfolder]: 55/347 cut-off events. [2021-10-21 19:03:33,236 INFO L130 PetriNetUnfolder]: For 210/220 co-relation queries the response was YES. [2021-10-21 19:03:33,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 347 events. 55/347 cut-off events. For 210/220 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1762 event pairs, 4 based on Foata normal form. 11/352 useless extension candidates. Maximal degree in co-relation 684. Up to 52 conditions per place. [2021-10-21 19:03:33,241 INFO L132 encePairwiseOnDemand]: 87/97 looper letters, 30 selfloop transitions, 16 changer transitions 9/116 dead transitions. [2021-10-21 19:03:33,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 464 flow [2021-10-21 19:03:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:03:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:03:33,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 952 transitions. [2021-10-21 19:03:33,247 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7549563838223632 [2021-10-21 19:03:33,247 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 952 transitions. [2021-10-21 19:03:33,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 952 transitions. [2021-10-21 19:03:33,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:03:33,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 952 transitions. [2021-10-21 19:03:33,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.23076923076923) internal successors, (952), 13 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:33,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:33,265 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:33,266 INFO L186 Difference]: Start difference. First operand has 108 places, 89 transitions, 279 flow. Second operand 13 states and 952 transitions. [2021-10-21 19:03:33,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 464 flow [2021-10-21 19:03:33,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 116 transitions, 436 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-10-21 19:03:33,283 INFO L242 Difference]: Finished difference. Result has 115 places, 91 transitions, 317 flow [2021-10-21 19:03:33,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=317, PETRI_PLACES=115, PETRI_TRANSITIONS=91} [2021-10-21 19:03:33,285 INFO L334 CegarLoopForPetriNet]: 89 programPoint places, 26 predicate places. [2021-10-21 19:03:33,285 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 91 transitions, 317 flow [2021-10-21 19:03:33,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.22222222222223) internal successors, (641), 9 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:33,296 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:03:33,297 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] [2021-10-21 19:03:33,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:03:33,298 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:03:33,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:33,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1261320520, now seen corresponding path program 4 times [2021-10-21 19:03:33,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:33,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256225808] [2021-10-21 19:03:33,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:33,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:33,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:33,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256225808] [2021-10-21 19:03:33,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256225808] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:33,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:33,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 19:03:33,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152031340] [2021-10-21 19:03:33,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:03:33,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:03:33,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:03:33,523 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2021-10-21 19:03:33,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 91 transitions, 317 flow. Second operand has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:33,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:03:33,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2021-10-21 19:03:33,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:03:33,724 INFO L129 PetriNetUnfolder]: 10/240 cut-off events. [2021-10-21 19:03:33,724 INFO L130 PetriNetUnfolder]: For 123/125 co-relation queries the response was YES. [2021-10-21 19:03:33,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 240 events. 10/240 cut-off events. For 123/125 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 933 event pairs, 3 based on Foata normal form. 3/241 useless extension candidates. Maximal degree in co-relation 417. Up to 13 conditions per place. [2021-10-21 19:03:33,726 INFO L132 encePairwiseOnDemand]: 89/97 looper letters, 11 selfloop transitions, 6 changer transitions 11/98 dead transitions. [2021-10-21 19:03:33,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 98 transitions, 375 flow [2021-10-21 19:03:33,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:03:33,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 19:03:33,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 813 transitions. [2021-10-21 19:03:33,731 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8381443298969072 [2021-10-21 19:03:33,732 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 813 transitions. [2021-10-21 19:03:33,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 813 transitions. [2021-10-21 19:03:33,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:03:33,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 813 transitions. [2021-10-21 19:03:33,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 81.3) internal successors, (813), 10 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:33,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:33,742 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:33,743 INFO L186 Difference]: Start difference. First operand has 115 places, 91 transitions, 317 flow. Second operand 10 states and 813 transitions. [2021-10-21 19:03:33,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 98 transitions, 375 flow [2021-10-21 19:03:33,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 98 transitions, 335 flow, removed 10 selfloop flow, removed 13 redundant places. [2021-10-21 19:03:33,753 INFO L242 Difference]: Finished difference. Result has 110 places, 83 transitions, 253 flow [2021-10-21 19:03:33,754 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=253, PETRI_PLACES=110, PETRI_TRANSITIONS=83} [2021-10-21 19:03:33,754 INFO L334 CegarLoopForPetriNet]: 89 programPoint places, 21 predicate places. [2021-10-21 19:03:33,754 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 83 transitions, 253 flow [2021-10-21 19:03:33,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:33,755 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:03:33,756 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] [2021-10-21 19:03:33,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:03:33,756 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:03:33,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:33,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1729777448, now seen corresponding path program 5 times [2021-10-21 19:03:33,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:33,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014292492] [2021-10-21 19:03:33,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:33,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:33,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:33,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014292492] [2021-10-21 19:03:33,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014292492] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:33,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:33,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 19:03:33,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69425878] [2021-10-21 19:03:33,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:03:33,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:03:33,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:03:33,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2021-10-21 19:03:33,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 83 transitions, 253 flow. Second operand has 10 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:33,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:03:33,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2021-10-21 19:03:33,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:03:34,269 INFO L129 PetriNetUnfolder]: 49/405 cut-off events. [2021-10-21 19:03:34,270 INFO L130 PetriNetUnfolder]: For 205/215 co-relation queries the response was YES. [2021-10-21 19:03:34,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 405 events. 