./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix042.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix042.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y --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 94656be5559ee6994f8d95e82c06571dfbe5b53833c4e842ade3fa022ec89a57 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:32:14,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:32:14,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:32:14,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:32:14,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:32:14,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:32:14,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:32:14,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:32:14,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:32:14,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:32:14,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:32:14,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:32:14,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:32:14,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:32:14,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:32:14,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:32:14,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:32:14,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:32:14,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:32:14,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:32:14,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:32:14,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:32:14,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:32:14,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:32:14,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:32:14,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:32:14,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:32:14,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:32:14,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:32:14,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:32:14,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:32:14,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:32:14,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:32:14,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:32:14,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:32:14,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:32:14,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:32:14,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:32:14,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:32:14,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:32:14,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:32:14,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:32:14,915 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:32:14,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:32:14,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:32:14,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:32:14,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:32:14,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:32:14,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:32:14,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:32:14,919 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:32:14,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:32:14,920 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:32:14,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:32:14,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:32:14,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:32:14,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:32:14,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:32:14,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:32:14,922 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:32:14,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:32:14,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:32:14,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:32:14,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:32:14,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:32:14,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:32:14,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:32:14,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:32:14,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:32:14,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:32:14,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:32:14,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:32:14,926 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:32:14,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:32:14,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:32:14,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:32:14,928 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_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94656be5559ee6994f8d95e82c06571dfbe5b53833c4e842ade3fa022ec89a57 [2021-11-13 17:32:15,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:32:15,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:32:15,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:32:15,263 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:32:15,264 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:32:15,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/pthread-wmm/mix042.opt.i [2021-11-13 17:32:15,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/data/4ba3f8192/d3424c2141e949858832573a2fe38b8f/FLAG033f2df3b [2021-11-13 17:32:15,902 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:32:15,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/sv-benchmarks/c/pthread-wmm/mix042.opt.i [2021-11-13 17:32:15,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/data/4ba3f8192/d3424c2141e949858832573a2fe38b8f/FLAG033f2df3b [2021-11-13 17:32:16,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/data/4ba3f8192/d3424c2141e949858832573a2fe38b8f [2021-11-13 17:32:16,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:32:16,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:32:16,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:32:16,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:32:16,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:32:16,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:16" (1/1) ... [2021-11-13 17:32:16,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d89970b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16, skipping insertion in model container [2021-11-13 17:32:16,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:16" (1/1) ... [2021-11-13 17:32:16,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:32:16,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:32:16,450 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_73fee676-c95b-48ec-80ce-0edf7abbe93c/sv-benchmarks/c/pthread-wmm/mix042.opt.i[944,957] [2021-11-13 17:32:16,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:32:16,635 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:32:16,647 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_73fee676-c95b-48ec-80ce-0edf7abbe93c/sv-benchmarks/c/pthread-wmm/mix042.opt.i[944,957] [2021-11-13 17:32:16,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:32:16,757 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:32:16,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16 WrapperNode [2021-11-13 17:32:16,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:32:16,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:32:16,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:32:16,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:32:16,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16" (1/1) ... [2021-11-13 17:32:16,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16" (1/1) ... [2021-11-13 17:32:16,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:32:16,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:32:16,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:32:16,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:32:16,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16" (1/1) ... [2021-11-13 17:32:16,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16" (1/1) ... [2021-11-13 17:32:16,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16" (1/1) ... [2021-11-13 17:32:16,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16" (1/1) ... [2021-11-13 17:32:16,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16" (1/1) ... [2021-11-13 17:32:16,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16" (1/1) ... [2021-11-13 17:32:16,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16" (1/1) ... [2021-11-13 17:32:16,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:32:16,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:32:16,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:32:16,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:32:16,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16" (1/1) ... [2021-11-13 17:32:16,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:32:16,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:32:16,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:32:16,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:32:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:32:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 17:32:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:32:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:32:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-13 17:32:16,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-13 17:32:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-13 17:32:16,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-13 17:32:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-13 17:32:16,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-13 17:32:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:32:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 17:32:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:32:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:32:16,952 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 17:32:18,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:32:18,221 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 17:32:18,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:18 BoogieIcfgContainer [2021-11-13 17:32:18,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:32:18,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:32:18,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:32:18,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:32:18,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:32:16" (1/3) ... [2021-11-13 17:32:18,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de19023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:32:18, skipping insertion in model container [2021-11-13 17:32:18,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:16" (2/3) ... [2021-11-13 17:32:18,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de19023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:32:18, skipping insertion in model container [2021-11-13 17:32:18,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:18" (3/3) ... [2021-11-13 17:32:18,235 INFO L111 eAbstractionObserver]: Analyzing ICFG mix042.opt.i [2021-11-13 17:32:18,242 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 17:32:18,242 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:32:18,243 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 17:32:18,243 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 17:32:18,283 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,284 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,284 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,284 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,285 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,285 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,285 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,285 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,286 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,286 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,287 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,287 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,287 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,288 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,288 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,289 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,289 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,289 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,290 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,290 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,291 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,291 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,291 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,292 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,292 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,293 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,293 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,294 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,294 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,294 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,295 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,295 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,296 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,296 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,297 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,297 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,297 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,297 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,298 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,298 