49/405 cut-off events. For 205/215 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2089 event pairs, 3 based on Foata normal form. 9/408 useless extension candidates. Maximal degree in co-relation 733. Up to 50 conditions per place. [2021-10-21 19:03:34,274 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 21 selfloop transitions, 9 changer transitions 21/110 dead transitions. [2021-10-21 19:03:34,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 110 transitions, 435 flow [2021-10-21 19:03:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:03:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:03:34,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 949 transitions. [2021-10-21 19:03:34,279 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7525773195876289 [2021-10-21 19:03:34,280 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 949 transitions. [2021-10-21 19:03:34,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 949 transitions. [2021-10-21 19:03:34,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:03:34,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 949 transitions. [2021-10-21 19:03:34,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,291 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,291 INFO L186 Difference]: Start difference. First operand has 110 places, 83 transitions, 253 flow. Second operand 13 states and 949 transitions. [2021-10-21 19:03:34,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 110 transitions, 435 flow [2021-10-21 19:03:34,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 110 transitions, 390 flow, removed 6 selfloop flow, removed 13 redundant places. [2021-10-21 19:03:34,300 INFO L242 Difference]: Finished difference. Result has 108 places, 81 transitions, 236 flow [2021-10-21 19:03:34,300 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=236, PETRI_PLACES=108, PETRI_TRANSITIONS=81} [2021-10-21 19:03:34,301 INFO L334 CegarLoopForPetriNet]: 89 programPoint places, 19 predicate places. [2021-10-21 19:03:34,301 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 81 transitions, 236 flow [2021-10-21 19:03:34,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,302 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:03:34,302 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] [2021-10-21 19:03:34,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:03:34,303 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:03:34,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:34,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1938470926, now seen corresponding path program 6 times [2021-10-21 19:03:34,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:34,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86388737] [2021-10-21 19:03:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:34,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:34,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:34,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86388737] [2021-10-21 19:03:34,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86388737] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:34,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:34,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:03:34,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861878946] [2021-10-21 19:03:34,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:03:34,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:34,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:03:34,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:03:34,411 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-10-21 19:03:34,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 81 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:03:34,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-10-21 19:03:34,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:03:34,505 INFO L129 PetriNetUnfolder]: 10/221 cut-off events. [2021-10-21 19:03:34,505 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-10-21 19:03:34,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 221 events. 10/221 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 722 event pairs, 0 based on Foata normal form. 3/222 useless extension candidates. Maximal degree in co-relation 224. Up to 20 conditions per place. [2021-10-21 19:03:34,507 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 11 selfloop transitions, 2 changer transitions 14/96 dead transitions. [2021-10-21 19:03:34,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 96 transitions, 331 flow [2021-10-21 19:03:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:03:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:03:34,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 568 transitions. [2021-10-21 19:03:34,510 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8365243004418262 [2021-10-21 19:03:34,511 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 568 transitions. [2021-10-21 19:03:34,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 568 transitions. [2021-10-21 19:03:34,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:03:34,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 568 transitions. [2021-10-21 19:03:34,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.14285714285714) internal successors, (568), 7 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,517 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,518 INFO L186 Difference]: Start difference. First operand has 108 places, 81 transitions, 236 flow. Second operand 7 states and 568 transitions. [2021-10-21 19:03:34,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 96 transitions, 331 flow [2021-10-21 19:03:34,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 96 transitions, 285 flow, removed 11 selfloop flow, removed 14 redundant places. [2021-10-21 19:03:34,523 INFO L242 Difference]: Finished difference. Result has 100 places, 81 transitions, 216 flow [2021-10-21 19:03:34,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2021-10-21 19:03:34,523 INFO L334 CegarLoopForPetriNet]: 89 programPoint places, 11 predicate places. [2021-10-21 19:03:34,524 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 216 flow [2021-10-21 19:03:34,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:03:34,525 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] [2021-10-21 19:03:34,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:03:34,525 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:03:34,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:34,526 INFO L82 PathProgramCache]: Analyzing trace with hash -245307812, now seen corresponding path program 7 times [2021-10-21 19:03:34,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:34,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203705650] [2021-10-21 19:03:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:34,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:34,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:34,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203705650] [2021-10-21 19:03:34,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203705650] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:34,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:34,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 19:03:34,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425599810] [2021-10-21 19:03:34,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:03:34,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:34,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:03:34,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:03:34,775 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2021-10-21 19:03:34,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 216 flow. Second operand has 10 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:03:34,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2021-10-21 19:03:34,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:03:34,972 INFO L129 PetriNetUnfolder]: 16/149 cut-off events. [2021-10-21 19:03:34,972 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2021-10-21 19:03:34,977 INFO L84 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 149 events. 