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,299 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,299 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,299 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,299 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,300 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,300 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,300 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,300 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,301 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,301 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,302 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,302 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,302 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,302 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,303 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,303 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,303 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,303 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,304 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,304 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,304 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,305 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,305 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,305 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,305 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,305 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,306 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,306 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,306 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,307 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,307 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,307 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,315 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,316 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,316 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,316 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,316 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,318 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,318 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,318 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,318 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,319 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,320 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,321 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,322 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,325 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,325 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,326 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,326 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,326 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,327 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,327 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,327 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,328 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,333 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,333 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,333 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,334 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:18,334 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 17:32:18,392 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:32:18,400 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:32:18,400 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 17:32:18,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 118 transitions, 251 flow [2021-11-13 17:32:18,465 INFO L129 PetriNetUnfolder]: 2/115 cut-off events. [2021-11-13 17:32:18,465 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 17:32:18,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 115 events. 2/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2021-11-13 17:32:18,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 118 transitions, 251 flow [2021-11-13 17:32:18,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 115 transitions, 239 flow [2021-11-13 17:32:18,493 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2021-11-13 17:32:18,493 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 17:32:18,494 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:18,494 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] [2021-11-13 17:32:18,495 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2018288398, now seen corresponding path program 1 times [2021-11-13 17:32:18,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:18,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314845902] [2021-11-13 17:32:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:18,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:18,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:18,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314845902] [2021-11-13 17:32:18,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314845902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:18,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:18,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:32:18,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294713284] [2021-11-13 17:32:18,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:18,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:32:18,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:18,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:32:18,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:32:18,897 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 118 [2021-11-13 17:32:18,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 115 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:18,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:18,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 118 [2021-11-13 17:32:18,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:19,040 INFO L129 PetriNetUnfolder]: 17/195 cut-off events. [2021-11-13 17:32:19,041 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-13 17:32:19,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 195 events. 17/195 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 479 event pairs, 3 based on Foata normal form. 9/197 useless extension candidates. Maximal degree in co-relation 193. Up to 27 conditions per place. [2021-11-13 17:32:19,050 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 10 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2021-11-13 17:32:19,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 261 flow [2021-11-13 17:32:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:32:19,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 17:32:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2021-11-13 17:32:19,069 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9378531073446328 [2021-11-13 17:32:19,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2021-11-13 17:32:19,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2021-11-13 17:32:19,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:19,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2021-11-13 17:32:19,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:19,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:19,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:19,089 INFO L186 Difference]: Start difference. First operand has 123 places, 115 transitions, 239 flow. Second operand 3 states and 332 transitions. [2021-11-13 17:32:19,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 261 flow [2021-11-13 17:32:19,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 114 transitions, 258 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-13 17:32:19,098 INFO L242 Difference]: Finished difference. Result has 120 places, 111 transitions, 232 flow [2021-11-13 17:32:19,101 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=120, PETRI_TRANSITIONS=111} [2021-11-13 17:32:19,104 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, -3 predicate places. [2021-11-13 17:32:19,105 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 111 transitions, 232 flow [2021-11-13 17:32:19,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:19,105 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:19,106 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] [2021-11-13 17:32:19,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:32:19,106 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:19,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:19,107 INFO L85 PathProgramCache]: Analyzing trace with hash -742004216, now seen corresponding path program 1 times [2021-11-13 17:32:19,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:19,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73139366] [2021-11-13 17:32:19,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:19,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:19,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:19,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73139366] [2021-11-13 17:32:19,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73139366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:19,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:19,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:32:19,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081534958] [2021-11-13 17:32:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:19,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:32:19,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:19,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:32:19,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:32:19,476 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 118 [2021-11-13 17:32:19,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 111 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 99.83333333333333) internal successors, (599), 6 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:19,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:19,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 118 [2021-11-13 17:32:19,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:19,861 INFO L129 PetriNetUnfolder]: 84/414 cut-off events. [2021-11-13 17:32:19,862 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-11-13 17:32:19,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 414 events. 84/414 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2026 event pairs, 18 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 555. Up to 65 conditions per place. [2021-11-13 17:32:19,870 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 15 selfloop transitions, 2 changer transitions 36/137 dead transitions. [2021-11-13 17:32:19,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 137 transitions, 374 flow [2021-11-13 17:32:19,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:32:19,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 17:32:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 926 transitions. [2021-11-13 17:32:19,877 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.871939736346516 [2021-11-13 17:32:19,877 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 926 transitions. [2021-11-13 17:32:19,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 926 transitions. [2021-11-13 17:32:19,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:19,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 926 transitions. [2021-11-13 17:32:19,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 102.88888888888889) internal successors, (926), 9 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:19,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 118.0) internal successors, (1180), 10 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:19,891 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 118.0) internal successors, (1180), 10 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:19,891 INFO L186 Difference]: Start difference. First operand has 120 places, 111 transitions, 232 flow. Second operand 9 states and 926 transitions. [2021-11-13 17:32:19,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 137 transitions, 374 flow [2021-11-13 17:32:19,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 137 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-13 17:32:19,899 INFO L242 Difference]: Finished difference. Result has 133 places, 99 transitions, 224 flow [2021-11-13 17:32:19,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=224, PETRI_PLACES=133, PETRI_TRANSITIONS=99} [2021-11-13 17:32:19,901 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 10 predicate places. [2021-11-13 17:32:19,903 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 99 transitions, 224 flow [2021-11-13 17:32:19,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.83333333333333) internal successors, (599), 6 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:19,907 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:19,907 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:19,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:32:19,908 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:19,909 INFO L85 PathProgramCache]: Analyzing trace with hash 613859141, now seen corresponding path program 1 times [2021-11-13 17:32:19,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:19,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726659174] [2021-11-13 17:32:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:19,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:20,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:20,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726659174] [2021-11-13 17:32:20,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726659174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:20,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:20,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 17:32:20,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039375781] [2021-11-13 17:32:20,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:20,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:32:20,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:20,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:32:20,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:32:20,367 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 118 [2021-11-13 17:32:20,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 99 transitions, 224 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:20,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:20,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 118 [2021-11-13 17:32:20,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:20,706 INFO L129 PetriNetUnfolder]: 66/277 cut-off events. [2021-11-13 17:32:20,706 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2021-11-13 17:32:20,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 277 events. 66/277 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 968 event pairs, 24 based on Foata normal form. 6/276 useless extension candidates. Maximal degree in co-relation 468. Up to 85 conditions per place. [2021-11-13 17:32:20,710 INFO L132 encePairwiseOnDemand]: 106/118 looper letters, 17 selfloop transitions, 9 changer transitions 22/128 dead transitions. [2021-11-13 17:32:20,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 128 transitions, 398 flow [2021-11-13 17:32:20,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:32:20,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-13 17:32:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1366 transitions. [2021-11-13 17:32:20,716 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8268765133171913 [2021-11-13 17:32:20,716 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1366 transitions. [2021-11-13 17:32:20,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1366 transitions. [2021-11-13 17:32:20,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:20,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1366 transitions. [2021-11-13 17:32:20,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 97.57142857142857) internal successors, (1366), 14 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:20,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 118.0) internal successors, (1770), 15 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:20,730 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 118.0) internal successors, (1770), 15 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:20,730 INFO L186 Difference]: Start difference. First operand has 133 places, 99 transitions, 224 flow. Second operand 14 states and 1366 transitions. [2021-11-13 17:32:20,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 128 transitions, 398 flow [2021-11-13 17:32:20,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 128 transitions, 366 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-11-13 17:32:20,738 INFO L242 Difference]: Finished difference. Result has 128 places, 103 transitions, 266 flow [2021-11-13 17:32:20,738 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=266, PETRI_PLACES=128, PETRI_TRANSITIONS=103} [2021-11-13 17:32:20,739 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 5 predicate places. [2021-11-13 17:32:20,739 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 103 transitions, 266 flow [2021-11-13 17:32:20,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:20,740 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:20,740 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:20,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:32:20,741 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:20,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:20,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1275380348, now seen corresponding path program 1 times [2021-11-13 17:32:20,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:20,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639483021] [2021-11-13 17:32:20,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:20,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:20,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:20,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639483021] [2021-11-13 17:32:20,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639483021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:20,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:20,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:32:20,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203395807] [2021-11-13 17:32:20,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:20,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:32:20,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:20,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:32:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:32:20,939 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 118 [2021-11-13 17:32:20,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 103 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:20,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:20,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 118 [2021-11-13 17:32:20,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:21,416 INFO L129 PetriNetUnfolder]: 552/1258 cut-off events. [2021-11-13 17:32:21,416 INFO L130 PetriNetUnfolder]: For 992/992 co-relation queries the response was YES. [2021-11-13 17:32:21,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2817 conditions, 1258 events. 552/1258 cut-off events. For 992/992 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8081 event pairs, 21 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 2750. Up to 377 conditions per place. [2021-11-13 17:32:21,429 INFO L132 encePairwiseOnDemand]: 108/118 looper letters, 37 selfloop transitions, 7 changer transitions 44/170 dead transitions. [2021-11-13 17:32:21,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 170 transitions, 699 flow [2021-11-13 17:32:21,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 17:32:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-13 17:32:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1024 transitions. [2021-11-13 17:32:21,434 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8677966101694915 [2021-11-13 17:32:21,434 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1024 transitions. [2021-11-13 17:32:21,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1024 transitions. [2021-11-13 17:32:21,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:21,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1024 transitions. [2021-11-13 17:32:21,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 102.4) internal successors, (1024), 10 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:21,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 118.0) internal successors, (1298), 11 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:21,443 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 118.0) internal successors, (1298), 11 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:21,443 INFO L186 Difference]: Start difference. First operand has 128 places, 103 transitions, 266 flow. Second operand 10 states and 1024 transitions. [2021-11-13 17:32:21,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 170 transitions, 699 flow [2021-11-13 17:32:21,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 170 transitions, 685 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-11-13 17:32:21,451 INFO L242 Difference]: Finished difference. Result has 130 places, 107 transitions, 314 flow [2021-11-13 17:32:21,451 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=314, PETRI_PLACES=130, PETRI_TRANSITIONS=107} [2021-11-13 17:32:21,452 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 7 predicate places. [2021-11-13 17:32:21,452 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 314 flow [2021-11-13 17:32:21,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:21,453 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:21,453 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:21,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:32:21,454 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:21,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:21,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1184342435, now seen corresponding path program 1 times [2021-11-13 17:32:21,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:21,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227441258] [2021-11-13 17:32:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:21,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:21,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:21,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227441258] [2021-11-13 17:32:21,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227441258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:21,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:21,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:32:21,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391308769] [2021-11-13 17:32:21,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:21,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:32:21,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:21,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:32:21,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:32:21,602 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 118 [2021-11-13 17:32:21,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 107 transitions, 314 flow. Second operand has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:21,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:21,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 118 [2021-11-13 17:32:21,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:22,048 INFO L129 PetriNetUnfolder]: 273/813 cut-off events. [2021-11-13 17:32:22,048 INFO L130 PetriNetUnfolder]: For 1307/1313 co-relation queries the response was YES. [2021-11-13 17:32:22,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 813 events. 273/813 cut-off events. For 1307/1313 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5024 event pairs, 12 based on Foata normal form. 22/832 useless extension candidates. Maximal degree in co-relation 2305. Up to 208 conditions per place. [2021-11-13 17:32:22,057 INFO L132 encePairwiseOnDemand]: 108/118 looper letters, 44 selfloop transitions, 18 changer transitions 26/170 dead transitions. [2021-11-13 17:32:22,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 170 transitions, 872 flow [2021-11-13 17:32:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:32:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-13 17:32:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1127 transitions. [2021-11-13 17:32:22,063 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8682588597842835 [2021-11-13 17:32:22,063 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1127 transitions. [2021-11-13 17:32:22,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1127 transitions. [2021-11-13 17:32:22,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:22,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1127 transitions. [2021-11-13 17:32:22,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 102.45454545454545) internal successors, (1127), 11 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:22,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:22,072 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:22,073 INFO L186 Difference]: Start difference. First operand has 130 places, 107 transitions, 314 flow. Second operand 11 states and 1127 transitions. [2021-11-13 17:32:22,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 170 transitions, 872 flow [2021-11-13 17:32:22,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 170 transitions, 856 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-11-13 17:32:22,084 INFO L242 Difference]: Finished difference. Result has 138 places, 122 transitions, 491 flow [2021-11-13 17:32:22,085 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=491, PETRI_PLACES=138, PETRI_TRANSITIONS=122} [2021-11-13 17:32:22,087 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 15 predicate places. [2021-11-13 17:32:22,087 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 122 transitions, 491 flow [2021-11-13 17:32:22,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:22,088 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:22,089 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:22,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:32:22,089 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:22,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:22,090 INFO L85 PathProgramCache]: Analyzing trace with hash -20321001, now seen corresponding path program 1 times [2021-11-13 17:32:22,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:22,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432319804] [2021-11-13 17:32:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:22,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:22,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:22,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432319804] [2021-11-13 17:32:22,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432319804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:22,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:22,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:32:22,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557920883] [2021-11-13 17:32:22,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:22,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:32:22,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:22,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:32:22,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:32:22,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 118 [2021-11-13 17:32:22,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 122 transitions, 491 flow. Second operand has 7 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:22,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:22,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 118 [2021-11-13 17:32:22,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:22,725 INFO L129 PetriNetUnfolder]: 174/969 cut-off events. [2021-11-13 17:32:22,725 INFO L130 PetriNetUnfolder]: For 1928/2089 co-relation queries the response was YES. [2021-11-13 17:32:22,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2802 conditions, 969 events. 