16/149 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 443 event pairs, 4 based on Foata normal form. 2/144 useless extension candidates. Maximal degree in co-relation 189. Up to 17 conditions per place. [2021-10-21 19:03:34,978 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2021-10-21 19:03:34,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 345 flow [2021-10-21 19:03:34,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:03:34,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 19:03:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 734 transitions. [2021-10-21 19:03:34,982 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.756701030927835 [2021-10-21 19:03:34,982 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 734 transitions. [2021-10-21 19:03:34,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 734 transitions. [2021-10-21 19:03:34,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:03:34,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 734 transitions. [2021-10-21 19:03:34,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.4) internal successors, (734), 10 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,990 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,990 INFO L186 Difference]: Start difference. First operand has 100 places, 81 transitions, 216 flow. Second operand 10 states and 734 transitions. [2021-10-21 19:03:34,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 345 flow [2021-10-21 19:03:34,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 93 transitions, 307 flow, removed 13 selfloop flow, removed 9 redundant places. [2021-10-21 19:03:34,994 INFO L242 Difference]: Finished difference. Result has 88 places, 0 transitions, 0 flow [2021-10-21 19:03:34,995 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=88, PETRI_TRANSITIONS=0} [2021-10-21 19:03:34,995 INFO L334 CegarLoopForPetriNet]: 89 programPoint places, -1 predicate places. [2021-10-21 19:03:34,995 INFO L470 AbstractCegarLoop]: Abstraction has has 88 places, 0 transitions, 0 flow [2021-10-21 19:03:34,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:03:34,999 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:03:35,000 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 19:03:35,000 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 19:03:35,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:03:35,008 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 19:03:35,008 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:03:35,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:03:35 BasicIcfg [2021-10-21 19:03:35,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:03:35,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:03:35,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:03:35,014 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:03:35,015 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:03:30" (3/4) ... [2021-10-21 19:03:35,018 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:03:35,025 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-21 19:03:35,026 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-21 19:03:35,033 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-21 19:03:35,034 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:03:35,034 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:03:35,034 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:03:35,091 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:03:35,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:03:35,093 INFO L168 Benchmark]: Toolchain (without parser) took 5901.15 ms. Allocated memory was 127.9 MB in the beginning and 161.5 MB in the end (delta: 33.6 MB). Free memory was 95.9 MB in the beginning and 60.2 MB in the end (delta: 35.6 MB). Peak memory consumption was 68.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:03:35,093 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:03:35,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.71 ms. Allocated memory is still 127.9 MB. Free memory was 95.6 MB in the beginning and 104.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:03:35,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.70 ms. Allocated memory is still 127.9 MB. Free memory was 104.0 MB in the beginning and 102.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:03:35,098 INFO L168 Benchmark]: Boogie Preprocessor took 58.27 ms. Allocated memory is still 127.9 MB. Free memory was 102.3 MB in the beginning and 101.5 MB in the end (delta: 838.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:03:35,098 INFO L168 Benchmark]: RCFGBuilder took 557.84 ms. Allocated memory is still 127.9 MB. Free memory was 101.1 MB in the beginning and 89.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:03:35,098 INFO L168 Benchmark]: TraceAbstraction took 4735.61 ms. Allocated memory was 127.9 MB in the beginning and 161.5 MB in the end (delta: 33.6 MB). Free memory was 89.3 MB in the beginning and 63.4 MB in the end (delta: 25.9 MB). Peak memory consumption was 61.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:03:35,099 INFO L168 Benchmark]: Witness Printer took 77.38 ms. Allocated memory is still 161.5 MB. Free memory was 63.4 MB in the beginning and 60.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:03:35,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 403.71 ms. Allocated memory is still 127.9 MB. Free memory was 95.6 MB in the beginning and 104.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.70 ms. Allocated memory is still 127.9 MB. Free memory was 104.0 MB in the beginning and 102.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.27 ms. Allocated memory is still 127.9 MB. Free memory was 102.3 MB in the beginning and 101.5 MB in the end (delta: 838.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 557.84 ms. Allocated memory is still 127.9 MB. Free memory was 101.1 MB in the beginning and 89.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4735.61 ms. Allocated memory was 127.9 MB in the beginning and 161.5 MB in the end (delta: 33.6 MB). Free memory was 89.3 MB in the beginning and 63.4 MB in the end (delta: 25.9 MB). Peak memory consumption was 61.6 MB. Max. memory is 16.1 GB. * Witness Printer took 77.38 ms. Allocated memory is still 161.5 MB. Free memory was 63.4 MB in the beginning and 60.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 80]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 135 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 55.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4559.8ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2274.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 129.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 160 SDtfs, 339 SDslu, 510 SDs, 0 SdLazy, 587 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 474.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 963.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=317occurred in iteration=3, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 67.4ms SsaConstructionTime, 443.0ms SatisfiabilityAnalysisTime, 1247.5ms InterpolantComputationTime, 539 NumberOfCodeBlocks, 539 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 532 ConstructedInterpolants, 0 QuantifiedInterpolants, 1754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 19:03:35,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e3f88e-2c5b-4a1a-b3b7-44c4a2134593/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...