174/969 cut-off events. For 1928/2089 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7405 event pairs, 7 based on Foata normal form. 10/941 useless extension candidates. Maximal degree in co-relation 2727. Up to 245 conditions per place. [2021-11-13 17:32:22,737 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 40 selfloop transitions, 5 changer transitions 6/154 dead transitions. [2021-11-13 17:32:22,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 154 transitions, 737 flow [2021-11-13 17:32:22,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:32:22,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:32:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 719 transitions. [2021-11-13 17:32:22,742 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8704600484261501 [2021-11-13 17:32:22,742 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 719 transitions. [2021-11-13 17:32:22,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 719 transitions. [2021-11-13 17:32:22,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:22,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 719 transitions. [2021-11-13 17:32:22,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.71428571428571) internal successors, (719), 7 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:22,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:22,750 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:22,750 INFO L186 Difference]: Start difference. First operand has 138 places, 122 transitions, 491 flow. Second operand 7 states and 719 transitions. [2021-11-13 17:32:22,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 154 transitions, 737 flow [2021-11-13 17:32:22,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 154 transitions, 683 flow, removed 24 selfloop flow, removed 2 redundant places. [2021-11-13 17:32:22,772 INFO L242 Difference]: Finished difference. Result has 147 places, 126 transitions, 482 flow [2021-11-13 17:32:22,776 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=482, PETRI_PLACES=147, PETRI_TRANSITIONS=126} [2021-11-13 17:32:22,779 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 24 predicate places. [2021-11-13 17:32:22,779 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 126 transitions, 482 flow [2021-11-13 17:32:22,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:22,780 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:22,780 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:22,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:32:22,781 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:22,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:22,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1109212711, now seen corresponding path program 2 times [2021-11-13 17:32:22,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:22,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180138375] [2021-11-13 17:32:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:22,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:22,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:22,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180138375] [2021-11-13 17:32:22,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180138375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:22,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:22,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:32:22,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591946611] [2021-11-13 17:32:22,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:22,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:32:22,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:22,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:32:22,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:32:22,958 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 118 [2021-11-13 17:32:22,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 126 transitions, 482 flow. Second operand 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) [2021-11-13 17:32:22,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:22,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 118 [2021-11-13 17:32:22,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:23,510 INFO L129 PetriNetUnfolder]: 386/1207 cut-off events. [2021-11-13 17:32:23,511 INFO L130 PetriNetUnfolder]: For 2401/2458 co-relation queries the response was YES. [2021-11-13 17:32:23,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3741 conditions, 1207 events. 386/1207 cut-off events. For 2401/2458 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9026 event pairs, 32 based on Foata normal form. 43/1229 useless extension candidates. Maximal degree in co-relation 3708. Up to 138 conditions per place. [2021-11-13 17:32:23,521 INFO L132 encePairwiseOnDemand]: 108/118 looper letters, 31 selfloop transitions, 22 changer transitions 37/173 dead transitions. [2021-11-13 17:32:23,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 173 transitions, 943 flow [2021-11-13 17:32:23,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:32:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-13 17:32:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1403 transitions. [2021-11-13 17:32:23,527 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8492736077481841 [2021-11-13 17:32:23,527 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1403 transitions. [2021-11-13 17:32:23,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1403 transitions. [2021-11-13 17:32:23,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:23,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1403 transitions. [2021-11-13 17:32:23,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 100.21428571428571) internal successors, (1403), 14 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:23,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 118.0) internal successors, (1770), 15 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:23,539 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 118.0) internal successors, (1770), 15 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:23,539 INFO L186 Difference]: Start difference. First operand has 147 places, 126 transitions, 482 flow. Second operand 14 states and 1403 transitions. [2021-11-13 17:32:23,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 173 transitions, 943 flow [2021-11-13 17:32:23,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 173 transitions, 858 flow, removed 41 selfloop flow, removed 5 redundant places. [2021-11-13 17:32:23,561 INFO L242 Difference]: Finished difference. Result has 162 places, 124 transitions, 515 flow [2021-11-13 17:32:23,562 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=515, PETRI_PLACES=162, PETRI_TRANSITIONS=124} [2021-11-13 17:32:23,562 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 39 predicate places. [2021-11-13 17:32:23,562 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 124 transitions, 515 flow [2021-11-13 17:32:23,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-11-13 17:32:23,564 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:23,564 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:23,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:32:23,565 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:23,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:23,565 INFO L85 PathProgramCache]: Analyzing trace with hash 227100970, now seen corresponding path program 1 times [2021-11-13 17:32:23,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:23,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145927532] [2021-11-13 17:32:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:23,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:23,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:23,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145927532] [2021-11-13 17:32:23,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145927532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:23,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:23,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:32:23,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56259988] [2021-11-13 17:32:23,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:23,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:32:23,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:23,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:32:23,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:32:23,725 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 118 [2021-11-13 17:32:23,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 124 transitions, 515 flow. Second operand has 7 states, 7 states have (on average 98.42857142857143) internal successors, (689), 7 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:23,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:23,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 118 [2021-11-13 17:32:23,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:24,137 INFO L129 PetriNetUnfolder]: 205/1287 cut-off events. [2021-11-13 17:32:24,137 INFO L130 PetriNetUnfolder]: For 2775/2986 co-relation queries the response was YES. [2021-11-13 17:32:24,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3629 conditions, 1287 events. 205/1287 cut-off events. For 2775/2986 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 12167 event pairs, 11 based on Foata normal form. 3/1206 useless extension candidates. Maximal degree in co-relation 3598. Up to 181 conditions per place. [2021-11-13 17:32:24,150 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 18 selfloop transitions, 1 changer transitions 17/139 dead transitions. [2021-11-13 17:32:24,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 139 transitions, 641 flow [2021-11-13 17:32:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:32:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:32:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 703 transitions. [2021-11-13 17:32:24,153 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.851089588377724 [2021-11-13 17:32:24,153 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 703 transitions. [2021-11-13 17:32:24,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 703 transitions. [2021-11-13 17:32:24,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:24,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 703 transitions. [2021-11-13 17:32:24,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.42857142857143) internal successors, (703), 7 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:24,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:24,160 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:24,160 INFO L186 Difference]: Start difference. First operand has 162 places, 124 transitions, 515 flow. Second operand 7 states and 703 transitions. [2021-11-13 17:32:24,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 139 transitions, 641 flow [2021-11-13 17:32:24,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 139 transitions, 559 flow, removed 23 selfloop flow, removed 16 redundant places. [2021-11-13 17:32:24,191 INFO L242 Difference]: Finished difference. Result has 151 places, 121 transitions, 435 flow [2021-11-13 17:32:24,191 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=435, PETRI_PLACES=151, PETRI_TRANSITIONS=121} [2021-11-13 17:32:24,194 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 28 predicate places. [2021-11-13 17:32:24,194 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 121 transitions, 435 flow [2021-11-13 17:32:24,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.42857142857143) internal successors, (689), 7 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:24,195 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:24,195 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:24,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:32:24,195 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:24,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:24,196 INFO L85 PathProgramCache]: Analyzing trace with hash 846321230, now seen corresponding path program 2 times [2021-11-13 17:32:24,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:24,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723752393] [2021-11-13 17:32:24,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:24,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:32:24,273 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:32:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:32:24,442 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:32:24,443 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:32:24,444 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-13 17:32:24,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-13 17:32:24,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-11-13 17:32:24,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-11-13 17:32:24,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 6 remaining) [2021-11-13 17:32:24,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-13 17:32:24,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:32:24,453 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2021-11-13 17:32:24,459 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 17:32:24,459 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:32:24,585 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:32:24,590 INFO L158 Benchmark]: Toolchain (without parser) took 8436.16ms. Allocated memory was 119.5MB in the beginning and 211.8MB in the end (delta: 92.3MB). Free memory was 84.1MB in the beginning and 72.2MB in the end (delta: 11.9MB). Peak memory consumption was 102.8MB. Max. memory is 16.1GB. [2021-11-13 17:32:24,594 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 73.4MB. Free memory was 47.0MB in the beginning and 47.0MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:32:24,597 INFO L158 Benchmark]: CACSL2BoogieTranslator took 603.67ms. Allocated memory is still 119.5MB. Free memory was 83.9MB in the beginning and 83.2MB in the end (delta: 681.9kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:32:24,597 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.75ms. Allocated memory is still 119.5MB. Free memory was 83.2MB in the beginning and 80.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:32:24,597 INFO L158 Benchmark]: Boogie Preprocessor took 36.89ms. Allocated memory is still 119.5MB. Free memory was 80.4MB in the beginning and 78.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:32:24,598 INFO L158 Benchmark]: RCFGBuilder took 1366.83ms. Allocated memory is still 119.5MB. Free memory was 78.3MB in the beginning and 70.6MB in the end (delta: 7.6MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2021-11-13 17:32:24,598 INFO L158 Benchmark]: TraceAbstraction took 6362.07ms. Allocated memory was 119.5MB in the beginning and 211.8MB in the end (delta: 92.3MB). Free memory was 70.6MB in the beginning and 72.2MB in the end (delta: -1.5MB). Peak memory consumption was 91.4MB. Max. memory is 16.1GB. [2021-11-13 17:32:24,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 73.4MB. Free memory was 47.0MB in the beginning and 47.0MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 603.67ms. Allocated memory is still 119.5MB. Free memory was 83.9MB in the beginning and 83.2MB in the end (delta: 681.9kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.75ms. Allocated memory is still 119.5MB. Free memory was 83.2MB in the beginning and 80.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.89ms. Allocated memory is still 119.5MB. Free memory was 80.4MB in the beginning and 78.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1366.83ms. Allocated memory is still 119.5MB. Free memory was 78.3MB in the beginning and 70.6MB in the end (delta: 7.6MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6362.07ms. Allocated memory was 119.5MB in the beginning and 211.8MB in the end (delta: 92.3MB). Free memory was 70.6MB in the beginning and 72.2MB in the end (delta: -1.5MB). Peak memory consumption was 91.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:32:24,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix042.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y --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 94656be5559ee6994f8d95e82c06571dfbe5b53833c4e842ade3fa022ec89a57 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:32:27,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:32:27,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:32:27,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:32:27,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:32:27,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:32:27,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:32:27,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:32:27,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:32:27,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:32:27,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:32:27,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:32:27,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:32:27,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:32:27,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:32:27,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:32:27,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:32:27,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:32:27,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:32:27,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:32:27,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:32:27,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:32:27,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:32:27,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:32:27,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:32:27,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:32:27,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:32:27,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:32:27,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:32:27,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:32:27,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:32:27,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:32:27,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:32:27,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:32:27,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:32:27,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:32:27,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:32:27,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:32:27,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:32:27,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:32:27,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:32:27,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 17:32:27,355 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:32:27,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:32:27,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:32:27,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:32:27,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:32:27,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:32:27,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:32:27,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:32:27,359 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:32:27,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:32:27,360 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:32:27,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:32:27,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:32:27,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:32:27,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:32:27,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:32:27,361 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:32:27,361 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:32:27,361 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:32:27,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:32:27,362 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:32:27,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:32:27,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:32:27,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:32:27,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:32:27,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:32:27,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:32:27,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:32:27,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:32:27,364 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:32:27,364 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:32:27,364 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:32:27,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:32:27,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:32:27,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:32:27,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:32:27,365 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94656be5559ee6994f8d95e82c06571dfbe5b53833c4e842ade3fa022ec89a57 [2021-11-13 17:32:27,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:32:27,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:32:27,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:32:27,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:32:27,764 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:32:27,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/pthread-wmm/mix042.opt.i [2021-11-13 17:32:27,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/data/9aeff6f8e/99cd98f255f04f2c9e852116faae427a/FLAGc5456beab [2021-11-13 17:32:28,485 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:32:28,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/sv-benchmarks/c/pthread-wmm/mix042.opt.i [2021-11-13 17:32:28,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/data/9aeff6f8e/99cd98f255f04f2c9e852116faae427a/FLAGc5456beab [2021-11-13 17:32:28,705 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/data/9aeff6f8e/99cd98f255f04f2c9e852116faae427a [2021-11-13 17:32:28,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:32:28,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:32:28,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:32:28,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:32:28,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:32:28,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:28" (1/1) ... [2021-11-13 17:32:28,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa9844d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:28, skipping insertion in model container [2021-11-13 17:32:28,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:28" (1/1) ... [2021-11-13 17:32:28,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:32:28,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:32:29,057 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_73fee676-c95b-48ec-80ce-0edf7abbe93c/sv-benchmarks/c/pthread-wmm/mix042.opt.i[944,957] [2021-11-13 17:32:29,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:32:29,337 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:32:29,351 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_73fee676-c95b-48ec-80ce-0edf7abbe93c/sv-benchmarks/c/pthread-wmm/mix042.opt.i[944,957] [2021-11-13 17:32:29,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:32:29,488 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:32:29,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:29 WrapperNode [2021-11-13 17:32:29,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:32:29,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:32:29,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:32:29,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:32:29,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:29" (1/1) ... [2021-11-13 17:32:29,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:29" (1/1) ... [2021-11-13 17:32:29,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:32:29,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:32:29,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:32:29,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:32:29,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:29" (1/1) ... [2021-11-13 17:32:29,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:29" (1/1) ... [2021-11-13 17:32:29,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:29" (1/1) ... [2021-11-13 17:32:29,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:29" (1/1) ... [2021-11-13 17:32:29,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:29" (1/1) ... [2021-11-13 17:32:29,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:29" (1/1) ... [2021-11-13 17:32:29,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:29" (1/1) ... [2021-11-13 17:32:29,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:32:29,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:32:29,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:32:29,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:32:29,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:29" (1/1) ... [2021-11-13 17:32:29,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:32:29,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:32:29,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:32:29,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:32:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 17:32:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:32:29,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:32:29,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:32:29,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:32:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-13 17:32:29,774 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-13 17:32:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-13 17:32:29,774 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-13 17:32:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-13 17:32:29,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-13 17:32:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 17:32:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:32:29,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:32:29,777 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 17:32:31,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:32:31,003 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 17:32:31,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:31 BoogieIcfgContainer [2021-11-13 17:32:31,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:32:31,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:32:31,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:32:31,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:32:31,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:32:28" (1/3) ... [2021-11-13 17:32:31,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffcaead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:32:31, skipping insertion in model container [2021-11-13 17:32:31,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:29" (2/3) ... [2021-11-13 17:32:31,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffcaead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:32:31, skipping insertion in model container [2021-11-13 17:32:31,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:31" (3/3) ... [2021-11-13 17:32:31,016 INFO L111 eAbstractionObserver]: Analyzing ICFG mix042.opt.i [2021-11-13 17:32:31,029 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 17:32:31,030 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:32:31,030 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 17:32:31,030 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 17:32:31,070 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,070 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,071 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,071 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,071 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,071 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,071 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,071 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,072 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,072 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,072 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,073 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,073 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,074 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,074 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,074 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,074 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,075 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,075 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,075 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,076 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,076 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,077 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,077 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,078 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,078 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,078 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,078 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,079 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,079 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,079 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,079 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,080 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,080 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,081 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,081 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,081 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,082 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,082 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,082 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,082 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,083 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,083 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,083 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,083 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,083 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,084 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,084 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,084 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,085 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,085 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,085 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,085 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,085 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,086 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,086 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,086 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,086 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,087 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,087 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,087 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,089 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,089 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,089 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,090 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,091 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,095 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,095 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,095 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,095 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,096 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,096 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,097 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,097 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,097 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,098 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,099 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,102 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,102 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,102 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,103 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,103 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,104 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,104 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,104 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,105 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,110 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,110 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,111 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,111 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,111 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,111 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:31,112 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 17:32:31,171 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:32:31,178 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:32:31,179 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 17:32:31,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 253 flow [2021-11-13 17:32:31,245 INFO L129 PetriNetUnfolder]: 2/116 cut-off events. [2021-11-13 17:32:31,246 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 17:32:31,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 116 events. 2/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2021-11-13 17:32:31,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 253 flow [2021-11-13 17:32:31,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 116 transitions, 241 flow [2021-11-13 17:32:31,292 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2021-11-13 17:32:31,292 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 17:32:31,292 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:31,293 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] [2021-11-13 17:32:31,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:31,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1997427370, now seen corresponding path program 1 times [2021-11-13 17:32:31,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:31,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728854145] [2021-11-13 17:32:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:31,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:31,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:31,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:31,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:32:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:31,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:32:31,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:31,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:31,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:31,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728854145] [2021-11-13 17:32:31,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728854145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:31,955 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:31,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:32:31,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722046616] [2021-11-13 17:32:31,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:31,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:32:31,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:32,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:32:32,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:32:32,011 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 119 [2021-11-13 17:32:32,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 116 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:32,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:32,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 119 [2021-11-13 17:32:32,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:32,177 INFO L129 PetriNetUnfolder]: 17/250 cut-off events. [2021-11-13 17:32:32,177 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-13 17:32:32,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 250 events. 17/250 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 770 event pairs, 7 based on Foata normal form. 9/248 useless extension candidates. Maximal degree in co-relation 247. Up to 27 conditions per place. [2021-11-13 17:32:32,182 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 10 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2021-11-13 17:32:32,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 115 transitions, 263 flow [2021-11-13 17:32:32,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:32:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 17:32:32,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2021-11-13 17:32:32,197 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.938375350140056 [2021-11-13 17:32:32,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2021-11-13 17:32:32,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2021-11-13 17:32:32,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:32,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2021-11-13 17:32:32,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:32,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:32,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:32,216 INFO L186 Difference]: Start difference. First operand has 124 places, 116 transitions, 241 flow. Second operand 3 states and 335 transitions. [2021-11-13 17:32:32,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 115 transitions, 263 flow [2021-11-13 17:32:32,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 115 transitions, 260 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-13 17:32:32,224 INFO L242 Difference]: Finished difference. Result has 121 places, 112 transitions, 234 flow [2021-11-13 17:32:32,226 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2021-11-13 17:32:32,230 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, -3 predicate places. [2021-11-13 17:32:32,230 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 234 flow [2021-11-13 17:32:32,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:32,231 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:32,231 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] [2021-11-13 17:32:32,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:32,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:32,444 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:32,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:32,445 INFO L85 PathProgramCache]: Analyzing trace with hash 887150692, now seen corresponding path program 1 times [2021-11-13 17:32:32,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:32,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752533223] [2021-11-13 17:32:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:32,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:32,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:32,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:32,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:32:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:32,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:32:32,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:32,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:33,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:33,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752533223] [2021-11-13 17:32:33,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752533223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:33,102 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:33,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-13 17:32:33,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269186724] [2021-11-13 17:32:33,102 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:33,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:32:33,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:33,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:32:33,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:32:33,109 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 119 [2021-11-13 17:32:33,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 98.57142857142857) internal successors, (690), 7 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:33,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:33,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 119 [2021-11-13 17:32:33,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:33,644 INFO L129 PetriNetUnfolder]: 302/848 cut-off events. [2021-11-13 17:32:33,645 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2021-11-13 17:32:33,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 848 events. 302/848 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4740 event pairs, 10 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 1371. Up to 92 conditions per place. [2021-11-13 17:32:33,656 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 30 selfloop transitions, 9 changer transitions 57/189 dead transitions. [2021-11-13 17:32:33,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 189 transitions, 606 flow [2021-11-13 17:32:33,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 17:32:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-13 17:32:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1347 transitions. [2021-11-13 17:32:33,670 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8707175177763413 [2021-11-13 17:32:33,671 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1347 transitions. [2021-11-13 17:32:33,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1347 transitions. [2021-11-13 17:32:33,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:33,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1347 transitions. [2021-11-13 17:32:33,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.61538461538461) internal successors, (1347), 13 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:33,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 119.0) internal successors, (1666), 14 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:33,688 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 119.0) internal successors, (1666), 14 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:33,688 INFO L186 Difference]: Start difference. First operand has 121 places, 112 transitions, 234 flow. Second operand 13 states and 1347 transitions. [2021-11-13 17:32:33,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 189 transitions, 606 flow [2021-11-13 17:32:33,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 189 transitions, 582 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-13 17:32:33,697 INFO L242 Difference]: Finished difference. Result has 140 places, 117 transitions, 326 flow [2021-11-13 17:32:33,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=326, PETRI_PLACES=140, PETRI_TRANSITIONS=117} [2021-11-13 17:32:33,698 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 16 predicate places. [2021-11-13 17:32:33,699 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 117 transitions, 326 flow [2021-11-13 17:32:33,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.57142857142857) internal successors, (690), 7 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:33,701 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:33,701 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:33,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:33,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:33,914 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:33,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:33,915 INFO L85 PathProgramCache]: Analyzing trace with hash -139194991, now seen corresponding path program 1 times [2021-11-13 17:32:33,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:33,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227468135] [2021-11-13 17:32:33,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:33,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:33,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:33,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:33,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:32:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:34,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:32:34,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:34,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:34,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:34,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227468135] [2021-11-13 17:32:34,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227468135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:34,645 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:34,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-11-13 17:32:34,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186736695] [2021-11-13 17:32:34,645 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:34,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 17:32:34,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:34,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 17:32:34,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:32:34,653 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 119 [2021-11-13 17:32:34,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 117 transitions, 326 flow. Second operand has 11 states, 11 states have (on average 98.18181818181819) internal successors, (1080), 11 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:34,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:34,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 119 [2021-11-13 17:32:34,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:35,040 INFO L129 PetriNetUnfolder]: 54/270 cut-off events. [2021-11-13 17:32:35,041 INFO L130 PetriNetUnfolder]: For 372/372 co-relation queries the response was YES. [2021-11-13 17:32:35,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 270 events. 54/270 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 876 event pairs, 3 based on Foata normal form. 7/274 useless extension candidates. Maximal degree in co-relation 598. Up to 39 conditions per place. [2021-11-13 17:32:35,043 INFO L132 encePairwiseOnDemand]: 110/119 looper letters, 21 selfloop transitions, 12 changer transitions 31/145 dead transitions. [2021-11-13 17:32:35,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 145 transitions, 591 flow [2021-11-13 17:32:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:32:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-13 17:32:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1206 transitions. [2021-11-13 17:32:35,049 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8445378151260504 [2021-11-13 17:32:35,049 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1206 transitions. [2021-11-13 17:32:35,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1206 transitions. [2021-11-13 17:32:35,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:35,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1206 transitions. [2021-11-13 17:32:35,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 100.5) internal successors, (1206), 12 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:35,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:35,059 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:35,059 INFO L186 Difference]: Start difference. First operand has 140 places, 117 transitions, 326 flow. Second operand 12 states and 1206 transitions. [2021-11-13 17:32:35,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 145 transitions, 591 flow [2021-11-13 17:32:35,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 145 transitions, 505 flow, removed 38 selfloop flow, removed 7 redundant places. [2021-11-13 17:32:35,067 INFO L242 Difference]: Finished difference. Result has 142 places, 105 transitions, 312 flow [2021-11-13 17:32:35,068 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=312, PETRI_PLACES=142, PETRI_TRANSITIONS=105} [2021-11-13 17:32:35,069 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 18 predicate places. [2021-11-13 17:32:35,069 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 105 transitions, 312 flow [2021-11-13 17:32:35,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 98.18181818181819) internal successors, (1080), 11 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:35,070 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:35,070 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:35,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:35,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:35,284 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash 746431354, now seen corresponding path program 1 times [2021-11-13 17:32:35,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:35,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834053739] [2021-11-13 17:32:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:35,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:35,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:35,287 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:35,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:32:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:35,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:32:35,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:35,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:36,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:36,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834053739] [2021-11-13 17:32:36,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834053739] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:36,021 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:36,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-13 17:32:36,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552051665] [2021-11-13 17:32:36,022 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:36,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 17:32:36,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:36,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 17:32:36,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:32:36,027 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 119 [2021-11-13 17:32:36,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 105 transitions, 312 flow. Second operand has 12 states, 12 states have (on average 99.5) internal successors, (1194), 12 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:36,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:36,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 119 [2021-11-13 17:32:36,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:36,248 INFO L129 PetriNetUnfolder]: 33/259 cut-off events. [2021-11-13 17:32:36,249 INFO L130 PetriNetUnfolder]: For 165/177 co-relation queries the response was YES. [2021-11-13 17:32:36,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 259 events. 33/259 cut-off events. For 165/177 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 834 event pairs, 6 based on Foata normal form. 1/256 useless extension candidates. Maximal degree in co-relation 467. Up to 31 conditions per place. [2021-11-13 17:32:36,252 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 18 selfloop transitions, 1 changer transitions 11/118 dead transitions. [2021-11-13 17:32:36,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 118 transitions, 402 flow [2021-11-13 17:32:36,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:32:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:32:36,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 710 transitions. [2021-11-13 17:32:36,255 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8523409363745498 [2021-11-13 17:32:36,255 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 710 transitions. [2021-11-13 17:32:36,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 710 transitions. [2021-11-13 17:32:36,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:36,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 710 transitions. [2021-11-13 17:32:36,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 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) [2021-11-13 17:32:36,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 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) [2021-11-13 17:32:36,262 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 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) [2021-11-13 17:32:36,262 INFO L186 Difference]: Start difference. First operand has 142 places, 105 transitions, 312 flow. Second operand 7 states and 710 transitions. [2021-11-13 17:32:36,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 118 transitions, 402 flow [2021-11-13 17:32:36,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 327 flow, removed 19 selfloop flow, removed 15 redundant places. [2021-11-13 17:32:36,269 INFO L242 Difference]: Finished difference. Result has 122 places, 105 transitions, 250 flow [2021-11-13 17:32:36,269 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=250, PETRI_PLACES=122, PETRI_TRANSITIONS=105} [2021-11-13 17:32:36,270 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, -2 predicate places. [2021-11-13 17:32:36,270 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 105 transitions, 250 flow [2021-11-13 17:32:36,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 99.5) internal successors, (1194), 12 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:36,271 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:36,272 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:36,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:36,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:36,482 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:36,483 INFO L85 PathProgramCache]: Analyzing trace with hash -231339242, now seen corresponding path program 2 times [2021-11-13 17:32:36,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:36,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363794546] [2021-11-13 17:32:36,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:32:36,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:36,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:36,485 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:36,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:32:36,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 17:32:36,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:32:36,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:32:36,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:36,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:37,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:37,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363794546] [2021-11-13 17:32:37,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363794546] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:37,124 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:37,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-13 17:32:37,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357631707] [2021-11-13 17:32:37,124 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:37,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 17:32:37,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:37,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 17:32:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:32:37,128 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 119 [2021-11-13 17:32:37,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 105 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 99.41666666666667) internal successors, (1193), 12 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:37,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:37,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 119 [2021-11-13 17:32:37,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:37,343 INFO L129 PetriNetUnfolder]: 44/318 cut-off events. [2021-11-13 17:32:37,343 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-11-13 17:32:37,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 318 events. 44/318 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1295 event pairs, 9 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 486. Up to 36 conditions per place. [2021-11-13 17:32:37,346 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 17 selfloop transitions, 1 changer transitions 12/118 dead transitions. [2021-11-13 17:32:37,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 118 transitions, 346 flow [2021-11-13 17:32:37,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:32:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:32:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 710 transitions. [2021-11-13 17:32:37,349 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8523409363745498 [2021-11-13 17:32:37,349 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 710 transitions. [2021-11-13 17:32:37,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 710 transitions. [2021-11-13 17:32:37,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:37,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 710 transitions. [2021-11-13 17:32:37,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 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) [2021-11-13 17:32:37,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 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) [2021-11-13 17:32:37,356 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 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) [2021-11-13 17:32:37,356 INFO L186 Difference]: Start difference. First operand has 122 places, 105 transitions, 250 flow. Second operand 7 states and 710 transitions. [2021-11-13 17:32:37,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 118 transitions, 346 flow [2021-11-13 17:32:37,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 118 transitions, 331 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-11-13 17:32:37,361 INFO L242 Difference]: Finished difference. Result has 124 places, 105 transitions, 254 flow [2021-11-13 17:32:37,361 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=254, PETRI_PLACES=124, PETRI_TRANSITIONS=105} [2021-11-13 17:32:37,365 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 0 predicate places. [2021-11-13 17:32:37,369 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 105 transitions, 254 flow [2021-11-13 17:32:37,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 99.41666666666667) internal successors, (1193), 12 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:37,370 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:37,370 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:37,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-13 17:32:37,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:37,586 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:37,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1886783014, now seen corresponding path program 3 times [2021-11-13 17:32:37,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:37,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196968333] [2021-11-13 17:32:37,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:32:37,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:37,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:37,589 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:37,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:32:37,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-13 17:32:37,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:32:37,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 17:32:37,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:38,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:40,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:40,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196968333] [2021-11-13 17:32:40,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196968333] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:40,303 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:40,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 20 [2021-11-13 17:32:40,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108278630] [2021-11-13 17:32:40,304 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:40,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 17:32:40,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:40,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 17:32:40,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-11-13 17:32:40,308 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2021-11-13 17:32:40,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 105 transitions, 254 flow. Second operand has 20 states, 20 states have (on average 92.65) internal successors, (1853), 20 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:40,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:40,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2021-11-13 17:32:40,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:40,592 INFO L129 PetriNetUnfolder]: 25/245 cut-off events. [2021-11-13 17:32:40,592 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-11-13 17:32:40,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 245 events. 25/245 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 801 event pairs, 4 based on Foata normal form. 1/238 useless extension candidates. Maximal degree in co-relation 377. Up to 22 conditions per place. [2021-11-13 17:32:40,594 INFO L132 encePairwiseOnDemand]: 110/119 looper letters, 20 selfloop transitions, 4 changer transitions 9/115 dead transitions. [2021-11-13 17:32:40,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 115 transitions, 346 flow [2021-11-13 17:32:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 17:32:40,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-13 17:32:40,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 944 transitions. [2021-11-13 17:32:40,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7932773109243697 [2021-11-13 17:32:40,598 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 944 transitions. [2021-11-13 17:32:40,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 944 transitions. [2021-11-13 17:32:40,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:40,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 944 transitions. [2021-11-13 17:32:40,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 94.4) internal successors, (944), 10 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:40,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:40,606 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:40,606 INFO L186 Difference]: Start difference. First operand has 124 places, 105 transitions, 254 flow. Second operand 10 states and 944 transitions. [2021-11-13 17:32:40,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 115 transitions, 346 flow [2021-11-13 17:32:40,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 115 transitions, 331 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-11-13 17:32:40,611 INFO L242 Difference]: Finished difference. Result has 129 places, 105 transitions, 264 flow [2021-11-13 17:32:40,611 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=129, PETRI_TRANSITIONS=105} [2021-11-13 17:32:40,614 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 5 predicate places. [2021-11-13 17:32:40,614 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 105 transitions, 264 flow [2021-11-13 17:32:40,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 92.65) internal successors, (1853), 20 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:40,615 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:40,616 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:40,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:40,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:40,829 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:32:40,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:40,830 INFO L85 PathProgramCache]: Analyzing trace with hash -156318996, now seen corresponding path program 4 times [2021-11-13 17:32:40,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:40,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728949038] [2021-11-13 17:32:40,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:32:40,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:40,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:40,832 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:40,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:32:41,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:32:41,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-13 17:32:41,035 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:32:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:32:41,305 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 17:32:41,305 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:32:41,306 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-13 17:32:41,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-13 17:32:41,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-11-13 17:32:41,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-11-13 17:32:41,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 6 remaining) [2021-11-13 17:32:41,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-13 17:32:41,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:41,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:41,526 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2021-11-13 17:32:41,531 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 17:32:41,531 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:32:41,665 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:32:41,668 INFO L158 Benchmark]: Toolchain (without parser) took 12956.57ms. Allocated memory was 71.3MB in the beginning and 159.4MB in the end (delta: 88.1MB). Free memory was 51.0MB in the beginning and 74.3MB in the end (delta: -23.3MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. [2021-11-13 17:32:41,668 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 71.3MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:32:41,669 INFO L158 Benchmark]: CACSL2BoogieTranslator took 774.10ms. Allocated memory is still 71.3MB. Free memory was 50.7MB in the beginning and 40.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:32:41,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.53ms. Allocated memory is still 71.3MB. Free memory was 40.6MB in the beginning and 37.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:32:41,670 INFO L158 Benchmark]: Boogie Preprocessor took 70.83ms. Allocated memory is still 71.3MB. Free memory was 37.6MB in the beginning and 35.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:32:41,671 INFO L158 Benchmark]: RCFGBuilder took 1341.06ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 35.0MB in the beginning and 74.2MB in the end (delta: -39.2MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2021-11-13 17:32:41,671 INFO L158 Benchmark]: TraceAbstraction took 10658.21ms. Allocated memory was 100.7MB in the beginning and 159.4MB in the end (delta: 58.7MB). Free memory was 73.6MB in the beginning and 74.3MB in the end (delta: -670.2kB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. [2021-11-13 17:32:41,674 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 71.3MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 774.10ms. Allocated memory is still 71.3MB. Free memory was 50.7MB in the beginning and 40.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.53ms. Allocated memory is still 71.3MB. Free memory was 40.6MB in the beginning and 37.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.83ms. Allocated memory is still 71.3MB. Free memory was 37.6MB in the beginning and 35.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1341.06ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 35.0MB in the beginning and 74.2MB in the end (delta: -39.2MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10658.21ms. Allocated memory was 100.7MB in the beginning and 159.4MB in the end (delta: 58.7MB). Free memory was 73.6MB in the beginning and 74.3MB in the end (delta: -670.2kB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:32:41,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fee676-c95b-48ec-80ce-0edf7abbe93c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null